142 CONCHYLIA — D/TflFJR^. 36. 



Chemnitz, vi. p. 306, tab. 29, fig. 301, 302, 



Pennant, iv. p. 202, tab. 57, fig. 2. 



Montagu, Test. Brit. Suppl. p. 47. 



liinn. Trans, viii. p. 79, tab. 2, fig. 1. 



Tnrton, British Fauna, p. 157. 



Dillwyn, Descript. Catal. p. 165. 



Turton, Conch. Diet. p. 232. 

 Pectunculus membranaceus. Da Costa, Brit. Conch, p. 193, 



tab. 13, fig. 4, left hand. 

 Mus.nost. Western and Irish coasts. 



Shell two inches in diameter, whitish or rusty brown, finely 

 rounded in the circumference, with thin transverse plates curv- 

 ing towards the hinge, and nearly meeting each other in an 

 imbricate manner ; but not reflected at the sides nor breaking 

 into tubercles : one of the lips of the area carinate and striate. 



We have a variety dredged at Liverpool, in which the margin 

 is extremely obtuse and nearly half an inch thick, with the 

 crenatures or notches on the outside. 



leflexa. Venus testd siihorbiculari compressiuscuM, latere antico sub- 

 iruncato, laminis transversis antice reflexis, areold lanceo- 

 latd carinatd. 

 Shell somewhat orbicular and rather compressed, a little truncate 

 at the anterior side where the transverse plates are reflected, 

 and the areola lanceolate and carinate. 



Tab. nasi. 10, fig. 1, 2. 

 Venus reflexa. Montagu, Suppl. p. 40 and 168. 



Laskey, Wern. Soc. i. p. 384, tab. 8, fig. 1. 



