79 



T. explanata, Spengler. (Sp.) 



Pbolas explanata, Spengler, Skrivt. Nat. ii. pt. 1, 1701. 

 Talona explanata, Gray, Ann. and Mag. Nat. Hist. 2d per. viii., 1851. 

 H. and A. Adams, Genera, iii. t. 00, f. 2, 'la. Fischer, Jonrn. Conch. 

 2d ser. iii. p. 51. Morch, Cat. p. 3. 

 Pholas clausus, Gray, in Bowdich, Elem. 1822. Catlow, Conch. Notnenc. p. 3. 

 Hanley, Desc. Cat. p. G, t. 11, f. 8. Jay, Cat. 4th ed. p. 10. Sowerby, 

 Monog. Pholas. Thes. Conch, ii. p. 498J t. 107, f. 74, 75. 

 Talona clausa Chenu, Man. Conch, ii. f. 34, 35, 18G2. 

 Pholas candidus, Chemn, Conch. Cab. viii. f. 862, 1785. 

 Hab. — Western Africa. 



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

 G. W. TryoD, Jr. 



Genus Barnea, Leach. 



Barnea, Leach, teste Risso, Hist. Nat. iv. p. 376, 1826. 



" Risso, H. and A. Adams, Genera, ii. p. 326, 1853. 

 Barnia, Gray, Ann. and Mag. Nat. Hist. 2d ser. viii. 1851. Leach, Moll. Great 

 Britain, p. 254, 1S52. 



Typical Species. 

 Margins of the valves regularly rounded, hiatus long and narrow. 

 B. Australasias, Gray. 

 Barnia Australasias, Gray, Brit. Mus. Gray, Ann. and Mag. Nat. Hist. 2d 



ser. viii. p. 381. 

 Barnea Australasias, Fischer, Journ. Conch. 2d ser. iii. p. 40. H. and A. 



Adams, Genera, ii. 

 Pholas Australasias Sowerby, Mon. Pholas, Thes. Conch, ii. p. 488, t. 106, 

 f. 73. 

 Hab. — Australia. 



This shell closely resembles B. Candida of England, but may be at once 

 distinguished by its much larger size and more anterior position of the umbones. 



B. Burmanica, Philippi. (Sp. ) 



Pholas Birmanica, Philippi, Neuer Conchyl. iii. Pholas. t. 1, f. 1. 

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

 Barnea Burmanica, H. and A. Adams, Genera, ii. p. 326. 



Pholas Bakeri? Deshayes, Woodward's Manual, t. 23, f. 19. 



Barnea Bakeri? H. and A. Adams, Genera, ii. p. 326. 



Hab. — Burmah. 



The shape and sculpture of this shell, as figured by Philippi, remind one 

 strongly of our P. c o s t a t a ; it is much broader than either of the other species 

 of this section of Barnea. 



B. Bakeri I have not seen, nor could I find the original description; but the 

 figure in Woodward appears to be the same as Burmanica. 



B. Candida, Linn. (Sp.) 



Pholas Candida, Linnaeus, Syst. Nat. 1111. Linnaeus, Mus. Ulric, p. 469. 

 Alder, Cat. Northumb. Moll. p. 100. Bosc, Hist. Nat. des Coq. ii. p. 

 195. Bouchard-Chantereau, Moll. Boulon, p. 7. Brown, 111. Conch. 

 Great Britain, p. 115, t. 48, f. 6—10. Bruguiere, Encyc. Meth. t. 168, 

 f. 11. Burrow, Elem. t. 3, f. 4. Catlow, Conch. Nomenc. p. 3. Chem- 

 nitz, Conch. Cab. viii. p. 358, t. 101, f. 861. Collard des Cherres, Cat. 

 Moll. Finisterre, p. 9. Crouch, Introd. Lam. t. 2, f. 11. DaCosta, 

 Brit. Conch, p. 246. Deshayes, Moll. Expl. Sci. de l'Algerie, p. 109, 

 t. 9, D. I. f. 4, 5, (Animal.) Deshayes, Traite Elem. i. pt. 2, p. 79, t. 



2 



