112 CONCHYLIA— D77^i/yi2^. 28. 



remote and lateral, with the hinder one produced into a very long 

 band, be considered as a constant and unerring distinction. 



From the Tellina genus it differs in many essential and natural 

 characters. It is of a more orbicular shape, closed at the sides, and 

 without lateral teeth; the beaks are very prominent, with a deep 

 curvature under them, and on this side there is more or less of a 

 flexuosity, being on the opposite side to the flexuosity of the Telli- 

 na : the cartilage also is much less prominent, having an internal 

 additional ligament fixed in the transverse cavity. 



From the Venus tribe it is distinguished, in never possessing three 

 teeth in both the valves, and in the elongated internal cavity on the 

 anterior side of the teeth. 



* Fovea interna ohliqua. 1-2. 

 With the internal cavity oblique. 



lactea. LuciNA testa orbiculari eequilaterall, striolis transversis irregularibus. 

 Shell orbicular equilateral, with fine irregular transverse striae. 

 Tab nost. 1 , fig. 4 and 5. 

 Tellina lactea. Linn. Syst. Nat. p. 1119. 

 Gmelin, Syst. p. 3240. 

 Turlon, Liun. Syst. iv. p. 195. 

 Chemnitz, vi. p. 130, tab. 13, fig. 125. 

 Pennant, Brit. Zool. iv. p. 182. 

 Montagu, Test. Brit. p. 70. tab. 2, fig. 4. 

 Linn. Trans, viii. p. 56. 

 Turton, British Fauna, p. 151. 

 Dorset Catal. p. -30, tab, 5, fig. 9. 



