CO^CHYLW— D ITU YK A. -56. 2.5r 



Tab. nosl, 11, fig. 15. 

 Tellina amnica. Gmelin, Syst. p. 3242. 



Tnrton, Linn. Syst. iv, p. 197. 



Chemnitz, vi. p. 1,38, tab. 13, fig. 134. 



Pennant, Brit. Zool. iv. p. 185. 



Linn. Trans, viii. p. 60. 



Dorset Catal. p. 31, tab. 7, fig. 2. a. 



Wood, Conch, p. 153, tab. 47, fig. 6. 



Dillwyn, Descript. Catal. p. 105. 



lurton. Conch. Diet. p. 168. 

 Tellina rivalis. Linn. Trans, iii. p 44, tab. 13, fig. 27, 28. 



Donovan, British Shells, ii. tab. 64, fig. 2. 

 Cardium amnicum. Montagu, Test. Brit. p. 86. 



Turton, British Fauna, p. 154. 

 31tis. uost. In slow rivers and streams. 



Shell about a quarter of an inch long, and three eighths of an 

 inch broad, of a brownish or blueish horn-color, thin and semi- 

 transparent, sometimes yellowish towards the margin, a little 

 produced and narrower at one end, with regular transverse 

 grooves ; inside blueish : beaks prominent, obtuse, nearer one 

 end. 



Cyclas testd obliqud tumidd inaqtiilaterali transversiin stri- jnuiUa 



olatd, umbonibus depressis. 

 Shell oblique tumid inequilateral and obscurely striate transversely, 

 with the beaks depressed. 



Tab. nost. 11, fig. 16, 17. 

 Tellina pusilla. Ginelin, Syst. p. 3236, 



2k 2 



5. 



