1910 .] 
NATURAL SCIENCES OF PHILADELPHIA. 
6S1 
A large amount of research and routine work has been done by 
members of the staff in connection with the study collections as 
outlined in the accompanying special reports. 
Beside this, Dr. J. P. Moore has cared for the collection of annelids 
and has studied and described the extensive collections dredged in 
the North Pacific by expeditions representing the U. S. Bureau of 
Fisheries, Leland Stanford University, and the University of California, 
from which the Academy receives duplicates. Numerous other 
specimens of worms submitted by institutions and individuals have 
been identified. 
Mr. H. W. Fowler has cared for the collection of fishes 
and, beside routine work, has critically studied and reidentified 
the batoid, chimseroid and ganoid fishes and part of the clupeoids, 
preparing seven papers for the Academy’s Proceedings. 
Mr. J. A. G. Rehn, in the portion of his time devoted to Entomology, 
has studied the North Carolina Orthoptera in the Academy collection 
and that of Mr. Morgan Hebard and prepared a paper on the subject 
for the Proceedings, as well as on the collection of Georgia and 
Florida Orthoptera submitted by the Georgia State Entomologist, 
from which the Academy received duplicates. He has likewise 
published a revision of the genus Ischnoptera. 
Miss H. N. Wardle has continued the cataloguing of the Archieologi- 
cal collection. 
The Curators are also indebted to Mr. E. T. Cresson, Jr., 
for aid in the entomological department, and to Messrs. S. S. Van Pelt 
and Bayard Long for voluntary work in mounting and caring for the 
local collection of plants. 
A number of important field trips were taken during the year in the 
interest of the Academy. Dr. H. A. Pilsbry spent several months in 
Arizona making collections of Mollusks, Reptiles and Plants. Mr. 
Vanatta spent some weeks in Bermuda, and Dr. Moore was at Martha’s 
Vineyard during the summer, both of them obtaining interesting 
invertebrate material, while Mr. Stewardson Brown, during a month’s 
sojourn in Jamaica, secured a valuable series of the plants of the island. 
Through the liberality of Mr. Morgan Hebard, Mr. Rehn was 
enabled to join him on another tour of the Western States in search 
of Orthoptera and a large collection was made in which the Academy 
shares. Numerous local collecting trips were also taken by members 
of the staff. 
Among the important accessions of the year may be mentioned the 
valuable unique specimens obtained by Mr. Clarence B. Moore during 
