CONCHYLIA— D/T/ZFJSA 31. 125 



Tellina crassa. Lister, Conch, tab. 376, fioj. 218. 

 Mus. nosl. Dawlisli and Teigiimouth sands, generally single 

 valves : fine and perfect from Guernsea. 



Shell about half an inch long, and nearly an inch broad, 

 whitish with purple rays, much thicker and more abrupt at the 

 broader end than the Donax Trunculus ; and may be known by 

 the punctures in the interstices of the longitudinal striae, and the 

 rough ridges on the truncated slope, which is elevated in the 

 middle into a kind of keel : inside white, with a lateral tooth on 

 each side the primary ones, 



^=# Margine inferno integerrimo. 3-5. 

 With the inner margin very entire. 



DoNAX testa ovato-oblongd Icsvi, vittd albd longitudinali, couipianata. 



dentibus lateratibus in utrdque valvd. 

 Shell oval-oblong smooth, with a single white longitudinal band, 

 and lateral teeth in both valves. 



Tab. nost. 7, fig. 13, 14. 

 Donax complanata. Montagu, p. 106, tab. 5, fig. 4. 

 Linn. Trans, viii. p. 75. 

 Tiirton, British Fauna, p. 156, 

 Pennant, Brit. Zool. iv. p. 198. 

 Dorset Catal. p. 34. 

 Dillwyn, Descript. Catal. p. 150. 

 Turton, Conch. Diet. p. 42. 

 Tellina variegata. Lister, Conch, tab. 384, fig. 227. 

 Mus. nost. Torbay, and Guernsea. 



