— 435 — 



ScjUaea Bosc 1802. Hist. Vers. l. p. 85. * 

 BoRY St. Vinc. 1803. Voy. * 

 RoissY 1805. Moll. V. p. 155. 

 = Glaucus Forst. 

 Seymiiia Risso 1826. Hist. IV. p. 438. Vid. Sininia. 

 Sedgnickia M'CoY 1844. Carb. Foss. Irel. * 

 Etym. Dicat. Sedgwick. '^) 

 Genus Conchaceorum. (Agass. Nom.) 

 Se§;mentaria Swains. 1840. Malac. p. 337. 

 Etym. Segmentum. 

 Subgenus Planorbis. 

 = Segmentina FJem. 

 SegmentiBia Flem. (1817?) Edinb. Encycl. VII. * et 1828. 

 Jlist. Hrit. An. p. 279. 

 Etym. praec. 

 Gcnus Pubnoniferorum aquaticorum. Typus : Plan- 



orbis nitidus Midl. 

 TuRTON 1831. MMn. p. 116. * 

 Rossm. 1835. Icon. II. p. 15. genus rejicit. 

 Beck 1837. Ind, p. 123. — subgenus Planorbis. 



Pariter Hartm. 1840. Syst Uebers. 

 Gray 1840 in Turt. Man. ed. 2a p. 271. — genus 



Planorhinorum. 

 Id. 1842. Syn. Brit. Mus. p. 91. — genus Li.mnaea- 



darum. 

 Synon. Planorbis (sp.) Miill. etc. 

 Helix (sp.) Walker. 

 Nautilus (sp.) Mon(. Lightf. Mal. et Rack. Dillw. 



Wood. 

 Hemithalamus Leach. Fitz. 

 Segmentaria Swains. 

 Sellaria Link 1807. Beschr. Rost. S. III. p. 158. 

 Etym. Sella. 

 = Placuna Brus:. 



12) Sedgwickia Bowd. (1835.) genus Marchantiacearum. 



