1910.] NATURAL SCIENCES OF PHILADELPHIA. 681 



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 Archaeologi- 

 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 



