112 CONCHYLIA—/>/T/l ri?^. 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 les» 

 of a flexuosity, being on the opposite side to the flexuosity of the 

 Tellina: 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. 



* Foved internd ohliqud. 1 -2. 

 With the internal cavity oblique. 



lactea. LuciNA testd orbiculaH (squilaterali, striolis transversis irre- 

 gularibus. 

 Shell orbicular equilateral, with fine irregular transverse striae. 



Tab. nost. 7, fig. 4 and 5. 

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

 Gmelin, Syst. p. 3240. 

 Turlon, Linn. 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. 



