Circulus (gastropod)

Circulus is a genus of very small and minute sea snails with an operculum, marine gastropod mollusks in the family Vitrinellidae.

Species

According to the World Register of Marine Species, the following species with valid names are included within the genus CirculusCirculus abruptus Rubio & Rolán, 2022 Circulus acuteliratus Circulus adrianrubioi Rubio & Rolán, 2022 Circulus aemilii Rubio & Gofas, 2024Circulus aequatorialis Circulus alcocerae Rubio & Rolán, 2022 Circulus andreae Rubio & Rolán, 2022Circulus andreiasalvadorae Rubio & Rolán, 2022 Circulus angulatus Circulus antoniae Rubio & Rolán, 2022Circulus asperRubio & Rolán, 2022Circulus austerus Rubio & Rolán, 2022Circulus australesensisRubio & Rolán, 2022Circulus aximicrostriatus Rubio & Rolán, 2022Circulus basislevis Rubio & Rolán, 2022

† Circulus bicarinatus Circulus binodular Rubio & Rolán, 2022Circulus biporcatus
† Circulus bonneti Circulus boucheti Rubio & Rolán, 2022Circulus cachoi Rubio & Rolán, 2022Circulus caledonicus Rubio & Rolán, 2022Circulus carinamagna Rubio & Rolán, 2022Circulus carmensalasae Rubio & Rolán, 2022Circulus catenatus Rubio & Rolán, 2022Circulus chefyae Rubio & Rolán, 2022Circulus choshiensis Circulus cinguliferus Circulus colluvius Rubio & Rolán, 2022Circulus communis Rubio & Rolán, 2022Circulus congoensis Circulus convexstriatus Rubio & Rolán, 2022Circulus convexus Rubio & Rolán, 2022Circulus coronatus Rubio & Rolán, 2022Circulus cosmius Bartsch, 1907Circulus cuatricarinatus Rubio & Rolán, 2022Circulus cultrorum Rubio & Rolán, 2022Circulus cumtectum Rubio & Rolán, 2022Circulus cycloma Circulus davidruedai Rubio & Rolán, 2022Circulus decemcords Rubio & Rolán, 2022Circulus delectabilis Circulus delicatus Rubio & Rolán, 2022Circulus depressus Rubio & Rolán, 2022Circulus deprinsi Rolán & Swinnen, 2013Circulus diaphanus Circulus discordant Rubio & Rolán, 2022Circulus discretus Rubio & Rolán, 2022Circulus dispersus Rubio & Rolán, 2022
† Circulus duplicarinus Circulus duplicatus
† Circulus edomitus Circulus ellenstrongae Rubio & Rolán, 2022
† Circulus enaulus Lozouet, 1998
† Circulus estotensis Lozouet, 1998 Circulus euchilopteron Circulus excellent Rubio & Rolán, 2022Circulus exempli Rubio & Rolán, 2022Circulus extensus Rubio & Rolán, 2022Circulus fijiensis Rubio & Rolán, 2022Circulus fininspicor Rubio & Rolán, 2022Circulus fundatus Rubio & Rolán, 2022Circulus gofasi Rubio & Rolán, 2022Circulus gracilis Rubio & Rolán, 2022
† Circulus grignonensis Circulus gyalum Circulus harriettae Circulus harrietwoodae Rubio & Rolán, 2022Circulus hasegawai Rubio & Rolán, 2022
† Circulus helicoides Circulus horroi Rubio & Rolán, 2022Circulus inchoatus Rubio & Rolán, 2022Circulus inesae Rubio & Rolán, 2022
† Circulus inornatus P. Marshall, 1919
† Circulus intermedius Circulus irregularis Rubio & Rolán, 2022Circulus iustus Rubio & Rolán, 2022Circulus juanmai Rubio & Rolán, 2022Circulus juantrigoi Rubio & Rolán, 2022Circulus julioalvarezi Rubio & Rolán, 2022Circulus laevis Circulus lenticularis Rubio & Rolán, 2022Circulus letourneuxi Rubio & Rolán, 2022Circulus liratus Circulus liricinctus Circulus loyaltiensis Rubio & Rolán, 2022Circulus luciae Rubio & Rolán, 2022
† Circulus lucidus Circulus luquei Rubio & Rolán, 2022Circulus madagascarensis Rubio & Rolán, 2022Circulus maestrati Rubio & Rolán, 2022Circulus marchei Circulus marcosi Rubio & Rolán, 2022Circulus maricarmenae Rubio & Rolán, 2022Circulus marquesasensis Rubio & Rolán, 2022Circulus mayottensis Rubio & Rolán, 2022
† Circulus megalomphalus
† Circulus michaudi Circulus microbliquus Rubio & Rolán, 2022Circulus microlines Rubio & Rolán, 2022Circulus micronodular Rubio & Rolán, 2022Circulus microradiatus Rubio & Rolán, 2022Circulus microsculpturatus Oliver & Rolán, 2011Circulus microspiralis Rubio & Rolán, 2022Circulus microstriatus Rubio & Rolán, 2022Circulus microtuberculatus Rubio & Rolán, 2022Circulus minituber Rubio & Rolán, 2022Circulus minutispiralis Rubio & Rolán, 2022
