213 



often nearly smooth, often with strong spiral striee and 

 longitudinal fine elevated membranaceous ones; apex 

 small and pointed ; aperture oval, outer lip thick, 

 toothed (but not always) internally. 2 ..1. Extremely 

 common and excessively variable. 



GENUS. DOLIUM. 



Thin, ventricose, inflated, usually subglobose, rarely 

 oblong, with transverse belts ; the outer lip denta- 

 ted or crenulated its entire length ; aperture longi- 

 tudinal, emarginated at the base. 

 D. PERDIX. Lam. 7.F. p. 342. BUCCINUM P. 

 Lin. 1197. D.p. 583. Mart. f. 1078. List. t. 984. 

 /. 71. Knorr. 3. t. S.f. I. Mont. p. 244. t. S.f. 5. 

 Dor. Cat. p. 44. t. 15. /. U.Pult. Dor. p. 41. 

 Suboval, with five or six volutions, the body whorl very 

 large and tumid, the others small in proportion, marked 

 with flat transverse ridges which are broader than the 

 interstices, yellowish brown, marbled and spotted with 

 white ; aperture large and oval, the outer lip thin and 

 plain, inner lip a little umbilicated. 1, but the foreign 

 specimens infinitely larger. Weymouth. 



GENUS. BUCCINUM. 



Oval, or oval conical; aperture longitudinal, base 

 notched, no canal ; pillar not flattened, turgid above. 



