hy Moricaiid, hut subsequently the kindness of Mr. Cuming en- 

 ahled us to give f. 98. which is from a specimen. The species 

 differs from H. auruntia in being slightly angulated at the colu- 

 mella and in not having the inner lip spread over the body whorl. 



Antilles. 



4. H. DEPRESSA, (pi. i. f. 47.) Gray, Zool. Journ. i. p. 70. 

 T. alba, laevi, depressa, tenui; apertura transversim elongata; 



columella triangulari ; labio externo depresso, supra infraque sub- 

 dentato. 



White, smooth, depressed, thin; with a triangular columella; 

 the outer lip thickened and sinuated above and below. 



5. H. AUREOLA, (pi. i. f. 44, 45, 46.) Gray- Zool. Journ. i. 

 p. 70. 



T. globosa, minute spiraliter striata; apertura sub-quadrata, 

 margine lato, supra infraque unidentato. 



Shell globular, finely striated, with the aperture rather square, 

 and the edge broad, with a tooth above and below ; the last whorl 

 contracted near the margin. Jamaica. 



6. H. sTRiATULA. (pi. 1. f. 43.) Sow. Jun. Zool. Proc. 1842. 

 T. sub-depressa, concentrice sub-striata, fulvo-rufescente, aper- 

 tura sub-quadrata, margine albo, crasso, reflexo, integro, sub- 

 sinuato, postice sub-depresso. 



A concentrically striated, sub-depressed shell, placed next to If. 

 aureola on account of the margin being slightly bending and de- 

 pressed, above and below, Martinique. 



7. H. soLiDULA. (pi. ii. f. 52, 53, .54 ) Gray. Beech. App. 



T. crassa, depresso-conica ; anfractibus carinatis ; labio interno 

 calloso, externo crasso, prope columellam sub-coarctato. 



Thick, conical, depressed; whorls wdth a central keel ; inner lip 

 thickened ; outer lip thick, slightly contracted near the columella. 



8. H. MAUGERi^. (pi. ii. f. 55.) Gray. Beech. App. 



T. crassa, depressa ; anfractibus uni carinatis ; labio interno 

 crasso, magno; columella angustata; labio externo crasso, supra 

 infraque sub-emarginato. 



Thick, depressed ; whorls angular and keeled; inner lip thick, 

 columella terminating in a point; outer lip thick, slightly emargi- 

 nated above and below, prominent in the centre. 



Sec. 2, Shell thick, siib-angulated, a notch at the base of the columella. 



9. H. Sagra. (pi. i. f. 10. pi. iii. f. 126.) D'Orb. Moll. Cub. 

 p. 240. T. crassa, conoidea, subcompressa, concentrice sub- 

 striata; apertura sub triangulari, labio externo vix reflexo; prope 

 columellam sub-emarginato ; labio interno expanso, calloso, colu- 

 mella sub-complanata, acuminata ; epidermide fusca .viridescente. 



Shell thick, conical, depressed, with the whorls angulated, 

 the aperture rather triangular, the outer lip scarcely reflected, 

 thickened within, inner lip thickened and spread widely over the 

 under part of the last whorl. Cuba. 



10. H. sub-maroinata. (pi. iii. f. 123 and 137.) Gray, Zool. 



B 2 



