PLATE X. 



PINNA MURICATA. 



THORNT WING, OR SEA HAM. 

 GENERIC CHARACTER. 



Hinge without a tooth, and placed on one side. Valves equal; open, 

 or gape at the bottom. 



SPECIFIC CHARACTER 



AND 



SYNONYMS. 



Shell triangular, striated; the striae beset with acute, ovated, and 

 concave scales or prickles. 



Pinna Muricata: testa striata, squarnis concavis ovatis acutis. 



Grnel. Lin. Syst. Nat. Conch, p. 3364. Sp. 4. 

 Pinna tenuis, striata, muricata. List. LI. Conch, tab. 370. jig. 210. 

 Pinna fragilis. Brittle. Penn. Br. Zool. No. 80. tab. 59. fig. 80. 

 Pinna tenuis costis longitudinalibus muricatis. Muricata, Thorny. 



Da Costa, tab. 16. fig. 3. p. 240. 

 Pinna recta transversim et directe striata, et rugosa, striis in summi- 



tate aculeis exasperatis, ex fusco rubro nigricans. 



Gualt. 1. Conch, tab. 79. fig. D. 



Seb. Mus. 3. t, 92. ser. \.f. 

 Concha Pinna. Ilasselq. it. 447. n. 137. 

 Pinna lata altera . Bumf. Mus. t.46.f.M. 



