0\ MOLLUSCA OF THE WEST COAST OP NOBTH AMERICA. 611 



compiled from Dr. Cooper's letters received at different times, -without oppor- 

 tunity for his revision. Should errors, however, have escaped detection, they 

 will, no 5ouht, be corrected, and omissions supplied, in the forthcoming Ee- 

 ports of the Survey. The species either new to science, or now first found in 

 the CaUfornian branch of the fauna, are as foUows : — 



1. Defranda intricata. S. Diego, on PhasianeUa compia, &c. Maz. Cat., no. 13. 



2. Terebraiula unguicidus. Monterey to S. Diego : young shells ui 6-20 fm. : 



not rare. 



3. Terebratella ? caurina. Catalina Is., 80 fin. ; living; rare. 



4. Waldheimia Grayi. Catalina Is., 120 fin. 



5. Zirphcea erispata. Fragments fiom S. Diego appear (very imexpectedly) to 



belong to this northern species. 



6. Corhula luteola, n.s. S. Pedro — S. Diego ; common near shore. 



7. Neaa-a pectinata. Santa Barb., Oat. Is., 40-60 fm. (Puget Sd., Kennerley). 



8. Kennerlia bicarinata, n.s. Cat. Is., 40-60 fm. ; rare. 



9. Entodesma inflata, Com\, = diaphana, Cpr. Near S. Diego ; 1 valve {Palmer), 



10. Plectodon scabei; n.g. and n.s. Cat. Is. ; 2 similar valves, 40-60 fm. 



11. Macoma inquinata. S. Francisco ; rare. 



12. Macoma yoldiformis. S. Diego. (Puget Sound, Kennerley.) 



13. Macoma indentata, n.s. S. Diego. 



14. Angidus variegatm, n.3. Mont., Cat. Is., 20-60 fin. ; rare. (Neeah Bay, Swan.) 



15. Arcopagia lamellata. S.Diego. = Maz. Cat., no. 58. 



16. CEdalia {Coopereila) scmtilleeformis, n. subg., n.s. S. Diego. Santa Barbara Is. 



17. Semele rupium. Catalina la. ; not rare. (Also Galapagos.) 



18. Semele pidchra. S. Diego. (Also Cape St. Lucas, Acapulco.) 



19. Semele incongrua, n.s. Oatalma Is., 40-60 fm. ; common. 



20. Psephis salmonea, n.s. S. Diego, Cat. Is., 30-40 fin. ; rare. 



21. Psephis Lordt. Cat. Is., 20-40 fm. ; common. (Puget Sound, Kennerley.) 



22. ?Astarte Jluctuata, n.s. Cat. Is. ; 2 similar valves ; 40 fm. (Very like the Cra^ 



fossil, A. omaria, iun. ; but Dr. Cooper considers it a Crassatella.) 



23. Venericardia borealis. Cat. Is., 120 fm. The typical, flat New England form. 



The small swollen var.,= V. ventricosa, Gld., is also found at Cat. Is., in 

 30-40 fin. 



24. Miodcm prnlongatvs. (Neeah Bay, Sivan^^ Identified from tracing only. 



25. Trapezium. One extremely young sp.= Maz. Cat., no. 120 (not lilce T. -Dm- 



perryi). S. Diego. 



26. Chama ?spinosa, S. Diego. (One young valve sent.) 



27. Cardium (fmodestum, var.) centifilosum. Cat. Is., 30-40 fm. [The differences 



between this and the Eastern Pacific shell are probably only varietal.] 



28. Hemicardium hiangulatum. Cat. Is., living ia 10-20 fm. (Also Acapulco, 



Panama.) 



29. Liocardium elatum. S. Diego ; very large (Maz. Cat., no. 124). 



30. Ludna tenuisculpta. S. Diego, living in 4fm. (Also Puget Sound, Kennerley.) 



Var., dead in 120 fm., Cat. Is. (approaching X. Mazatlanica, Maz. Cat., 

 no. 144). 



31. Lucina borealis. Cat. Island, 120 fm. " =Z. acutelirata, Com., foss. E. E." 



[Exactly agrees with British examples.] 



32. Cryptodonflexuosus. Cat. Is., 120 fin. Ditto. 



33. Kellia suborUctdaris. S. Diego ; Cat. Is., 30-40 fm. Ditto. 



34. Kellia (var.) Ckironii. S. Diego. (Also Neeah Bay, Sioan.) 



35. Lasea rubra. Cat. Is., shore (typical). 



36. Lepton meroeum, n.s. S. Diego. 



37. TeUimya tumida. S. Diego. (Also Puget Sound, Kennerley.) 



38. Pristes oblongus, n.g., n.s. S. Diego. 



39. Crenella decussata. Cat. Is., 10-40 fm. ; not rare. (The ordinary British, not 



the New England form.) 



40. Barbatia gradata. S. Diego ; Maz. Cat., no. 194. 



i'L. Axineea intermedia. Monterey — S. Diego, Cat. Is., 40-60 fm. [Scarcely differs 

 from the South American shelL It is the A. Barbarcnsis, Conr., of Pac. li. 

 B. fossils, teste Cooper.] 

 7 97 



