CO^CRYLIA—DITHYRA. 1. 11. 



being nearly closed when the valves are shut, where it is well round- 

 ed and not produced into any kind of beak-like elongation, giving 

 the outline a club-shaped appearance : the accessorial valve at the 

 back is of ah oblong shape. 



Pholas testa subconicd hiantissimd , latere antico angulosorostrato, atnata. 



postici lamina compressd recurvd, intus costd longitudinali. 



Shell somewhat conic and very open, angular and beaked at the 

 anterior end, with a flat recurved process behind, and a longitudinal 

 rib on the inside of the valves. 



Pholas striata Linn. Syst. Nat. p. 1111. 



Gmelin, Syst. p. 3215. 

 Turton, Linn. Syst. iv. p. 172. 

 Pennant, Brit. Zool. iv. p. 157. 

 Chemnitz, viii. p. 364, tab. 102, fig. 864 to 871. 

 Montagu, Test. Brit. p. 26. 

 Linn. Trans, viii. p. 32. 

 Turton, Brit. Fauna, p. 146. 

 Donovan, Brit. Shells ii. tab. 117. 

 Dillwyn, Descript. Catal.. p. 37. 

 Wood, Conch, p. 83, tab. 16, fig. 1 to 4 and fig. 8. 

 Turton, Conch. Diet. p. 147- 



Mus. nost. Taken from an old yardarm on Brixham pier, and which 

 had been drifted in from the bay. 



Shell three-eights of an inch long and about half an inch 

 broad, of a conical or rather wed^e-form shape, with the gape 



c2 



