CTLINDRELLID^. 6Y 



peristome free, reflected. C decollata, Nyst. 30 sp. Haj'ti, 

 Jamaica, etc. 



APOMA, Beck. 1837. (Casta, Albers, 1850.) Shell sinistral, 

 cylindrical, subulate ; whorls numerous, oblique, the last scarcely 

 free, carinated at the base; aperture oblong, ciicular, peristome 

 expanded. G. g7-acilis, Wood (xcix, 48). 3 sp. Jamaica. 



CALLONiA, Crosse and Fischer, 1870. Shell subulate, truncated, 

 many-whorled, whorls ribbed across ; last whorl free, declining, 

 angulated ; aperture subquadrangular ; peristome simple, ex- 

 panded. C. Elliotti, Poey Cxcix, 49). Cuba. 



GONGYLOSTOMA, Albcrs, 1850. Shell cylindrically fusiform or 

 conically turreted, apex attenuated, costulately striate; whorls 

 9-20, the last more or less protracted, narrow, sometimes obso- 

 letel}' angulate; aperture circular; peristome expanded. G. ele- 

 ganp., Fer. 85 sp. Mostly Cnba and Jamaica. 



MYCHOSTOMA, Albers, 1850. (Brachypus, Guild, 1828. Brachy- 

 podella, Beck, 1837. Brachypodisca, Agass., 1847.) Shell svib- 

 cjdindrical or subulate, truncate; whorls 9-17, the last free, 

 declining; aperture subquadrangular ; peristome expanded. G. 

 collaris, Fer. (xcix, 51). 27 sp. West Indies. 



STROPHINA, Morch, 1852. Shell turriculated, cylindrical, sub- 

 ventricose, umbilicated, summit truncate; whorls convex, ob- 

 liquel}^ plicate ; columella angulated at the base ; subarcuated ; 

 aperture subquadrangular. G. Laterradii, Grat. (xcix, 52). 

 Hayti. 



ciRROBASis, Conrad, 1874. G.venusta^ Conr. (xcix, 53). Ter- 

 tiary. Pebas, Upper Amazon. 



TRACHELTA, Pfeiffcr, 1855. (Accra, Ads. [pt.], 1855.) Shell fusi- 

 form, not rimate, apex attenuate, somewhat truncated ; whorls 

 18-24, the last free, protracted ; aperture oblique, circular ; peris- 

 tome expanded. C. porrecta^ Gould (xcix, 50). 33 sp. Cuba, 

 and other W. I. Islands, Central America. 



METASTOMA, Strcbcl and Pfeffer. Not truncated ; last whorls 

 partly free, turned horizontally inwards, concealing the perfora- 

 tion. G. Boemeri, Pfr. Mexico. 



BOSTRicHOCENTRUM, Strcbcl and Pfeffer. Columella tubular, 

 surrounded by a thick, solid, rope-like thickening. G. Tryoni^ 

 Pfr. (xcix, 54). Mexico. 



HOLOSPiRA, Martens, 1860. (Accra, Albers, 1850.) Shell 

 rimate, turreted or fusiform, apex conical, not truncated ; whorls 

 11-14, the last barely or not at all protracted, base carinated; 

 columella plicate ; apertui'e quadrangular ; peristome free, ex- 

 panded. Erected by Crosse and Fischer into a distinct genus 

 in the family Pupidte, the teeth of the radula being in trans- 

 verse rows and tricuspidate, similar to Helix ; the jaw very thin 

 and smooth. C iyei^tjW,Menke ; Texas, Mexico. 13 sp. Mexico, 

 Texas, on Cactus. 



