310 PROCEEDINGS OF THE ACADEMY OF [DeC, 



Specimens have been loaned for study to Dr. Paul Bartsch, Mr. 

 J. B. Henderson and Dr. V. Sterki. 



Insects. 



Dr. Henry Skinner, head of the Entomological department, reports 

 that as usual a large amount of material has been incorporated in the 

 collections during the year but lack of cases has seriously retarded 

 its arrangement. He has, however, completed the rearrangement 

 of the large group of the exotic Hesperidse. 



Notable additions to the collection have been 75 diptera from the 

 western United States and Alaska from F. M. Jones; some rare East 

 Indian and South American lepidoptera from W. J. Coxey; 356 lepi- 

 doptera from Panama and Costa Rica, from D. E. Harrower; a 

 gynandromorphic Papilio turnus from G. F. Pettinos, Jr.; a collec- 

 tion from the Chiricahua Mountains, Arizona, froni Dr. W. Stone, 

 consisting of about 4000 specimens; a large series of orthoptera and 

 many coleoptera etc., from Morgan Hebard. 



Mr. E. T. Cresson, Jr., has prepared a revision of the dipterous 

 family, Sciomyzidse, which is now in press, while the family An- 

 thomyidse has been studied by J. R. Malloch, Many new species 

 of diptera have been received in return for identification of material 

 sent by other institutions. 



In orthoptera, Mr. J. A. G. Rehn has rearranged several groups 

 so as to admit of the incorporation of newly received or determined 

 material and has mounted and labelled many specimens. His studies 

 during the year have covered the West Indian Blattidae, African 

 BlattidsB and a revision of the North American Trimerotropi. 



Mr. Morgan Hebard, who has continued his researches at the 

 Academy during the year, has completed a study of the Colombian 

 dermaptera and orthoptera and also a monograph of the Blattidae 

 of Panama, and a report on Mantidse from Malaysia^ Papua and Aus- 

 tralia. 



Numerous entomologists have studied the collections and specimens 

 were borrowed for study by Chas. Schaeffer and Edw. C. Van Dyke. 



Plants. 



The transfer of the herbarium to new quarters at the east end of 

 the north wing, has already been mentioned. Mr. Stewardson Brown, 

 in charge of this department, reports that the general series of plants 

 has been arranged in the three lower rooms, the local collection in the 

 middle room on the upper floor and the cryptogams in the south 



