328 PINNA. 



Pinna aculeato-squamosa. Chemnitz, viii. p. 228. t. 89. f. 

 777. 



Inhabits the Mediterranean. Linnaus. Adriatic. Chemnitz, 

 who says the Variety has been found at Trieste. 



Shell about seven inches long, and rather less than half as 

 broad, of a pale reddish or rose colour ; it is narrower and 

 less rounded on the posterior side than P. rigida, and ac- 

 cording to Chemnitz, has almost twice as many longitudinal 

 ribs, which are extended equally over the whole surface ; 

 the tubular spine-like scales in some specimens are erect, 

 and in others reflected. 



muricata. 9. Shell sub-triangular, with numerous 

 longitudinal ribs, which are alternately 

 broader and spinous. 



Pinna muricata. Lituiaus Si/st. Nat. p. 1160. Born Mils. 



p. 133. Chemnitz, viii. p. 235. t. 91. f. 781. Schroeter 



Einl. hi. p. 478. Gmelin, p. 3364. 

 Pinna nebulosa. Solanders MSS. 

 Lister Conch, t. 370. f. 10. ? Rumphius, t. 46. f. M. Pe- 



tiver Amb. t. 19. f. 14. Gualter, t. 79- f. D. Knorr, 



vi. t. 20. f. 1. 

 Inhabits the Mediterranean. Linnaus ? East Indian Seas. 



Chemnitz. 

 Shell about five inches and a half long, and rather more than 

 two inches and a half broad, of a horn colour, and pellucid ; 

 it has about sixteen or eighteen longitudinal ribs, of which 

 each alternate one is broader and armed with somewhat tu- 

 bular thorn-like scales. It appears from his MSS. that Dr. 

 Solander considered P. squamosa to be the Linnasan P. mu- 

 ricata, and that the present shell is his P. nebulosa, but the 

 latter agrees best with the description which Linnaeus has 

 given in his account of the Museum of the Queen of 

 Sweden. 



adusta. 10. Shell sub-triangular-ovate, transversely 

 wrinkled, with several smooth, and a few 

 spinous longitudinal ribs. 



Pinna adusta. Chemnitz, viii. p. 237. t. 91. f. 782. 

 Pinna exusta. Gmelin, p. 3366. 

 Pinna, No 7. Schroeter Einl. iii. p. 488. 

 Seba, iii. p. 91. f. 2.? 

 Inhabits the coasts of Manilla. Chemnitz. New Zealand. 

 Humphreys. 



