5 



It is difficult to distinguish this from H. dentigera, the surface., 

 however, is rather rougher, and the outer lip is scarcely reflected. 



Matauzas. 



17. H. minima, (pi. iii. f. 119.) D'Orb Moll. Cub. p. 240. 

 T. minuta, H. dentigerae simili, emarginatione minus valida. 



A minute shell, somewhat resembling the H. dentigera in shape, 

 but the last whorl larger in proportion, and the notch less distinct. 



Cuba. 



Sec. 4. Spirally ribbed or striated, outer lip diffuse, columella 

 flattened or concave. 



18. H. pulchella. (pi. i. f. 15, 16.) Gray, Zool. Journ. i. 64. 

 T. conica, sub-angulata, spiraliter costata ; costis distantibus, 



rugosis; labio externo expanso, reflexo; columella lata, complanata. 



Conical, rather angulated, with rugose, distant ribs, in a spiral 

 direction, with the outer lip expanded, reflected and confluent with 

 the columella; columella broad, flattened. 



19. H. Tankervillii. (pi. i. f. 17.) Gray, Zool. Journ. i. 250. 

 T. H. pulchellae simillima; sed majori ; carina interrupta, in 



medio anfractuum ornata. 



Very much like H. pulchella, but larger, with an interrupted 

 keel, in the middle of the whorls. 



20. H. virgin ea. (pi. i. f. 18. and pi. iii. f. 114.) Lea. Obs. 

 T. H. pulchellae simili, sed crassiori, costis magis numerosis ; 



columella concava. 



Differing from H. pulchella in being thicker, having the ribs 

 closer and more numerous, the outer lip less expanded above, and 

 the columella rather hollow. 



21. H. globosa. (pi. i. f. 24 ) Gray Beech. App. 



T. forma H. virgineue simili, anfractibus supra costatis infra 

 lapvibus. 



In this species, the upper part of the whorls only are ribbed, the 

 outer lip is less expanded, and the upper part of the whorl more 

 elevated than in H. virginea. 



22. H. costata. (pi. i. f. 20.) Gray Zool. Journ. i. 66 



T. minuta, H. virginese simili, sed costis paucis; columella 

 angustiori ; labio externo vix expanso. 



A minute shell, resembling H. virginea in shape, but with the 

 ribs larger and fewer in proportion, the outer lip scarcely expanded 

 and the columella narrower. 



Sec. 5. Globose ; outer lip con fluent with the columella j 

 inner lip thin. 



23. H.zonata. (pi. ii. f. 62, 63, 64.) H. fasciata, H. flava, 

 Spix; H. variabilis, Wagner. 



T. conica, sub-rhomboidea, leviter spiraliter costata ; anfractibus 

 angulatis, unicarinatis, ; carina altera, plus minusve distincta infra 

 angulum ; apertura sub-quadrata ; labio externo expanso, superne 

 depresso in medio attenuato, ad columellam sub-angustato. 



