203 



BUCCINUM C. Da Cos. p. 128. t. 8. /. 4. Subfusi- 

 form-turreted, variable in color, being chocolate 01* 

 partly mixed with white, yellowish white with fine spiral 

 brown streaks or pale dead uniform white ; whorls six, 

 tapering, with nine elevated longitudinal ribs, otherwise 

 smooth, often glossy ; aperture narrow, canal scarcely 

 contracted and nearly straight ; outer lip usually thick- 

 ened with an external rib, its edge acute ; inner lip 

 but slightly replicated. 0,30... $. S. Wales, Devon, 

 Cornwall. 



F. ATTENUATES. F. p. 350. MUREX A. Mont. p. 

 266. t. 9./. 6. Lin. T. 8. p. 143. D. p. 742. 

 Most slenderly fusiform, uniform yellowish white, the 

 suture very fine ; whorls scarcely raised, eight, tapering 

 to a fine point, destitute of striae, with nine equidistant 

 strong longitudinal ribs which are arched or undulated 

 as they rise in the middle of each volution ; aperture 

 narrow, contracting a little at the canal, which is mode 

 rately long and nearly straight ; outer lip thickened at 

 the back by a rib ; inner lip plain, i... 0,014. Devon' 

 shire, very rare, 



F. NEBULA. F.p. 350. MUREX N. Mont. p. 267. 

 t. 15. /. 6. Lin. T. 8. p. 143. Dor. Cat. p. 46. t. 

 14. /. 16. D. p. 743. PLEUROTOMA N. Blainv. 



