26 
Annual Reports of Academy of 
completed a revision of the Sciomvzidae and rearranged certain 
other families, while he also made a study of the Loew types in 
the Museum of Comparative Zoology. One of the most important 
accessions of the year was the Harbeck collection of Diptera, pur¬ 
chased by the Academy, comprising 9,300 specimens and 1,579 
named species making the collection of North American flies very 
complete. Mr. Rehn and Mr. Hebard have devoted all of their 
time, except the summer months when they were in South America, 
to the study and arrangement of the Orthoptera. Mr. Hebard has 
added to his collection, on deposit at the Academy, the Hancock 
collection of Tettigidae, the most representative in the world. 
Mr. Rehn has completed a study of the Dermaptera of the Ameri¬ 
can Museum Congo Expedition; and a study of the Blattidae in 
the Transvaal Museum collection is nearly completed. From 
both, the Academy receives a representative series of duplicates. 
Mr. Hebard in the course of his studies has determined South 
American collections of Blattidae, etc., from the Paris Museum, 
and has continued his monograph of the North American Melanopli. 
Herbarium. 
The rearrangement of the Herbarium in the new room has pro¬ 
gressed, as far as cases are available, under the direction of Mr. 
Stewardson Brown, in charge of the Department, the remainder 
of the general series being accommodated in a room at the S. W. 
corner of the building, where duplicates and portions of the Porter 
collection are stored. 
The greater part of Mr. Brown’s time has been occupied in de¬ 
termining the Arizona Collection made last year by Dr. Witmer 
Stone, and in preparing for mounting a valuable collection of British 
Colombian and Alaskan plants presented by Mr. Adolph Muller. 
Portions of the Canadian material received by purchase early in 
the year have also been mounted, as well as other large accessions. 
Mr. Bayard Long has continued in charge of the local collections 
and has studied critically a number of groups, besides securing many 
additional specimens on collecting trips in local territory. There 
has now accumulated a large amount of such material which is 
awaiting mounting before it can be placed in the regular series. 
