PLATE LXI. 



MACTRA SOLIDA. 



GIRDLED. 

 GENERIC CHARACTER. 



Animal a Tethys, Bivalve, sides unequal. Middle tooth compli- 

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



SPECIFIC CHARACTER 



AND 



SYNONYMS, 



Thick, transversely striated and girdled. 



Mactra SOLIDA : testa opaca laeviuscula subantiqua. Gmel. Linn. 



Sj/sL Nat. p. 3259. sp. 13. 

 Concha crassa, ex altera parte compressa, ex altera subrotunda. 



Lisf. H. An. Angl. p. 174. tit. 24. tab. ^. fig. 



24. — Pectunculus crassiusculus albidus. List. 



H. Conch, tab. 2oZ. fig. 87. 

 Chama media fasciata crassa Pctiv. Gaz. tab. 94. fig. 7. 

 Chama minor plurimis fasciis. Id. ib, fig. 6. 

 A Pectunculus with azurine circular lines interpolated. Leigh. 



Lancashire, tab. 3. fig. 6. 

 Thick white striated Chama. IVallis Xorthum, p. 395, 