† Circulus mitis Circulus modestus Circulus monocoronatus Rubio & Rolán, 2022Circulus monteiroi Rubio & Rolán, 2022Circulus mortoni Ponder, 1994Circulus mozambiquensis Rubio & Rolán, 2022Circulus multicordatus Rubio & Rolán, 2022Circulus multiradiatus Rubio & Rolán, 2022Circulus multistriatus Rubio & Rolán, 2022Circulus murilloi Rubio & Rolán, 2022Circulus nimis Rubio & Rolán, 2022
† Circulus nitidus Circulus novemcarinatus Circulus novemlicium Rubio & Rolán, 2022Circulus obesus Rubio & Rolán, 2022Circulus octoliratus Circulus oliveri Rubio & Rolán, 2022Circulus operius Rubio & Rolán, 2022Circulus orbignyi Circulus ordinatus Rubio & Rolán, 2022Circulus osfloridum Rubio & Rolán, 2022Circulus osingens Rubio & Rolán, 2022Circulus osmagnum Rubio & Rolán, 2022Circulus pacomartinezi Rubio & Rolán, 2023Circulus pamilacanensis Rubio & Rolán, 2022Circulus papuaensis Rubio & Rolán, 2022Circulus parallelus Rubio & Rolán, 2022Circulus parcus Rubio & Rolán, 2022Circulus paucicordatus Rubio & Rolán, 2022
† Circulus paulensis Lozouet, 1998 Circulus pellucidus Circulus penasi Rubio & Rolán, 2022Circulus pilartarazonae Rubio & Rolán, 2022Circulus pinsensis Rubio & Rolán, 2022Circulus planatus Rubio & Rolán, 2022
† Circulus planorbillus Circulus planorbis
† Circulus planorbularis Circulus pluripunctus Rubio & Rolán, 2022Circulus plurispiralis Rubio & Rolán, 2022
† Circulus politus Suter, 1917
† Circulus politus Circulus protobrevis Rubio & Rolán, 2022Circulus prototuber Rubio & Rolán, 2022Circulus proximus Rubio & Rolán, 2022Circulus pseudocarinatus Rubio & Rolán, 2022Circulus pseudopraecedens Adam & Knudsen, 1969Circulus pudicus Rubio & Rolán, 2022Circulus punctuslinealis Rubio & Rolán, 2022Circulus quinoneroi Rubio & Rolán, 2022Circulus quinquecarinatus
† Circulus rangii Circulus retroconvexus Rubio & Rolán, 2022Circulus reunionensis Rubio & Rolán, 2022Circulus robustus Rubio & Rolán, 2022Circulus rolanorum Rubio & Rolán, 2022Circulus rosapereirae Rubio & Rolán, 2022Circulus rosenbergi Rubio & Rolán, 2022Circulus rossellinus Dall, 1919Circulus rudis Rubio & Rolán, 2022Circulus rugospiralis Rubio & Rolán, 2022Circulus rusticulus Rubio & Rolán, 2022Circulus rusticus Rubio & Rolán, 2022Circulus ryalli Oliver & Rolán, 2011Circulus sandrogorii Rubio & Rolán, 2022Circulus scaber Rubio & Rolán, 2022Circulus sculptilis Circulus sculpturatus Rubio & Rolán, 2022Circulus semisculptus
† Circulus semistriatus Circulus senegalensis Adam & Knudsen, 1969Circulus serratus Rubio & Rolán, 2022Circulus sexangulae Rubio & Rolán, 2022
† Circulus sigaretornuformis Lozouet, 1998
† Circulus similis Circulus similiter Rubio & Rolán, 2022Circulus simongrovei Rubio & Rolán, 2022
† Circulus simplex Circulus simpliciter Rubio & Rolán, 2022Circulus sixcarinatus Rubio & Rolán, 2022Circulus smithi Bush, 1897Circulus societyensis Rubio & Rolán, 2022Circulus solomonensis Rubio & Rolán, 2022Circulus soyoae Circulus speciosus Rubio & Rolán, 2022Circulus spiralis Rubio & Rolán, 2022
† Circulus spirorbis Circulus stephani Rolán & Ryall, 2002Circulus striatus Circulus structus Rubio & Rolán, 2022Circulus suavis Rubio & Rolán, 2022
† Circulus subcirculus
† Circulus subedomitus Circulus subradiatus Rubio & Rolán, 2022Circulus subsuturalis Rubio & Rolán, 2022Circulus subtatei Circulus sulcatus Circulus supranitidus Circulus susomendezi Rubio & Rolán, 2022Circulus suspensus Rubio & Rolán, 2022Circulus suturcaten Rubio & Rolán, 2022Circulus taiwanensis Rubio & Rolán, 2022Circulus tatei Circulus templadoi Rubio & Rolán, 2022
† Circulus tenuiliratus Circulus tenuiradiatus Rubio & Rolán, 2022
† Circulus tenuistriatus Circulus teramachii Circulus texanus Circulus tongaensis Rubio & Rolán, 2022Circulus transculptus Circulus troncosoi Rubio & Rolán, 2022Circulus tuberopertus Rubio & Rolán, 2022Circulus umbilicordatus Rubio & Rolán, 2022
† Circulus unicarinus Circulus urgorrii Rubio & Rolán, 2022Circulus valdesculpturatus Rubio & Rolán, 2022Circulus vanuatuensis Rubio & Rolán, 2022Circulus venustus Circulus victormonzoi Rubio & Rolán, 2022Circulus villacampae Rubio & Rolán, 2022Circulus virginiae Circulus virginieherosae Rubio & Rolán, 2022Circulus xuae L.-W. Lin & Rolán, 2024

