211 



dilated and winged by age and having a sinus con- 

 tiguous to the canal. 



R. PES. PELECANI. Lam. 5. F. p. 359. Macgy. 

 Aber. p. 173. STROMBUS P. Lin. 1207. D. p. 656. 

 Mart.f. 848,9,0 List. t. 865. /. 20 Knorr.3 . 

 t. 7./. 4. Pew. 4. p. 122. t. 75. /. 94. Don. t. 4. 

 Mont. p. 253. Dor. Cat. p. 46. t. 15. /. 7. APORR- 

 HAIS QUADRIFERUS. Da. Cost, p. 136. /. 7. /. 7. 

 Turreted, reddish grey, with ten ribbed or rather tuber- 

 culated whorls, on the body whorl are two rows of 

 smaller tubercles beneath the larger ones; outer lip 

 much expanded, digitations three, acute, divaricate; 

 basal canal oblique and subfoliated. 1...0,33. Devon, 

 Dorset, Scotland. 



TRIBE. PURPURIFERA. 



Base of the aperture with either a short posteriorly 

 ascending canal, or an oblique semi-canaliculated 

 notch, directed backwards. 



GENUS. CASSIS. 



Inflated ; aperture longitudinal, narrow, terminated 

 at the base by a short canal, abruptly reflected 

 backwards ; pillar with transverse plaits or wrinkles, 

 outer lip often dentated. 

 C. BILINEATA. Flem. p. 339. BUCCINUM B. 



