OF CONCHOLOGY. 93 



DESCRIPTIONS OF SIXTY NEW FORMS OF MOLLUSKS 

 FROM THE WEST COAST OF NORTH AMERICA AND 

 THE NORTH PACIFIC OCEAN, WITH NOTES ON OTHERS 

 ALREADY DESCRIBED. 



BY W. H. DALL. 



The shells described in this paper are from many different 

 sources, of which two deserve special mention. 



While acting as Chief of the Scientific Corps of the Western 

 Union Telegraph Expedition, in 1865-6, I obtained leave of 

 absence for three weeks, and proceeded to the town of Monte- 

 rey, some ninety miles south of San Francisco, on the coast of 

 California. This was in the month of January. During my 

 stay, I devoted my entire time to the examination of the Mol- 

 lusk fauna of that locality, which is very rich and varied. The 

 results of much arduous labor (I was unable to dredge), in which 

 I was most kindly seconded by Dr. C. A. Canfield, of Monterey, 

 may be found briefly summed up in the Proceedings of the Cali- 

 fornia Academy of Sciences.* I prepared at that time a faunal 

 catalogue of the shells of Monterey, with notes on habitats, and 

 on such species as appeared to be undescribed. Copies of this 

 MS. were sent to Dr. J. G. Cooper, R. E. C. Stearns, Esq., the 

 late Dr. A. A. Gould, Dr. P. P. Carpenter, Dr. Wm. Stimpson, 

 and Mr. Geo. W. Tryon, Jr., for examination and corrections 

 or suggestions, in March, 1866. 



Being called away by duties which took me to the confines of 

 the Arctic Circle, I thought it best, in view of the fact that we 

 Avere almost entirely without books or typically named shells in 

 California, to defer the publication of this paper until my return, 

 Meanwhile, the types of my collections were sent to Dr. P. P. 

 Carpenter, of Montreal, the most eminent authority on the Mol- 

 lusks of the West Coast of America, for his examination. Sub- 

 sequent study has shown the wisdom of this course, several of 

 the species having been incorrectly determined for want of types. 



*Vol. iii, p. 271, 1866. 



