OP CONCHOLOGY. 45 



proved by Nuttall having given " San Diego " for Arionta Cali- 

 forniensis, Lea, and is very probable in the cases of several, both 

 of his and Jewett's species, not found at the localities stated by 

 later collectors. 



Collections made in 1861. 



I visited Monterey from Aug. 12th to Sept. 25th, the worst 

 season of the year for beach collecting, as the perfect specimens 

 washed up by the storms of the previous winter had been nearly 

 all picked up by summer visitors, and the tides did not fall 

 enough to obtain the rare ones living near extreme low water. 



I therefore paid attention chiefly to dredging, though poorly fitted 

 out for it, having only a little boat 15 ft. long, scarcely large 

 enough for myself and two rowers to work in, and too small to 

 go far out in, or to work in after the sea breeze began to be 

 strong. We therefore had to work chiefly from 11 till 2 

 o'clock, and on many days could do little except along shore. 



The following extracts from my notes will serve to show the 

 general conditions under which the collections were made. I 

 must state, that having to attend to all branches of zoology, I 

 did not devote so much time to mollusca as I might otherwise 

 have done, yet collected more species in that branch than in all 

 others together, the Avhole number of species of animals obtained 

 being about 360, of which 197 were mollusca, excluding varieties. 



In Carpenter's report for 1863 only 90 are given as collected 

 by me at Monterey, being those of which I sent him duplicates 

 from there, though I might have sent many more had I 

 known that he intended making local lists. Having more or 

 better specimens of most of them from other points I did not 

 think necessary to send from each one, and reserved all unique 

 specimens from every locality. A larger series from each one 

 was lost while going to him in the "Golden Gate." Besides, 

 there seem to be several locality errors in his table of my speci- 

 mens, such being liable to occur in spite of every precaution. 



Carmel Bay, Aug. 13th, 1861. I visited this bay first, be- 

 cause it had seemed to Prof. Whitney better suited for collecting 

 at than Monterey. Its advantages are a very smooth surface in 

 summer towards the north end, sandstone rocks and small ex- 

 tent. Visited some rocky islets a quarter mile oft" shore, where 

 I found eleven of the common littoral species living, and five 

 others inhabited by crabs. Have to wait a week for my dredge 

 rope, accidently left at San Francisco. 



Aug. 14th. Found two more living and nine dead species 

 along shore. Can find only a rope twenty feet long to dredge 

 with and a little skiff" only fit for smooth water, but with these 

 obtained two more living species. 



