56 PROCEEDINGS OF THE CALIFORNIA 



Regular Meeting, August 17th, 1863. 

 Dr. Trask in the Chair. 



Present, eleven members. 



Donations to the Cabinet : 



Three boxes of ores from various localities, presented by Dr. 

 Trask. Mr. Lorquin presented a number of land shells collected 

 on the Phillippine Islands by Mr. Lorquin, senior. A box of 

 shells from the Smithsonian Institution. 



Donations to the Library : 



Verslagen en Mededeelingen der Koninklijke AkademievanWetenschappen ; 

 Afdeeling Naturkunde, Parts 10-14, 1860-1862; Same, Afdeeling Letter- 

 kunde, Parts 5-6, 1860-1862 ; Jaarboek van de Koninklijke Akademie van 

 Wetensckappen te Amsterdam, 1859, 1860, 1861 ; Proceedings of the Royal 

 Horticultural Society, Yol. iii, Nos. 1-4, Jan. to April, 1863 ; Nachrickten 

 von der Georg-Augusts Universitat und der Konigl. Gesells. der Wissenschaften 

 zu Gottingen, 1862, Nr. 1-27. 



The above were received through the Smithsonian Institution. 

 Dr. Cooper read the following paper : 



On New or Rare Mollusca Inhabiting the Coast of California.— 



No. II. 



BY J. G. COOPER, M.D. 



The following species were collected while exploring for the State Geological 

 Survey, along the main land and islands bordering Santa Barbara channel, in 

 May, June, and July last. Besides those described as new, I obtained addi- 

 tional specimens of some of those described in 1862, confirming the specific 

 characters then given, and to some extent establishing the generic more accu- 

 rately. 



Careful notes and drawings from living specimens furnish the basis of most 

 of the descriptions, together with examination of the specimens in alcohol. 



With regard to localities, it must be noticed that "Santa Barbara" and 

 " Santa Barbara Island " are very distinct both in local characteristics and the 

 groups of animals inhabiting them. The island is about seventy-five miles from 

 the town, and thirty-five from the nearest main land. Catalina Island is twen- 

 ty-four miles from the main land, and very different in its molluscous animals 

 from both the main land and the other islands, being the richest locality on our 

 shores. 



I have not been able to compare these species with those from South Amer- 

 ica described by D'Orbigny and others ; but, like our other littoral mollusca, 

 they are probably distinct. I have, however, found the pelagic species Omnia- 



