802 TK OCHUS. 



half broad, with transven ie rows of concatenated red and 

 white granules ; the bodj -whirl is much broader than the 

 other whirls, and the sum mit of the spire is produced to a 

 fine point; the throat is silvery and grooved. 



PURPURASCENS. 100. Shell conical, with plaited 

 somewhat tubercul ated whirls, and transverse 

 rows of minute gn mules; aperture roundish. 



Trochus purpurascens. Cihenmitz, v. p. 35. t. l62. f. 1538 



and 1539. 

 Trochus purpureas. Gmet in, p. 3582. Schreibers Conch. 



i. p. 264. 

 Trochus, No. 19. Schroater Einl. i. p. 685. 



Inhabits 



This shell, as figured by Ch( ;mnitz, appears to be about thir- 

 teen lines long and twelve broad, of rather a bright purplish 

 colour, and spotted with white round the margin of the 

 whirls. 



AMERICANUS. 101. Shell conical, with longitudi- 

 nal grooves and transverse striae ; inner lip 

 toothed. 



Trochus Americanus. Gmelin, p. 3581. 



Trochus pUcato-nodosuis. Chemnitz f v. p. 33. t. l62. f. 

 1534 and 1535. 



Trochus, No. 17. Schroeter Einl. i. p. 684. 

 Inhabits the coasts of the West India Islands. Chemnitz. 

 Shell about sixteen lines long, and fourteen lines broad, and 



is described by Chemnitz to be yellowish white, but his 



figures are painted yello\ v with a tinge of brown. 



IMBRICATUS. 102. Shell conical, with strong oblique 

 plaits forming v?.ulted tubercles on the base 

 of the whirls, and the inner lip undulated. 



Trochus imbricatus. Gmelin, p. 3581. 



Trochus profunde sulcatus, 8lc. Chemnitz, v. p. 30. t. 160. 



f. 1531. 

 Trochus ramosus. Meiischen Mm. Gevers. p. 284. No. 



418. 

 Trochus, No. 15. Schroeter Einl. i. p. 683. 

 Turbo Tectu.m Persicum. Born Mus. p. 344. t. 12. f. 19 



and 20. 

 Le Conco'xnbre. Favanne/ii. p. 396. t. 13. f. D. 



