Mr. Maton'j Defer iptlon sf a Species of ~ TelUna^ &c. 45 



cula, cardinis dentibns duriufculis, prominulis. Differt a T. 

 cornea cardine verfus extremitatem, nee ad medium tefta?. 

 I have generally found Tellina rivalis on chalky parts of the bed 

 of the river Avon, and in rivulets communicating with it near 

 Salisbury; but I have never feen it in any confiderable abundance, 

 nor have I as yet heard of its being found any where elfe. There 

 can be little doubt however, that, if diligently fought after, it may 

 be difcovered in moft rivers and dreams which are inhabited bv 

 tellina cornea. 



Tab. 13, fig. 37, reprefents the whole fhell; 38, one valve, in order 

 to (hew the cardo^ or hinge. 

 39, 40, reprefent Tellina cornea, in order that its difference 

 from the former may be diftinclly feen. Thefe laft 

 correfpond with tab. 1, Jig. 5, of Lifter's appendix 

 An. Angl. (which is referred to by Linnreus for that 

 fpecies), and with tab. 7, fig. B. C. of Gualtieri's Indi 

 Tejl. Conch. 



XII. Obfervaiions 



