PLATE XXIV. 



PONAX CRENULATA. 



PURPLE or TRVNCAIED PURR. 



GENERIC CHARACTER. 



Bivalve. One side very obtuse, margin crenated. Hinge various, 

 generally of two teeth. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



One side very blunt or truncated : thickly striated longitudinally. 



Margin serrated. 



DoNAX RUGOSA : testa antice rugosa gibba, inarginibus crenatls. 

 Linn. Sj/st. Nat. p. 1127. A^o. 104. Mus. 

 reg. p. 494. No. 50. 

 DoNAX DENTicuLATA : testa anterius obtusissima : labils transverse 



rugosis, margine denticulato, nymphis den- 

 tiformibus. Gmel. Linn. Sj/sf. Nat. Conch, 

 p. 3263. sp. 6. 

 Cuneus ex albo & violaceo radiatus, intus vero violaceus, latere altero 

 gibbo & truncato. Truncatus. Truncated 

 Purr. J)a Costa, Br. Conch, p. 205. sp. 40. 

 Tellina intus ex viola purpurascens, in ambitu serrata. List. Jlist. 

 An 'Angl. p. 190. ///. 35. tab. 5. Jig. 35. 



