TEE ANNULARIIDAE—HElvDERSON AND BART8CH. 53 



in 1846 for that it was preoccupied m fossil plants. It was restored 

 by Dall, Proc. Malac. Soc. London, vol. 1, p. 209 (1905), who se- 

 lected Turbo lincina Linnaeus as its t^^'pe. 



1847. Choanojjoma Pfciffer, Zeitschi-. Malak., vol. 4, p. 47. The 

 four species cited by Pfeiffer mthout designating a type are all 

 Annularia s. s. The genus therefore is an absolute synonym of 

 Annularia. 



1847. Cistula Gra}', Proc. Zool. Soc. London, p. 181. This name 

 was taken from the Museum Calonianum (Humphreys). Gra3^'s 

 genus, however, falls by reason of priority of Say's genus Cistula, 

 1825 (Reptilia). 



1850. Tudora Gray, Brit. Mus. Cat. Cycloph., p. 48. Type, 

 Tvdora similis Gray, wliich is a synonym of Cyclostoma megacheilos 

 Potiez and Michaud, which therefore becomes the type. 



1850. Jamaicia C. B. Adams, Contr. Conch., p. 88. Type, Cychs- 

 iorna anomalum C. B. Adams. 



1850. Licina Gray, Brit. Mu?. Cat. Cyrjopli., ]>. 60. Type, Nerlta 

 laheo IMuller. Gray took this name from Brown's work on Jamaica, 

 1750. The type must be selected from one of the two species cited by 

 Gray of neither of which the operculum is known. We are there- 

 fore unable to assign the genus to any fixed position in our scheme 

 of classification. 



1851. Adamsldla I'feill'er, Zeitsclii-. Malak., p. 155. Type, Turho 

 mirabilis Wood, selected by Dall, 1905. 



1856. Ctenopoma (Shuttleworth > Pfeiffer, Malak. Blat., vol. 3, p. 

 58. Type, Cyclostoma rugulosum Pfeiffer. As shown by Sykes 1901 

 (Journ. Malac, vol. 8, p. 59) Pfeiffer's name is preoccupied by 

 Ctenopoma Peters, 1844, for a genus of fishes. He renamed it 

 BTiyiidopoma. 



1859. Diplopoma Pfeiffer, Malac. Blat., vol. 6, p. 73. Type, 

 Diplopoma ai'chitectonicum Gundiach. 



1888. Colohostylus Crosse and Fischer, Journ. Conchyl., vol. 36, p. 

 229. Type, Cyclostoma jayanum C. B. Adams, selected by Dall, 1905. 



1890. Blaesospira Crosse, Journ. Conchyl., vol. 38, p. 280. Type, 

 Cyclostoma echinus Wright. 



1890. Xenopoma Crosse, Journ. Conchyl., vol. 38, p. 282. Tj^pe, 

 CJioanojyonta hystiix Wiight. 



1901. Bliytidopoma Sykes, Journ. Malac, vol. 8, p. 60. Sykes 

 proposed this name to replace Cfoi-opoma Pfeiffer, 1856 (not Cteno- 

 poma Peters, 1844). 



1905. Pamcliondrla Dall, Proc. Malac. Soc. London, vol. 6, p. 209. 

 Type, Turbo fascia Wood. 



1905. pistil osipJwn Dall, Proc. ^ialac. Soc London, vol. 6, p. 209. 

 Type, Cyclostoma bahamense Shuttleworth. 



1913. Bamsdenia Preston, Proc. Malac. Soc London, vol. 10, p. 

 323. Type, Eamsdenia mirifica Preston. 



