Mr. MaTOn'j Defcript'wn of a Species o/TeWna, &c. 45 



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

 cornea cardine verfus extremitatem, nee ad medium teftje. 

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

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

 Salifbury; 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 by 

 Tellina cornea. 



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

 to fhew the car do, or hinge. 

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

 from the former may be diftinftly feen, Thefe laft 

 correfpond with tab. 1, fg. 5, of Lifter's y^/^W/.v 

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

 fpecics), and with tab, 7, fig. B. C, of Gualtieri's Ind.. 

 Teji. Conch.. 



XII. Objervations 



