TROCHUS. 803 



Lister Couch, t. 628. f. 14. Gualter, t. 60. f. Q. 



Inhabits the coasts of Jamaica and Barbadoes. Lister. St. 

 Domingo and Martinique. Favanne. 



Shell about an inch and three quarters long, and an inch and a 

 half broad, with thick somewhat curved oblique plaits, which 

 become thicker at the margin of the whirls, and at the base 

 form obtuse short spines or vaulted tubercles ; the colour is 

 whitish, yellowish, or reddish brown, and generally marked 

 with a paler band at the upper margin of the whirls. 



c^LATUS. 103. Shell sub-conical, with oblique 

 somewhat scaly plaits on the upper pait, and 

 transverse spinous ribs at the base of the 

 whirls. 



Trochus caelatus. Chemnitz, v. p. 33. t. 162. f. 1536 and 

 1537. Gmelin, p. 3581. Schreibers Conch, i. p. 9,63. 

 Trochus, No. 18. Schroeter Linl. i. p. 685. 

 La Raboteuse. Favanne, ii. p. 89. t. 8. f, M. 

 Bonanni Rec. and Kirch, in. f. 167- Lister Conch, t. 647- 

 f 40. Seba, iii. t. 60. f. 1 and 2. Knorr, v. t. 12. f. 3. 

 Geve. t. 15. f. 133 and 134. Regenfuss, ii. t. 1. f. 9. 

 Inhabits the coasts of Jamaica. Lister. Isle of France, Ma- 

 dagascar, and St. Domingo. Favanne. St. Croix. Chem- 

 nitz. 

 The length, which rather exceeds the breadth, varies from one 

 to three inches, and the colour is white, most commonly 

 tinged with sea-green, and sometimes reddish ; the upper 

 part of the whirls is covered with narrow rather crowded 

 oblique plaits, which become more or less broken below in- 

 to granules or small vaulted scales, and near the margin there 

 f are two or three transverse rows of strong obliquely vaulted 

 spines ; the base is covered with concentric rows of small 

 imbricated scales, and the pillar and inside are pearly : Ti'o- 

 chus virgineus, which Gmelin has arranged as a variety of 

 this species, is a totally different shell. 



GiBBEROsus. 104. Shell conical, with oblique 

 plaits on the upper part, a transverse row of 

 tubercles below, and the margin of the whirls 

 spinous. 



Trochus gibberosus. Chemnitz, x. p. 287. Vign. 23, f. J 

 andJ5. 



