212 PROCEEDINGS OP THE ACADEMY OF 



Subfamily JOUANNETINyE, Tryon. 

 Genus Pholadidea, Turton. 



Pholadidea, Turton, Conch. Diet. p. 147, 1819. Gray, Zool. Proc. p. 188, 1847. 



Gray, Ann. and Mag. Nat. Hist. 2d ser. viii. 1851. Chenu, Man. 



Conchyl. ii. Fischer, Journ. Conchyl. 2d ser. iii. H. and A. Adams, 



Genera, ii. 

 Pholadidoidea, Goodall, teste Blainville, Diet. Sci. Nat. xxxix. p. 535, 1826. 

 Pholadididea, Agassiz, Nomenc. Zool. 1846. 

 Cadmusia, Leach, Moll. Gt. Brit. p. 254, 1852. 



Pholidcea, Leach, teste Swainson, Malacol. 1840. 



*Siphonal valves without any tubular elongation and not folded. 



P. p apy r ac ea, Solander. (Sp.) 



Pholas papvracea, Solander, MSS. Turton, Conch, dith. Brit. p. 2, t. 1, f. 

 1_4. Brown, 111. Brit. Conch, p. 114, t. 49, f. 4, 6, 7, 8, 9. Catlow, 

 Conch. Nomenc. p. 4. Chenu, 111. Conch. Pholas, t. 3, f. 1. Fleming, 

 Brit. Anim. p. 456. Hanley, Desc. Cat. p. 9. Jay, Cat. 4th edit. p. 

 10. Mawe, Conch, t. 3, f. 5. Philippi, Conchyl. iii. Pholas, t. 2, f. 3. 

 Reeve, Conch. Syst. t. 2, f. 3. Sowerby, Genera, Pholas, f. 3. Sowerby, 

 Conch. Man. f. 56. Sowerby, Monog. Pholas, Thes. Conch, ii. p. 497, 

 t. 106, f. 66. Thorpe, Brit. Mar. Corch. p. 29. Wood, Index Test. 

 Supp. t. 1, f. 3. 



Pholadidea papyracea, Gray, Ann. and Mag. Nat. Hist. 2d ser. viii. p. 384. 

 Gray, Figs. Moll. Anim. t. 338, f. 8. H. and A. Adams, Genera, iii. 

 t. 90, f. 1, la, 16. Cbenu, Man. Concb. ii. f. 30, 31. Fischer, Journ. 

 Conch. 2d ser. iii. p. 51. Forbes and Hanley, Brit. Moll. i. p. 123, t. 

 5, f. 36 ; Animal t. F, f. 4. Sowerby, 111. Brit. Shells, t. 1, f. 12. 

 Woodward, Man. t. 23, f. 20. 

 Pholas lamellata (voung sbell), Turton, Concb. Dith. Brit. p. 4, 1. 1, f. 5, 6. 

 Brown, 111. Brit. Conch, p. 114, t. 49, f. 10, 11. Chenu, 111. Conch. 

 Pholas, t. 3, f. 2. Fleming, Brit. Anim. p. 456. Wood, Index Test. 

 Supp. t. 1, f. 3. 

 Pholas striata, Blainville, Man. Malacol. t. 8 bis, f. 7. Cuvier, Peg. Anim. 

 (edit. Griffith), t. 8, f. 1. Cuvier (Henderson, edit.), t. 41, f. 1. 

 Wyatt, Conch, t. 3, f. 5. 

 Pholadidea loscombia, Turton, Conch. Diet. p. 147. 

 Pholadidea Goodall ii, Blainville, Diet. Sc. xxxvii. p. 532. 

 Cadmusia Solanderiana Leach, Moll. Gt. Brit. p. 254, t. 12, f. 1, 2. 

 Pholas Vibonensis, (fossil,) Philippi, Enum. Moll. Sicil. ii. p. 4, t. 13, f. 5. 

 Zirfcea? Vibonensis, Gray, Ann. and Mag. Nat. Hist. 2d ser. viii. p. 385. 

 Hab. Europe. 



Coll. Acad. Nat. Sci. Coll. Isaac Lea, LL. D. Coll. J. C. Jay, M. D. Coll. 

 Geo. W. Tryon, Jr. 



Pholas lamellata of Turton is the young of this species, although for a 

 long time it was considered distinct. The differences between the young and 

 mature shells in this family are so great, that in several cases the former have 

 been described as different. Even the mature shell varies much, and the 

 result has been the creation of a number of species which more recent authors 

 have been obliged to suppress. 



P. sp athulata, Sowerby. (Sp.) 



Pholas spathulata, Sowerby, Zool. Proc. p. 162, 1849. Sowerby, Monog. 



Pholas, Thes. Conch, ii. p. 497, t. 106, f. 69, 70. 

 Pholadidea spathulata, Gray, Ann. and Mag. Nat. Hist. 2d ser. viii. p. 

 384. H. and A. Adams, Genera, ii. p. 329. Fischer, Journ. Conch. 

 2d ser. iii. p. 51. 

 Hah. New Zealand, 



[April, 



