194 EEV. B. T. LOAVE's LIST OF SHELLS 



subcylindric, a little broader upwards ; spire very short, abrupt or 

 truncate, its mammiUa distinct, but not exserted ; sutural groove 

 very broad and shallow, nearly or quite flat, its lip or edge very 

 acute, erect, and thin, not incurved, sharply raised or earinate ; 

 shoulder sharply rectangular, prominent, remote from the spire, 

 the angle sometimes rising into an erect horn-like point ; aperture 

 not reaching to the apex ; inner lip none. Coloiu' uniform plain 

 nankin-yellow or cinereous bluish-grey. From 4-6 inches long, 

 and 2-2|^ broad. 



Valuta porcina, Lam. ed. 2. x. 383 (excl. syn. Adans. et Mart, 

 f. 765) ; Swains. Exot. Conch, opt. (excl. syn. Adans. et Mart, 

 f. 765). Cyniba porcina, Sowerb. Sp. Conch. 6. ff. Qa-k ; Sowerb. 

 Man. f. 434 ; Mart. t. 70. f. 764. Voluta OymUwm, Linn. ! Syst. 

 ed. 12. 1196; Hani. Conch. Linn.! 237 (not Lam.). 



Hah. "African Ocean," Lam., Sowerhy. 



Adanson's PliUin, t. 3. f. 2, usually referred to the present shell, 

 certainly belongs rather to C. ruhiginosum (Swains.), by its 3-plaited 

 pillar, its thickened or distinct pillar-lip, its less remote and pro- 

 minent shoulder, and its deeper, more narrow, concave sutural 

 channel ; instead of the mostly 2-plaited pillar, the more prominent 

 remote shoulder, and broad, flat, shallow sutural space around the 

 apical mammiUary nucleus or cone of C. porcinum (Lam.). In like 

 manner, Buonanni's 3. f. 2, though it omits the thickened inner 

 lip, by the 3-plaited pillar, the distinct, deep, narrow sutural groove 

 with an incurved edge, and the more rounded, retreating, inflexed 

 shoulder, is by no means a bad representation of C. ruhiginosum 

 (Swains.), /3, sujjra, whilst it exhibits scarcely a single peculiar 

 trait of G. porcinum (Lam.). 



I feel by no means confident that this supposed species is not a 

 merely immature or half-grown state of C. prohoscidale (Lam.), 

 with which Lamarck himself indicates its close afiinity, and Dr. 

 Grray, as before remarked, unites it. 



6. Cymbium cisium, MenJce. 



Voluta cymlium. Lam. (not Linn.). 



Plaits 3 V. 4 (4-6, Lam.) ; shell large, thick and strong, broadly 

 ovate or ovate-oblong ; spne short, abrupt or truncate, its mam- 

 milla subprominent, distinct ; sutural groove deeply and broadly 

 concave, its lip or edge very acute, erect or subreflected, sharply 

 raised or earinate ; shoulder winged, with an erect sharp point or 

 angle remote from the spire ; apertiu-e scarcely reaching to the 

 apex, subefFuse or broad ; outer lip curved ; inner lip obsolete or 



