12 



57. H. ROTELLA. (pi. iii. f. 135, 136.) 



T. laevi, angulata, vix carinata; labio externo roflexo ; lal)io 

 interno expanse ; columella sub-angulata. 



Shaped like the last, but small, smooth, with the outer lip very 

 little spread, and the inner lip expanded. We have figured a yel- 

 low and a brown variety. 



58. H. piLosA. (pi. iii. f. 121, 122.) nob. Zool, Proc. 1842. 



T. parva, cornea, angulata, supra angulum distanter spiraliter 

 striata, labio externo vix reflexo ; epidermide ad angulum in cari- 

 nam pilosam producta. 



A small, brown, horny, angulated shell, smooth below the angle, 

 with three or four spiral grooves above ; the epidermis is produced 

 into a broad keel or fringe at the angle of the whorls. Opara. 



Sec. 8. Shell depressed^ columella angulated. 



59. H. Rhodostoma. (pi. ii. f. 71.) Gray. Z. J. i. 68. 



T. angulata laevi, carinata; labio externo valide reflexo, com- 

 planato, lato ; columella supra callosa, ad basin producta, acu- 

 minata. 



Angulated, smooth, carinated ; outer lip reflected, flattened and 

 broad ; columella callous above, produced into a point at the base. 



60. H. angulata. (pi. ii. f. 61. and pi. iii. f. 100,) nob. Zool. 

 Proc. 1842. 



T. conica, spiraliter stiiata; anfractibus supra et infra sub- 

 inflatis, in medio carinatis, labio externo reflexo, rotundato, supra 

 angulum sub-depresso ; coUumella sub-recta, ad basin angulata ; 

 operculo corneo. 



Conical, spirally grooved ; with the whorls rather inflated above 

 and below the angle, keeled in the centre ; outer lip rather rounded, 

 its outline more inflated below than above the angle ; columella 

 sharply angulated ; operculum horny. The general colour of this 

 shell is whitish yellow, the operculum is red, and there is a red 

 line within the outer lip. Brazil. 



61. H. fulva. (pi. i. f. 23.) D'Orb. Moll. Am. Mer. p. 398. 



T. sub-angulata, spiraliter striata; columella triangulari, ad basin 

 angulata ; labio externo reflexo ; operculo calcareo. 



Rather angulated, spirally grooved ; columella triangular, pointed 

 at the base ; outer lip reflected ; operculum calcareous. Bolivia. 



62. H. Brasiliensis. (pi. i. f. 29.) Ferussac. 



T, H. fulvae simillima, sed apertura sub-quadratu; columella 

 recta, angustata. 



Very much like the last, but with the aperture rather square ; 

 columella straight and narrow, with a triangular space behind it. 

 Rio de Janeiro, Brazil. 



63. H. SYLVATicA. (pi. i. f. 30.) D'Orb. Moll. Am. Mei. 

 p. 399. 



T. H. fulvae simili, sed leviori, spirS. magis elevata. 



This shell is smooth excepting immediately under the centre 



