Mr. WixLiAM Wood's Ob/irvationsy €sc. 155 



for any thing I know to th« contrary, exhibit peculiarities in the 

 formation of their hinges, not to be found in this paper. Perhaps 

 what is ahea<Jy finiflied may excite fome more able member of 

 this Society, whofe cabinet is more extenfive, to complete the 

 fubjedt, 



1 am indebted to the accurate pencil of ray friend Mr. Henry 

 Boys for the Solen pellucidut, Tellina bimaculatay Venus ChionCy and 

 Venus undata. My acknowledgments mufl: likewife be made to his 

 moft refpe£lable father, William Boys, Efq. for the ready accefs 

 which I have at all times had to his colledtion. 



In the courfe of the following remarks, it will be noticed, that 

 feveral fhells are totally negle6ted, whicli are too common to be 

 wanting even in a very confined coUeftion. To account for this, 

 it will be neceflary to mention all the (hells belonging to the Bri- 

 tifh feries of bivalves which have not been inferted, and to give a 

 fufficient reafon for their omiflion. 



Of the genus Mya, all have been figured, except the M. dubi*- 

 of Mr. Pennant which at prefent I have not in my colle6tion. 



Of the Soiines, I have neither the Legumen nor Cultellus. But 

 their lofs is of little confequence, as the teeth of the former (ac- 

 cording to Mr. Pennant) exa<aly referable thofe of the S. pellucidus ; 

 whilft the latter, having a fingle tooth on both fides of the hinge, 

 will probably not differ materially from the Vagina. The hinge of 

 the 5. Enfis agrees exadlly with that of the Siltqua. 



Among the Tellina:, the T.fragilis is unknown to me. The T. tri- 

 fafciaia, cornubienp^ and donacina, are wanting, and the hinge of 

 t\\t Fabula IS V\kG. th& planata. 



There is too great a fimilarity in the hinges of the fpecies be- 

 longing to the genus Cardium, to make more than one figure ne- 

 C'effary. 



Excepting the two lateral teeth of the Ma^ra folida, no effential 



X 2 difference 



