23 



GENUS S P H JE N I A . TurtOH. 



467 Californica, Conrad, California, Jour. Ac.N. Sci., 7, pl.l7,f. 11. 



GENUS PETRICOLA. Lamarck. 



Delessert, pi. 4, f. 12. 

 Guer. Zool. Mag., 1840, pi. 20. 

 Gould's Invert. Mass., f. 41. 

 Gould's Invert. Mass., p. 53. 

 Reeve C. Syst, pi. 51, f. 5. 

 Wood's Ind., pi. 8, f. 72. 

 Chemn. 8, pi. 82, f. 734. 

 Sowb. Gen., f. 4. 

 Reeve C. Syst., pi. 51, f. 1. 

 Delessert, pi. 4, f. 14. 

 Delessert, pi. 4, f. 11. 



is Petricola Pholadiformis,Lam. 

 Petricola rupestris, Sowb. 

 Saxicava rugosa ? Lam. 

 Mytilus nivea, Gmel. 

 is Tellina fragilis, Linn. 

 Petricola fornicata, Say. 



Lamarck. 



Delessert, pi. 5, f. 3. 

 Delessert, pi. 5, f. 2. 

 Hanley Spec., pt. 1, p. 55. 

 Hanley Spec., pt. 1, p. 54. 



Guer. Zool. Mag., 1841, pi. 43. Saxidomus Nuttallii, Conrad. 

 Poli, pi. 19, f. 25, 26. Donax irus, Linn. 



Payr. Cat. Cor., pi. 10, f. 11, 12. 

 Delessert, pi. 5, f. 1. 

 Mont. T. Brit., pi. 3, f. 6. 

 Jay's Cat., 1839, pi. 1, f. 14, 15. 

 Guer. Mag. Zool., 1841, pi. 39. 





488 Nuttallii, 



489 " var., 



CLASS. T ROPIOPOD A. 



ORDER. BIMUSCULOSA. 



FAMILY NYMPHACEA. 

 GENUS s A N G UIN o L A R i A . Bruguidre. 



Conrad, California, Jour. Ac. N. Sci., 7, pi. 17, f. 0. 



Wood's Supp., pi. 12, f. 56. 





