80 



3, f. 13, 14. Deshayes, Encyc. Meth. iii. p. 753. Dillwyn, Desc. Cat. 

 i. p. 3G. Donovan, Brit. Shells, iv. t. 132. Fleming, Brit. Anim. p. 

 457. Forbes and Hanley, Brit. Moll. i. p. 117, t. 4, f. 1, 2. Gerville, 

 Coq. de»la Manche, p. 10. Gmelin, Syst. Nat. p. 3215. Gualtieri, 

 Test. t. 105, f. 8. Hanley, Desc. Cat. p. 5, t. 2, f. 3. Jay, Cat. 4th ed. 

 p. 9. Karsten, Mus. Lesk. p. 151. Lamarck, Anim. sans Vert. v. p. 

 444. Lamarck, (Desh. edit.) Ti. p. 44. Lister, Anim. Angl. p. 193, 

 t. 5, f. 39. Macgillivray, Moll. Aberd. p. 306. Mawe, Introd. Conch, 

 t. ?,. f. 2. Menke, Syn. p. 73. Middendorff, Mai. Rossica, iii. p. 79. 

 Montagu, Test. Brit. p. 24. Miiller, Zool. Dan. prodr. p. 251. Pen- 

 nant, Brit. Zool. iv. p. 76. Philippi, Enum. Moll. Sicil. i. p. 3 and ii. 

 p. 4. Poli, Test. utr. Sicil. t. 7, f. 12, 13. Potiez et Michaud. Gal. 

 Moll. ii. p. 269. Pultney, Dorset. Cat. p. 26. Schroter, Einleit. Conch, 

 iii. p. 539. Sowerby, Illust. Brit. Conch, t. 1, f. 9. Sowerby, Monog. 

 Pholas, Thes. Conch, ii. p. 488, t. 103, f. 21—23. Thompson, Rep. 

 Fauna Ireland, p. 263. Thorpe, Brit. Mar. Conch, p. 31. Turton, 

 Conch. Diet. p. 144, f. 79. Turton, Conch, dith. Brit. p. 10. Wood, 

 Gen. Conch, p. 79, t. 14, f. 3, 4. Wood, Index Test. Pholas, t. 2, f. 3. 

 Wyatt, Conch, p. 27, t. 3, f. 2. 



Barnia Candida, Leach, Moll. Great Britain, p. 255. Gray, Ann. and Mag. 



Nat. Hist. 2d ser. viii. p. 382. Gray, Figs. Moll. Anim. t. 338, f. 6. 

 Barnea Candida, H. and A. Adams, Genera, ii. p. 326. Chenu, Man. Conch, 

 ii. f. 17, 18. Fischer, Journ. Conch. 2d ser. iii. p. 49. 

 Pholas dactyloides, Delia Chiaje, Mem. iv. t. 65, f. 4. 



" papyracea, Spengler, Skrivt. Nat. ii. pt. 1, t. 1, f. 4, 1791. (Not of his 



diagnosis.) Lister, Hist. Conch, t. 435, f. 278. 

 " silicala, Deshayes, in Lam. Anim. sans Vert. vi. p. 45, 1835. Anton, 

 Verzeich. der Conch, p. 1. Catlow, Conch. Nomenc. p. 4. Delessert. 

 Rec. t, 1, f. 19. Hanley, Desc. Cat. p. 6. 

 Hab. — England. Ireland. 



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

 G. W. Tryon, Jr. 



B. la n c e o lata,»D'Orbigny. (Sp.) 



Pholas 1 a n c e o 1 a t a, D'Orb. Moll. Voy. Amer. Merid. p. 497, t. 77, f. 18, 19. 



Hab. — Patagonia. South of the Rio Negro. 



This shell appears to be distinct from B. Candida, although very nearly 

 allied to it. It is not so much inflated across the umbones as that species; it 

 is more narrowly elongate and acuminate at the buccal region, more rounded 

 posteriorly, and the hinge tooth is larger. D'Orbigny's figures also show a vast 

 difference in the great prominence of the concentric raised striae. 



The figures of D'Orbigny represent probably a young shell. 



Subgenus Anchomasa, Leach. 

 Anchomasa, (genus,) Leach, Moll. Great Britain, p. 253. 



Ventral anterior margin of the valves cmarginale ; hiatus short and wide. 

 B. Man ill en sis, Philippi. (Sp.) 

 Pholas M a n i 1 1 e n s i s, Philippi, Zeitschr. fiir Malak. p. 72, 1847. Philippi, 



Neiier Conch, iii. Pholas. t. 1, f. 2. 

 Barnea M a n i 1 1 e n s i s, H. and A. Adams, Genera, ii. p. 326. Fischer, Journ. 



Conch. 2d ser. iii. p. 49. 

 Barnia Manillensis, Gray, Ann. and Mag. Nat. Hist. 2d ser. viii. p. 382, 

 1851. 

 Pholas Manilla, Sowerby, Proc. Zool. Soc. p. 161, 1849. Sowerby, Monog. 

 Pholas, Thes. Conch, ii. p. 487, t. 103, f. 17, 18. Jay, Cat. 4th. edit, 

 p. 10. 



