J56 i\//-. Wii-LiAM Wood's Ob/ervatms on the 



(.llfFerencc is to be perceived between the hinge of that fhell and of 

 the M. lutraria. I have therefore omitted it, in order that the 

 number of figures might not be unneceffarily increafed. 



Of the two fpecies of Donax, defcribed by Bntilh conchologifts, 

 the Trunciiltis only is in my poflTeffion ; but it is more than probable, 

 fiom the refemblance thefe two fliells bear to each other, that their 

 hinges are not very diflimilar. 



I have never feen the Fetitts deflorata, defcribed and figured by Mr. 

 Pennant in the BrhiJI: Zoology. The V. ftnuofa and ovata are not 

 among my {hells ; and the hinge of the V. rotmdaia is too like the 

 decuffata to need a defcription. The hinge of the V. borealh will be 

 found, upon comparifon, to refemble exaftly that of the MaElrar 

 alba- therefore it would be placed with more propriety in that 

 genus. The Z)(5«i7.v /rw ought at the fame time to be removed into 

 the third divifion of the g-^nus Venus, where the contour of the ftaell, 

 as well as the formation of the hinge, will point out its proper 

 iTtuation. . ^ 



In the genus Area, it was thought unneceflary to give a figure 

 of the la£lea, after exhibiting the ftriking difference between the 

 hinge of the A. Nucleus and Glycymeris. 



Of the genus Pe^en, OJlrea, Anomia, and Mytllns, it is fufficient 

 to fay, that a fpecimen has been given from each, as the fpecies are, 

 for tl-ie moft part, deftitute of tee:h, and the iliells merely united by- 

 cartilage. 



'' MYA. 



truncate- Linn. Syjl. Nat. ed. Gmel. I. p. 3217. Pcnn. Br. Zool. 



No. 14. t, Afi. f, 14. DaCoJi. Br. Conch, p. 233 /. 16. 



f.\. I. — Elem. Conch, t. 7. f. 16. Lijl. Conch, t. 4^8. 



/. 269. — H'lft. An. Ang. t. $. f. 36. Gault. Tejl. i. 91. 



f:D, Chemn, Conch. 6. t.\. f. i, 2. 



Tab. 

 8 



