Cl. VI. MACTRA. FLAT-SIDED COCKLE, I9; 



Lin. Tr. viii. 72. Mont. Test. Br. QQ. t. 3.f. 5. 9. triangu- 



laris. 



* M. with a somewhat triangular shell; one 

 strong forked hinge -tooth in one valve, on the 

 other a triangular depression between two small 

 teeth; minute. 



Inhabits the south coast of Devonshh^e. 



Lin. Tr. viii. 72. ib. vi. Mont, Test. Br. Q8. t. 3. 10. BOYSli, 



^.18./. 9. 12. /. 7. __. 



* M. with a smooth ovate shell ; hinge-tooth 

 strong, a little prominent; size of a horse- 

 bean. 



Found in Salcombe and Biddeford bays ; also 

 in Kent. 



Lin. Sysf. 1126. No. 101. List. Angl. tab. iv. 11. lutra- 



Gm. Lin. 325g. fg. IQ. ^^■^- 



tCLT^G 



Faun. Suec. No. 2128. Lin. Tr. viii. 73. " ' 



Mont. Test. Br. 100. 



M. with an oblong thin shell; one side much 

 extended, and gaping ; for w^hich reason Li?i- 

 nceus once placed it among the MycB. Breadth 

 five inches ; length two and a half. 



Inhabits the sea near the mouth of rivers; 



o 2 



