38 PHOLAS. 



pusilla. 6. Shell oblong*, rounded, with arched 

 striae. 



Pholas pusillus. Linn&us Syst. Nat. p. 1111. Chemnitz, 

 viii. p. 365. t. 102. f. 867 to 871. Schroeter Einl. iii. 

 p. 540. Gmelin, p. 3215. 

 Pholas striatus. Montagu Test. p. 26. Donovan, iv. t. 

 117. Maton and Racket, in Lin Trans, viii. p. 32. 

 Wood's Conch, p. 83. t. 16. f. 1,2, 4, and 8. 

 Rumphius, t. 46. f. H. Petiver Amb. t. 19. f. 8. Phil. 

 Trans, lv. t. 1. f. 1 to 4. Favanne, t. 60. f. F. 1 to 

 F. 7. Enc. Method, t. 170. f. 1,2, and 3. 

 Inhabits the coasts of Amboyna. Rumphius. American Seas. 

 Linnaus. Often found burrowed in the planks of ships 

 from the Mediterranean. Montagu. 

 Shell nearly half an inch long, and about twice as broad, white, 

 and of a remarkably conoid shape ; the broad end is strongly 

 reticulated with arched stria?, and the other parts more 

 faintly striated, except a triangular space at the margin, which 

 is smooth ; the shield which covers the hinge is nearly heart- 

 shaped, and beneath it, is a narrow plate, joined to the mem- 

 brane which connects the valves; in the front is another 

 narrow plate and membrane which seems to prevent the 

 shell from opening, except at the ends. — It was the opinion 

 of the late Dr. Solander, that the Linnaean P. striata, and 

 P. pusilla, belong to the same species. 



parva. 7. Shell ovate, with reticulated striae, and 

 the teeth of the hinge issuing from a tubercle. 



Pholas parvus. Pennant Zool. iv. p. 77- 1. 40. f. 13. Mon- 

 tagu Test. p. 22. t. 1 . f . 7 and 8. Maton and Racket, 

 in Lin. Trans, viii. p. 33. Wood's Conch, p. 82. 

 Pholas crenulatus. Solander s MSS. 

 Inhabits the shores of Pensacola in West Florida, and of Aber- 

 gelli in Denbighshire, burrowed in logs of woods. Pennant. 

 Coast of Devonshire. Montagu. 

 Shell half or three quarters of an inch long, and about twice as 

 broad, white, and rough with reticulated, somewhat muri- 

 cated stria?, except at the smaller end, towards which it be- 

 comes more smooth. It may be readily distinguished from 

 the young shells of any other species, by the knob at the base 

 of its teeth. 



cordata. 8. Shell turgid, and marked with fine 

 elevated striae behind ; hiatus heart-shaped. 



