22 



COMPARATIVE ZO-OLOGY. [June, 



which this report refers. This may seem but a small addition 

 as compared with former years, but I hope to be able to 

 chronicle a much larger increase next year, when the many 

 packages brought or sent home by the Hassler Expedition 

 shnll have been opened and distributed. 



The number of packages sent away during the same time 

 from my department has been 17, and they contained 1,555 

 species and 7,104 specimens. Small as these figures may 

 seem they leave us very nearly free from obligations on ac- 

 count of our exchanges. 



My young lady assistants were engaged at the commence- 

 ment of the year in cleaning and mounting specimens for 

 exhibition, but more recently I have directed them to select 

 and separate the duplicate shells of every description, belong- 

 ing to the Museum, so as to render them more available in 

 our exchanges, and for the preparation of special collections 

 for our high and normal schools. 



This work when accomplished will afford great facilities and 

 economize much time. 



Beport on the Articulates, by Dr. H. A. Hagen. 

 The additions to the department in the year 1872 are : — 



1. From Prof. Fr. Sanborn, two species of North American 

 Boreus. 



2. From Rev. M. M. Carleton, a ver}- large collection of butter- 

 flies and other insects, dry and in alcohol, from the Himalaya 

 Mountains, about 10,000 specimens. 



3. From Mr. J. A. Allen, insects and fresh-water Crustacea from 

 Nebraska. 



4. From Prof. L. Agassiz, butterflies, from St, Thomas, West 

 Indies. 



5. From Prof. Gerstaeker, in Berlin, a collection of 500 species 

 of Hymenoptera and Diptera, representing types of his published 

 monographs. — To be paid for. 



6. From Mr. Pike, U. S. Consul at Mauritius, a ver}' rich lot of 

 Crustacea, dr}^, from Mauritius ; and valuable insects dry and in 

 alcohol, from the same localit}'. 



7. From W. H. Edwards, in Coalburgh, W. Va., 80 species of 

 Lepidoptera from Colorado, types of his publications. 



