39. H. zephyrina. (pi. i. f. 25, 27.pl. iii. f. 118.) Duclos 

 Guerin Mag. Zool. 



T. globosa sub conica, laevi, tenui ; labio externo reflexo ; colu- 

 mella oblique attenuata. 



Globose, rather conical, smooth, thin ; outer lip reflected, colu- 

 mella obliquely attenuated. Figure 1 18 is a more conical variety. 



Cuba. 



40. H. pellucida. (pi. iii. f. 138.) 



T. H. Zephyrinse simili, sed columella poene recta, sub angu lata. 

 A more transparent shell than the preceding, with the co\umella 

 nearly straight, and joining the outer lip at an angle. 



French Guiana. 



41. H. flavida. (pi. iii. f. 117, 134.) Menke, Syn. Moll. Pyri- 

 montis 1830. p. 132. 



T. trochiformi, sub-crasso; labio externo crasso, reflexo, ro- 

 tundato. 



A smaller shell than H. Zephyrina, with the outer lip thickened 

 reflected, and rounded. 



Sec. 6. Columella like the last, shell pyramidal. 



42. H. trochulina. (pi. iii. f. 105.) D'Orb. Moll. Cub. p. 249. 

 T. trochiformi, sub-angulata; labio externo paululum incrassato, 



vix reflexo. 



Trochiform and slightly angulated ; outer lip very slightly 

 thickened, scarcely reflected. Cuba, 



43. H. pyramidalis (pi. iii. f. 104.) H. conica. D'Orb. Moll. 

 Cub. p. 249. 



T. forma H. Trochulinae simili, sed majori ; labio externo incras- 

 sato, in medio sub-expanso. 



Larger than H. Trochulina, with the outer lip thickened, and 

 expanded in the centre. The name given by D'Orbigny was pre- 

 viously occupied. Cuba. 



44. H. elongata. (pi. iii f. 110.) D'Orb. Moll. Cub. p. 291. 

 T. conica, elongata, angulata, laevi ; apertura semi-lunari ; labio 



externo late expanso, in medio producto, ad basin columellae an- 

 gustato ; operculo corneo. 



Another conical species, longer than the last. The outer lip is 

 expanded and broad, particularly in the centre, where it is bent 

 forwards; near the columella it is extremely thin. The shelly 

 operculum fits on the margin of the aperture. Cuba. 



45. H. conica. (pi. iii. f. 101.) Pfeiffer. Wiegmann Archiv fur 

 Naturgesch. Band i. 1839. H. elegans, D'Orb. Moll. Cub. p. 290. 



" T. conica, acuminata, subtus convexiuscula, pallide rufa ; anfr. 

 6 planiusculis, spiraliter confertim striatis ; ultimo spiram sub- 

 aequante, ad basin sub-angulato ; callo columellari angusto; labio 

 albo, expanso, acuto; apertura integra, sub-triangulari." Oper- 

 culo testaceo, pallido. 



Conical, very finely striated in both directions ; whorls nearly 



