758 MUREX. 



Murex hexagonus. Chemnitz, x. p. 26l. 1. 162. f. 1554 



and 1555. Gme/iW, p. 3.548. 

 Cerithium hexagonum. Bruguiere Enc. Meth. p. 494. 



Inhabits the South Sea, and is frequently found fossil in Eu- 

 rope. Chemnitz. 



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

 of an inch broad, of a yellowish colour, with the lips and 

 inside white ; besides the transverse ribs, it has six strong 

 longitudinal ones, which give it an hexagonal appearance ; 

 the aperture is nearly round, and the outer lip thickened, 

 expanded, and angulated at the margin. 



RETICULATUS. 160. Shell turreted, with longitudi- 

 nal ribs, and four transverse grooves on each 

 whirl, forming uniform tubercles all over. 



Murex reticulatus. Montagu Test. p. 272. Maton and 

 Racket, in Lin. Trans, viii. p. 150. Dorset Cat. p. 47. 

 t. 14. f. 13. 

 Strombiformis reticulatus. Da Costa Brit. Conch, p. 117. 



t. 8. f. 13. 

 Gualter, t. 58. f. G. 

 Inhabits the coasts of Great Britain. Borlase, Sfc. 

 Shell half or sometimes three quarters of an inch long, and 

 about one-fifth as broad, of a brownish or pale chestnut- 

 colour ; it has eleven or twelve whirls, and each whirl is in- 

 tersected by four transverse grooves, so as to form an equally 

 tuberculated surface ; the aperture has only a very small 

 rather obsolete beak at the base. 



TUBEReuLARis. 161. Shell turreted, with longitu- 

 dinal ribs, and three transverse grooves on 

 each whirl, forming uniform tubercles all 

 over. 



Murex tubercularis. Montagu Test. p. 270, and Supp. 

 p. 116. Maton and Racket, in Lin. Trans, viii. p. 150. 



Inhabits the coasts of England. Montagu. 



Shell a quarter of an inch long, and not more than one-fourth 

 as broad, and has three rows of equal tubercles on each 

 whirl; the aperture is oval, and ends in a small beak, 

 which is nearly enclosed by the pillar-lip turning inwards ; 

 the colour is chestnut-brown. 



ADVERSUS. 162. Shell turreted, with the whirls re- 

 versed, and on each three transverse rows of 

 tubercles, of which the middle one is smallest. 



