1875.] 



SENATE— No. 75. 



9 



By Exchange. 



Linden, Charles, 3 young birds and eggs, in alcohol, from San- 

 tarem, Brazil. 



SmTHSOxiAN Institution, 63 nests, 58 species, 117 eggs, 50 spe- 

 cies, of North American birds ; 4 skins of Leucosticte griseinucha, 

 from St. George's Island, Alaska. 



Vienna Museum, 1 mounted skeleton of Aquila. 



By Purchase. 



95 skins and 34 skulls, from Sweden. 



Report on the Department of Oonchology , hy John G. 



Anthony. 



My last report, which was made in January last, brought 

 the business of my department up to the close of last year, 

 and, consequently, leaves but the doings and changes of ten 

 months to note at the present time. 



Since then the usual outline has been observed. The 

 Pease collection of shells, which at the close of the year had 

 only just come into our possession, and had been but partially 

 examined, and the species identified, has since demanded and 

 received our almost undivided attention, and as we found it 

 absolutely necessary^ to couple with it the entire revision of 

 all our previous collection, has proved a long and most 

 laborious undertaking. We have endeavored to do this in 

 the most critical and thorough manner, sparing no pains to 

 make the revision as perfect as possible, and have the satisfac- 

 tion of believing that this has been so thoroughly done that 

 no further labor in this direction will be required for many 

 years. In all this work I have had the benefit of the valuable 

 cooperation of my assistant. Professor Hamlin, who has been 

 indefatigable in his efforts to aid me in every way possible. 



The mounting of specimens for the purpose of properly pre- 

 senting them to the view of visitors, and especially of students 

 of this branch of natural history, has been steadily carried 

 on during the year by my daughter, who is my only assistant 

 for that purpose, and much progress has been made in that 

 direction. And the large additions made to our collection 

 from the Pease collection, and those received by exchanges, 



2 



