87 



Jay, Cat. 4th edit. p. 9. Sowerby, Monog. Pholas, Thes. Conch, ii. 

 p. 491, t. 102, f. 5, 6, 7. 



Parapholas Californica, Conrad, Proc. Acad. Nat. Sc. p. 121, 1848. Con- 

 rad, Journ. Acad. Nat. Sc. 2d ser. i. p. p. 214, and ii. p. 335. Carpen- 

 ter, Zool. Proc. p. 209, 1856. Carpenter, Rep. on W. Coast Mollusca. 

 Carpenter, Check-List W. Coast Shells. 



rholas Janelli, Deshayes, Proc. Zool. p. 357, 1839. Deshayes, Guerin's 

 Mag. Zool. t. 14, 15, 16, 1840. Catlow, Conch. Nomenc. p. 3. Chenu, 

 111. Conch. Pholas, t. 3, f. 5. 



Parapholas Janelli, H. and A. Adams, Genera, ii. p. 330. Chenu, Man. 

 Conch, ii. f. 41, 42. Fischer, Journ. Conch. 2d ser. iii. p. 52. 

 Martesia C al i for nic a, Chenu, Mon. Conch, ii. f. 53. 



Hab. — California. 



Coll. Acad. Nat. Sciences. Coll. J. C. Jay, M. D. Coll. G. W. Tryon, Jr. 



P. quadrizonalis, Spengler. (Sp.) 



Pholas quadrizonalis (young shell), Spengler. Sowerby, Monog. Pholas, 

 Thes. Conch, ii. p. 492, t. 108, f. 88, 89. 



Parapholas quadrizonalis, Gray, Ann. and Mag. Nat. Hist. 2d ser. viii. 

 II. and A. Adams, Genera, iii. t. 90, f. 4, 4a. Fischer, Journ. Conch. 

 2d ser. iii. p. 52. 

 Pholas Incii (adult), Sowerby, Zool. Proc. 1849. Sowerby, Monog. Pholas 



Thes. Conch, ii. p. 491, t. 105, f. 45, 46. 

 Hab. — Torres' Straits. 



Genus Penitella, Valenciennes. 

 Penitella, Valenciennes, Voy. Venus, atlas, t. 24, (no description), (part.) 

 Journ. Conrad, Acad. Nat. Sc. 2d ser. ii. p. 335. 

 Parapholas (part.), Gray, Ann. and Mag. Nat. Hist. 2d ser. viii. Carpen- 

 ter, Zool. Proc. 1856. 

 Pholadidea (part.), Carpenter, Rep. on W. Coast Mollusca and Check-List. 

 I cannot find that the test of the Mollusca of Voy. Venus was published, 

 but the figure and the name printed on the plate sufficiently indicate the 

 genus. The three other species of Valenciennes I am unable to make out. 

 No. 2 resembles Martesia striata. No, 4 is a very young shell. 



P. pen it a, Conrad. (Sp.) 



Pholas p e n i t a, Conrad, Journ. Acad. Nat. Sc. vii. p. 237, t. 18, f. 7. Jay 

 Cat. 4th edit. p. 10. 



Parapholas penita, Carpenter, Zool. Proc. p. 210, 1856. Carpenter, Rep. 

 on West Coast Mollusca. 



Pholadidea p e n i t a, Carpenter, Check-List W. Coast Shells. Carpenter, Rep. 



on W. Coast Mollusca. 

 Pholas concamerata, Deshayes, Rev. Zool. p. 357, 1839. Deshayes, 



Guerin's Mag. Zool. t. 17, 1840. Chenu, 111. Conchyl. Pholas, t. 3, 



f. 4. Sowerby, Monog. Pholas, Thes. Conch, ii. p. 497, 1. 106, f. 67, 68. 

 Parapholas concamerata, Chenu, Man. ii. f. 43, 44. Fischer, Journ. Conch. 



2d ser. iii. p. 52. H. and A. Adams, Genera, ii. p. 330. Gray, Ann. 



and Mag. N. H. 2d ser. viii. p. 383. 

 Pholas cucullata, Gray, Syn. Br. Mus. 1840. 

 Penitella Conradi, Valenciennes, Voy. Venus, atlas, t. 24, f. 1. Conrad, 



Journ. Acad. Nat. Sc. 2d ser. ii. p. 335. 

 Pholas Darioinii, Sowerby, Monog. Pholas, Thes. Conch, ii. p. 490, t. 107, f. 



76, 77. 

 Zirfoza? Darwinii, Gray, Ann. and Mag. Nat. Hist. 2d ser. viii. p. 385. 



