Rep07-t of the President. 1 9 



respectively, at the north and south ends of the palaeontological 

 hall. 



Department of Vertebrate Zoology. — I regret to note 

 that the increase in the number of specimens in this deparment is 

 not equal to that of former years. 



Owing to the changes made in the transept of the west wing by 

 the construction of stairways, the mammals formerly displayed 

 there have been removed, temporarily, and cannot be permanently 

 installed until the addition to the east wing, now under construc- 

 tion, is completed. New space has been provided, however, for 

 the installation of the local and other special collections of birds 

 and mammals, which will be especially instructive to students of 

 our local fauna and useful to the teachers and pupils of our public 

 schools. The cases are now ready and the installation will soon 

 be completed. 



During the coming year a number of large mammals will be 

 mounted for the North American collection, and others for the 

 general collection of mammals, from the material now on the way 

 from South America and Central America. Several hundred 

 birds will also be mounted for the local and other special 

 collections. 



During the year Mr. Frederick M. Holbrook has kindly identi- 

 fied and catalogued the turtles ; the fishes received from the New 

 York Aquarium have been identified and catalogued by Dr. 

 Tarleton H. Bean. 



Department of Entomology. — The Hoffman Collection of 

 North American Butterflies has been arranged, labeled, and 

 placed on exhibition. About 1200 specimens of the Hoffman 

 Collection of butterflies from Mexico, Central and South America 

 have been mounted on tablets, and two cases have been filled 

 with the material ready for exhibition. 



Two cases containing silk-producing moths, with their cocoons, 

 have been added to the exhibition collection, together with a very 

 interesting exhibit showing the mimicry of insects. 



Some field work has been carried on during the vacation season, 

 through which a large amount of material has been added to the 

 local collection representing the varieties of insects found within a 

 radius of fifty miles from New York City. This collection will be 

 made as complete as possible by the addition of the material illus- 



