PINNA. 327 



Test. p. 183. t. 5. f. 3. Maton and Racket, in Lin. 

 Trans, viii. p. 113. 

 Argenville, t. 22. f. F. Knorr, ii. t. 23. f. 1. ? Favanne, 

 t. 50. f. A 4. 



Variety. With one side indented, and the spines tubular. 

 Pinna Pernula. Chemnitz, viii. p. 242. t. 92. f. 785. 

 Pinna nobilis, Var. y. Gmelin, p. 3364. 

 Pinna, No. 4. Schroeter Einl. iii. p. 486. 

 Knorr, ii. t. 26. f. 2. 



Inhabits the coasts of the West India Islands. Chemnitz. Dor- 

 setshire. Pulteney. 



Shell four or five inches long, and half as broad ; thin, brittle, 

 semi-pellucid, and of a pale brownish red or flesh colour ; 

 it has eight or ten ribs, and a few intermediate longitudinal 

 strize. 1 think there can be no doubt that this is the P. car- 

 nea of Solander, and it is certainly distinct from the Lin- 

 neean P. muricata. P. Pernula of Chemnitz is quite dif- 

 ferent from P. nobilis, and is much more likely to be an old 

 and somewhat deformed shell of the present species. 



rigida. 7. Shell sub-triangular-ovate, with about 

 thirteen spinous ribs on one side, and the 

 other transversely wrinkled ; spines tubular. 



Pinna rigida. Solander's MSS. Portland Cat. p. 1S6. 



lot 3040. 

 Pinna pectinata. Born Mas. p. 132. 

 Pinna nobilis. Chemnitz, viii. p. 224. t. 89- f. 775. 

 Seha, iii. t. 91. f. 3. Knorr, ii. t. 26. f. 1. 



Inhabits the coasts of Curagoa. Chemnitz. 



Shell about six inches long, and nearly four broad, of a greyish 

 colour, and differs from P. nobilis, with which it has been 

 confouuded by Schroeter and Gmelin in having fewer longi- 

 tudinal ribs, and the margin of the posterior side much more 

 rounded. 



nobilis. 8. Shell sub-triangular-oblong, with 

 twenty-four longitudinal spinous ribs ; spines 

 somewhat tubular. 

 Pinna nobilis. Linn&us Syst. Nat. p. 11 60. Chemnitz, 

 viii. p. 226. t. 89. f. 776. Schroeter Einl iii. p. 477. 

 Gmelin, p. 3364. 

 Bonanni Kec. 2. f. 24, and Kirch, f. 26. Gualier, t. 78. 

 f. B. 

 Variety. With the spines extremely crowded. 