The Indo-Pacific Molluscan Database also mentions the following species with names in current use :Circulus callusa Circulus pachyston
;Species brought into synonymy:Circulus bailyi Hertlein & A. M. Strong, 1951: synonym of Cyclostremiscus bailyi Circulus biporcata : synonym of Circulus biporcatus Circulus carinulatus Locard, 1889: synonym of Circulus striatus Circulus cerrosensis Bartsch, 1907 accepted as Cyclostremiscus cerrosensis Circulus cingulatus Bartrum, 1919 † accepted as Pterolabrella cingulata †Circulus costulatus Locard, 1889: synonym of Circulus striatus Circulus cubanus Pilsbry & Aguayo, 1933: synonym of Cyclostremiscus cubanus Circulus dalli Bush, 1897: synonym of Cyclostremiscus dalli Circulus delectabile accepted as Circulus delectabilis Circulus diomedeae Bartsch, 1911 accepted as Cyclostremiscus diomedeae Circulus formosissimus Brugnone, 1873: synonym of Skeneoides jeffreysii Circulus hendersoni : synonym of Cyclostremiscus hendersoni Circulus jeffreysii Monterosato, 1872: synonym of Skeneoides jeffreysii Circulus madreensis F. Baker, Hanna & A. M. Strong, 1938 accepted as Cyclostremiscus madreensis Circulus margaritiformis : synonym of Cirsonella margaritiformis Circulus modesta : synonym of Circulus modestus Circulus nicholsoni A. M. Strong & Hertlein, 1939 accepted as Episcynia nicholsoni Circulus perlatus Pelseneer, 1903 accepted as Orbitestella perlata Circulus philippinensis Rubio & Rolán, 2022: synonym of Circulus pacomartinezi Rubio & Rolán, 2023 Circulus sarsi accepted as Orbitestella sarsi Circulus stirophorus M. Smith, 1937: synonym of Cyclostremiscus beauii

* Circulus taigai Hertlein & A. M. Strong, 1951 accepted as Cyclostremiscus taigai Circulus tornata : synonym of Circulus tornatus Circulus tornatus : synonym of Tuberes tornatus Circulus translucens : synonym of Xyloskenea translucens Circulus tricarinatus : synonym of accepted as ''Circulus striatus''