MUREX. 751 



UNCINATUS. 146. Shell turreted, transversely striat- 

 ed, with the four lower whirls armed in the 

 middle with hooked spines, the fifth and sixth 

 ribbed, and the others glabrous. 



Murex uncinatus. Gmelin, p. 3542. 



Murex, No. lyS. Schroeter Einl. i. p. 6ll. 



Strombus Tympanorum. Schroeter Fluss. p. 379. t. 8. f. 15. 



Inhabits • 



Shell about an inch and a quarter long, and half as broad, of a 



pale blackish brown colour ; it is said to have nine whirls, an 



oval aperture, and the outer lip toothed, but it appears to be 



rather a doubtful species. 



ATRATUS. ]47. Shell turreted, with transverse 

 striae, and two tuberculated belts on each 

 whirl ; outer lip striated within, and the beak 

 nearly straight. 



Murex atratus. Born Mus. p. 329. t. 11. f. 17 and 18. 



Gmelin, p, 3564. Schreibers Conch, i. p. 211. 

 Murex, No. 177. Schroeter Einl. i. p. 601. 

 Cerithium atratuni. Briiguiere E?ic. Meih. p. 480. 



Inhabits 



Shell about an inch and a quarter long, and half an inch broad, 

 of a blackish colour ; it has, according to Bruguiere, fifteen 

 whirls, on each of which there is a granulated belt in the 

 middle, and another near the upper extremity ; Born has 

 described the beak to be straight, and the pillar one-plaited ; 

 but Bruguiere says the former is slightly curved, and that the 

 latter is not plaited at all. I have a shell with alternate va- 

 rices, which in other respects answers the description, but 

 is of a reddish brown colour. 



ALUCOIDES. 148. Shell transversely striated with 

 spinous plaits below the middleof the whirls, 

 and crenulated above; beak slightly recurved. 



Murex alucoides. Olivi Adriat. p. 153. 

 Murex Aluco, Var. ^, and c Gmelin, p. 356 J. 

 Murex, No. 196. Schroeter Einl. i. p. 496. 

 Strombus thymelus. Mus. Gevers. p. 292. No. 482. 

 Cerithium vulgatum. Bruguiere Enc. Meth. p. 481. 

 Le Goumier. Aclanson Senegal, p. 156. t. 10. f. 3. 

 Bonanni Rec. and Kirch. 3. f. 82. Lister Conch. 1. 1019. 



