Hinges of Bntijlj Bivnlve Shell's, . 165 



JiultQrum, him. Syjl. Naf. ed. Gmcl. i. /. 3258. Pcnn. Br. Zool. 

 No. 30. /. 49. /. 30. Dii C'jjl. Br. Conch. p. 196. /. i 2. 

 y^ 3. 3. 1.111. Conch, t. 251./. 85. Gault.Teji. t.yi. 

 f. C. Chemn. Conch. 6. t. 2'^. f. 224 — 227. 



Tab. XVI. Fig. 7, 8. 



There is an ereft tooth in the upper valve of this fhell, 

 ■•■>-'- near the beak, fomewhat limilar in fliape to the 

 great one in the M. lutraria. This fits within a reel- 

 angular tooth in the lower valve, which likcwile 

 contains four remote teeth, like laminar, receiving 

 between them two from the upper valve. 



I have referred for this fhell to Mr. Pennant's TelUna 

 radiatay as both his defcription and figure agree ex- 

 a6l]y with the JLinnean M. flnltorum. His fhell of 

 that name (A^>. 42. t. ^1, f. ^z.) is, perhaps, only a 

 young one of the M. Jolida, 



alba. Tab. XVL Fig. 9— 12. 



I believe we are indebted for the difcovery of this fliell 

 to that accurate conchologift, William Boys, Efq. 

 who found it on the Sandwich ihore, where I have 

 fince met with it in abundance. 



The binge has the true fpoonOiaped cavity peculiaj 

 to the genus Ma^ra^ with a fmall tooth fituatcd 

 clofe to it ill the upper valve, w^hich has no remote 

 teeth. The lower valve is provided with two. 



;, V '^ DONAX. 



iruncutus, Lynn, Syf* Nat. ed. Gmel, i. /• 3263, Penn. Br.Zool. 

 No, 45. /. SS' /• 45* ^^ ^^A ^^' Conch, f, 207. 



t, 14. 



/^Ci. 



