PLATE LXXVII. 



VENUS ISLANDICA. 



THICK VENUS. 



GENERIC CHARACTER. 



Bivalve. Hinge furnished with three teeth; two near each other, 

 the third divergent from the beaks. 



SPECIFIC CHARACTER 



SYNONYMS. 



Shell strong, thick, heavy, covered with epidermis ; space in which 

 the hinge is inserted gaping. Margin acute and entire. White 

 within. 



Venus Islandica : testa transversim striata rudi, nymphis hiantibus, 

 ano nullo. Gmel. Linn. Sj/st. Nat. 3271. sp. 15. 



Pectunculus major crassus, albo castaneus. Crassus, Da Costa Br, 



Conch, sp. 183. tab. 14. fig. 5. 

 Concha 6 maximis, admodum Crassa, rotunda, ex nigro rufescens. 



List, H. An. Angl. p. 170. tit. 22. tab. ^.fig. 22. 

 Pectunculus maximus, subfuscus, valde gravis. List. H. Conch, tab. 



212. fig. 108. 

 Venus mercenaria. Commercial. Penn. £r. Zool, No. 47. tab. 



bZ. fig. 4.1. 



