35 



interno expanse; externo postice angulato, medio crasso, sub- 

 reflexo. 



A large white, short, thick species, with a veiy large tubercle on 

 the dorsal part of the angle of the last whorl, and one rather 

 smaller between it and the margin. 



46. S. iNERMis. (pi. x, f. 113.) Sw. Bligh Catalogue. 



T. S. accipitrino simili, sed longiore ; spira magis attenuata ; 

 tuberculis principalibus minoribus; anfractu ultimo medio crenu- 

 lato. 



Like S. accipitrinus, but longer, with the spire more attenuated; 

 the principal tubei'cles smaller ; the last whorl is crenulated in the 

 middh;. 



47. S. GiGAs. (pi. X. f. 117.) Linn. Syst. Nat. p. 1210. 



T. sub-quadrata, angulata, rugosa. spiraliter costata ; spira 

 mcdiocri ; anfractibus angulatis, tuberculis magnis, elongatis, 

 armatis ; apertura lata; labio externo dilatato, tenui, postic6 in 

 alam sub-quad ratam elevato. 



This well-known shell, the largest but one of the genus, is of a 

 buff colour, with a greenish brown epidermis, the aperture beauti- 

 fully tinted with rose colour. Antilles. 



48. S. Goliath, (pi. x. f. 118.) Chemn. xi. p. 147- 



T. ovali, rugosa, spiraliter, distanter, sulcata sulcis duplicatis ; 

 anfractibus ad angulum obtuse nodulosis ; labio externo late ex- 

 panse, complanato, postice in alam rotundatam elevato ; sinu 

 antico parvo. 



Oval, rugose, with distant, double, spiral grooves ; the whorls 

 obtusely angulated with large blunt tubercles; the outer lip, espe- 

 cially at the upper part, is widely expanded and flattened ; the an- 

 terior sinus is shallow. The colour is white, shaded with light 

 pink, and yellow in the aperture. 



49. S. AURis-DUN.E. (pi. ix. f. 101, 102.) Linn. Svst. Nat. 

 p. 1209. 



T. ovali, Isevi ; spira glabrata; anfractibus angulatis; ad angu- 

 lum plicato-tuberculatis, ultimo lato ; apertura angusta, canali 

 elongate, recurve ; labio interno tenui expanse, margine spiram 

 tegente; labio externo crasso, sub-inflexo, postice in digitam elon- 

 gate ; sinu antico magne. 



The back of this shell is white, marbled with purplish brown ; 

 the inner lip is continued in a glassy enamel covering the spire 

 and the front of the shell, the inside of the aperture is richly tinted 

 with deep vermilion. 



50. S. Lamarcku. (pi. ix. f. 98, 99. varieties, 88, 93.) Gray. 



T. S. Auris-Dianse simili, sed rugosa, crassiore ; labio interno 

 minus expanso; apertura interne crenulata. 



This species nearly resembles Auris-Dianae, but is rugose, 

 having two rows of tubercles besides those en the angle, and the 

 inside of the aperture is crenulated at both extremities. Some 



