DENTALIUM. 1067 



Dentalium eburneum. lAnnaus Syst. Nat. p. 1264. Gme- 

 lin, p. 3737. 



Inhabits India, hinnatts. 



Linnaeus has not given any reference, and I cannot find that 

 any subsequent naturalist has ascertained this species ; it is 

 described to be as white as ivory, extremely smooth and 

 glossy, and to be very like D, Entalis, but to differ in hav- 

 ing numerous convex annular striae at equal distances apart. 



FASCIATUM. 10. Shell slightly curved, very finely 

 striated longitudinally, and pale grey with 

 darker transverse bands. 



Dentalium fasciatum. Gmelin, p. 3737. 



Dentalium, No. I. Schroeter Einl. ii. p. 526. 



Le petit Dentale a stries longitudinales. Favanne, i. p. 



635. t. 5. f. E 2. 

 Martini, i. p. 29. t. 1 . f. 3 B. 



Inhabits the coasts of Sicily. Martini. 



Shell about an inch or an inch and a quarter long, and two 

 lines in diameter at the broader end ; the longitudinal striae 

 sometimes terminate about the middle, leaving the upper 

 half smooth, and Favanne says they rarely extend through the 

 whole length of the shell ; the colour is whitish or pale grey, 

 tinged with orange towards the summit, and marked trans- 

 versely with dusky bands. 



GADUS. 11. Shell slightly curved, very smooth, 

 with a pointed summit, and the base con- 

 tracted. 



Dentalium Gadus. Montagu Test. p. 496. t. 14. f. 7. Ma- 

 ton and Racket, in Lin. Trans, viii. p. 238. 



Inhabits many parts of the British Channel. Montagu. 



Shell about three-eighths of an inch long, and in the broadest 

 part, which is towards the middle, about one-sixteenth of an 

 incii in diameter ; il tapers to a small point at the summit, 

 and is also slightly contracted towards the larger end ; it is 

 white, glossy, and perfectly smooth, and Mr. Montagu says 

 it is known to mariners by the name of Hakes Tooth. 



IMPERFORATUM. 12. Shell sHglitly curved, cylin- 

 drical, minute, transversely striated, and the 

 summit truncated and imperforate. 

 Dentalium imperforatum. Walker's Minute Shells, f. 15. 



