TROCHUS- 773 



GORALLiNUs. 31. Shell turban-shaped, and the 

 whirls ventricose, with crowded transverse 

 rows of beads ; aperture and pillar toothed, 

 and the umbilicus crenated. 



Variety A. Red, mottled with black or white. 

 Trochus corallinus. Gme/in, p. 3.")76. 

 Troclms, No. 178. Schroeter Einl. i. p. 747. 

 Le Fiiget. Adanson Senegal, p. 183. t. 12. f. 4. 



Variety B. Black, mottled with white, or some of the beads 

 alternately white. 

 Trochus lugubris. Gmelin, p. 3583. Schreihers Conch, i. 



p. 2G5. 

 Trochus, No. 30. Schroeter Einl. i. p. 692. 

 Nodukis lugubris. Chemnitz, \. ^i. 54^. t.\()5. f. \5'!\. 



Inhabits the coasts of the Magdalen Islands. Adanson. 



Shell three or four lines long, and the length rather exceeds the 

 breadth ; it is nearly allied to T. Pharaonius, but differs in 

 being constantly much smaller, and in having the whirls ven- 

 tricose, and the base more convex. Chemnitz says that his 

 Noduhis lugubris is a South Sea shell, but [ have found it 

 in a piece of coarse sponge, with the other Variety. It is a 

 beautiful little species. 



GUiNEENSis. 32. Shell convex, with numerous 

 transverse rows of granules and nodules ; 

 aperture crenulated, and the umbilicus and 

 pillar toothed. 



Trochus Guineensis. Gmelin, p. 3574. Schreihers Conch. 



i. p. 246. 

 Trochus, No. 85. Schroeter Einl. i. p. 712. 

 Globulus asper Guinaicus. Chemnitz, v. p. 1 15. t. 171. f. 

 1680. 



Inhabits the coasts of Guinea. Chemnitz. 



Shell about six lines long, and eight broad, and is of a greyish 

 ash-colour clouded with brown ; in the a[)erture and umbi- 

 licus it somewhat resembles T. Pharaonius. Chemnitz's 

 fig. l681, which is T.nodulus of Gmelin, looks like the 

 same shell coated with a thin greyish epidermis. 



CARNEUS. 33. Shell depressed, somewhat flesh-co- 

 loured, with crowded rows of transverse 

 beads ; umbilicus large and one-toothed. 



VOL. II, o 



