PLATE CVL 



MACTRA STULTORUM, 



RATED MACTRA. 



GENERIC CHARACTER. 



Animal a Tethys. Bivalve, sides unequal. Middle tooth com« 

 plicated, with a little groove on each side ; lateral teeth remote. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell semi-transparent, smooth, with faint radiations ; within pur- 

 plish. 



Mactra Stultorum : testa subdiaphana Isevi obsolete radiata, 

 intus purpurascente, vulva gibba. Gmel. Sj/st 

 Nat. T. I. p. 6. p. 3258. sp. 11. 

 Pectunculus triquetrus ex flavo radiatus. List. II. Conch, tab. 251. 



fig* B5 ' 



Mactra stultorum, Simpleton. Pain. Br. Zool. No. 42. tab. 52. 



fig. 42. 

 Tfigonella tenuis admodum concava ferrugineo-cinerea radiata. Ra- 

 diata. Da Casta Dr. Conch, p. 196. sp. 32.— 

 Tab. 12. fig. 3. 3. 



H 2 



