PLATE CIII. 



TELLINA RIGIDA. 



FLAX AND RIDGED TELLEN. 

 GENERIC CHARACTER. 



The hinge usually furnished with three teeth. Shell generally- 

 sloping on one side. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Somewhat depressed, subrotund, thick, with numerous transverse 

 thread-like ridges, and a still deeper longitudinal depression near the 

 posterior end. 



Tellina Rigida : testa subdepressa subrotunda crassa transversim 



confertissime striata, poslice Iongitudinaliter ma- 



gis depressa. 

 Tellina crassa. Penn. Br. Zool. p. 87. sp. 2S ? 

 Pectunculus depressior subrotundus, dense et transversim strigatus. 



Depressior. Da Costa Br. Conch, p. 194. sp. 



30. Tab. 13. Jig. 4. 



Da Costa, who appears to be the only author that describes this 

 shell, says he received it from the coaft of Cornwall. 



