22 
REPORT ON THE ENTOMOLOGICAL DEPARTMENT. 
By Dr. H. A. HaGen. 
THE most important addition to the collection was the gener- 
ous present of the collection of North American Insects brought 
together by Mr. J. H. Treat and his brother, Mr. J. O. Treat, in 
Lawrence, Mass. By far the largest part, the Lepidoptera, were 
in beautiful condition, many of them raised, and contained a 
number of types from Mr. Grote and Mr. Sanborn. Among the 
species of the other orders some were very valuable : —a number 
of Mexican Diptera by the Baron Osten-Sacken, named by him ; 
an Ascalaphus from Jamaica Plains, the first known to have been 
found near Boston, by Mr. J. G. Jack; a large lot of Neuroptera 
and Pseudoneuroptera, some Odonata nymphe skins of promi- 
nent interest, by Mr. H. Edward, New York; some Odonata 
from Florida, by Mr. Beutenmiiller, New York; a lot of Lepi- 
doptera from Sikkim, India, by Mr. Elwes, London, Eng. ; a white 
ants’ nest from Paramaribo, Surinam, by Mr. H. Sawyer, United 
States Consul, through Mr. Babcok; Neuroptera collected in 
New Hampshire, by Mr. L. Cabot; biological specimens and a 
copy of the Standard Zodlogy, by Mr. S. Henshaw; biological 
specimens of plants infested, by Mr. Seymour; additions to Le 
Conte’s collection, by Dr. G. H. Horn; a splendid set of West 
African Termitina, by Mr. V. Fric, Prag, Bohemia; from the 
same were bought specimens of Glossina morsitans, the famous 
Tsetset Fly, new to the Museum. 
The Library has received a number of additions. A very 
careful revision and new arrangement of the Library has just 
been completed. Nine volumes of the original drawings by 
T. Glover were bought. 
Mr. F. Woodworth, a special student here, has arranged and 
determined the Homoptera of the collection. A part of his 
studies is published in ‘‘ Psyche.” Mr. J.G. Jack has continued 
