NORTH AMERICAN CONCHOLOGT. 



409 



31 Turritella acicula. 



31 Pyramis striatula. 



31 Odostomia exigua. 



31 Pleurotoma decussata. 



32 Cancellaria Couthouyi. 

 32 Fusus Islandicus. 



32 decemcostatus. 



32 Bamffius. 



32 rufus. 



32 harpularius. 



32 pygmaeus. 



32 Rostellaria occidentalis. 



32 Purpura lapillus. 



32 Trichotropis borealis. 



32 Buccinum plicosum. 



32 undatum. 



32 obsoletum. 



32 trivittatum, 



32 rosaceum. 



32 lunatum. 



32 Xylophaga cuneiformis. 



32 Helix hortensis. 



32 Turritella interrupta. 



Gould. — Catalogue of Shells collected in California by TV, P. 

 Blake, with descriptions of the new species; by Augustus A. 

 Gould, M. D. (From Appendix to the Preliminary Geological 

 Keportof William P. Blake, Geologist of the Survey in Cali- 

 fornia under the command of Lieut. R. S. Williamson. Wash- 

 ington, 1855.) 



[Though referred to House Document 129, I cannot find it in the Con- 

 gressional Reports. It seems to have been published separately in this 

 octavo form. It occurred subsequently in quarto, with plates, in the 

 Pacific Railroad Report, vol. v, q. v. — W. G. B.j 



No 



descriptions are given of the following: — 





Page. 



Name. 



Locality. 



22 



/^r(4-*.An 



San Diego. 







22 



Pecten latiauratus Conrad. 



San Diego. 



22 





San Diego. 





A COtdl • 



22 



Mytilus edulis. 



San Francisco. 



22 



Modiola capax Conrad. 



San Diego. 



22 



Venus Nuttallii Conrad. 



San Pedro. 



22 



fluctifraga Sowerhij. 



San Diego. 



22 



Tapes grata Say. 



T. discors Sowerby. 

 siraminpa Conrad. 



San Pedro. 



22 



gracilis Gould. 



San Pedro. 



22 



f^ 1 



Colorado Desert 



v^ycias . 



22 



Cardium cruentatum Gould. 



San Diego. 



22 



Lucina orbella Gould. 



San Pedro. 



22 



Nuttallii Conrad. 



San Pedro. 



22 



Mesodesma rubrotincta? Sowerby. 



San Pedro. 



