64 EEPORT OP NATIONAL MUSEUM, 1925 



particular attention to the fern flora of Porto Rico. He published 

 several short papers and a longer popular article upon the study 

 and cultivation of ferns. Paul C. Standley, associate curator, com- 

 pleted manuscript of the fifth and concluding part of the trees and 

 shrubs of Mexico, and has nearly completed a semipopular account 

 of the flowering plants of the Panama Canal Zone. He published 

 descriptions of a considerable number of new flowering plants from 

 Central America, in addition to a popular article on the Republic 

 of Salvador and, in collaboration with Dr. Salvador Calderon, of 

 San Salvador, an annotated list of the plants of the Republic of 

 Salvador. Emery C. Leonard, aid, continued studies of West Indian 

 plants, and has undertaken also a revision of the tropical American 

 species of the family Acanthaceae. Ellsworth P. Killip, aid, con- 

 tinued studies of the genus Passiflora and the family Urticaceae, 

 particularly as represented in South America, and published a paper 

 on a South American collection of the latter. 



A large number of scientists and students, mostly from outside 

 Washington, have pursued more or less extensive studies in various 

 divisions to the mutual benefit of the investigators and the Museum. 

 As a rule, however, the greatest benefit acrues to the Museum when 

 unworked material is sent out to outside specialists. Thus the skull 

 of an unidentified porpoise was submitted to Dr. Glover M. Allen, 

 of the Museum of Comparative Zoology, and was identified hj him 

 as a species hitherto not recorded from the United States. A pub- 

 lished note concerning this is noted in the bibliography. In the 

 division of birds Dr. James P. Chapin, American Museum of Na- 

 tural History, New York, in the course of studies here, revised the 

 names of certain African birds in the collection. Dr. H. C. Ober- 

 holser, of the Biological Survey identified various birds upon which 

 he had occasion to work during the year. The division of insects 

 has been greatly benefited hj outside studies of its material. Thus 

 H. W. Allen, of the Agricultural and Mechanical College of Missis- 

 sippi, has completed an extensive paper oii the subfamily Milto- 

 graimninae^ which is now awaiting publication in the Museum pro- 

 ceedings. William T. Davis of Staten Island, has during the year 

 identified several shipments of Cicadas, and Dr. Philip Garman, of 

 the Connecticut Experiment Station and Nathan Banks of the 

 Museum of Comparative Zoology, rendered assistance to Doctor 

 Ewing in the identification of mites and red spiders. Prof. T. D. A. 

 Cockerell of the University of Colorado, continued his cooperation. 

 S. E. Crumb, of the Bureau of Entomology, spent some time in re- 

 arranging noctuid larvae material in connection with his studies. 

 Dr. E. D. Ball, of the United States Department of Agriculture, 

 during frequent visits to the collections, assisted in the identification 



