REPORT OF NATIONAL, MUSEUM, 1923. 71 



Washington. Doctor Kose has also continued his studies of Ecua- 

 dorean plants, and has undertaken the account of the family 

 Caesalpiniaceae for the North American flora. Dr. William R. 

 Maxon, Associate Curator, has been engaged in work upon the 

 pteridophyta, especially those of tropical America, and has given 

 special attention to several important collections from the West 

 Indies and South America, as well as others from the Pacific Islands. 

 He has published several papers containing accounts of special groups 

 and descriptions of new species from various parts of the world. Paul 

 C. Standley, associate curator, has made some progress in the prepa- 

 ration of a synoptical account of the plants of Central America and 

 Panama, and has undertaken the compilation of a separate descrip- 

 tive flora of the Panama Canal Zone. Most of his work with Central 

 American plants has concerned the identification of the collections 

 which he obtained in 1922 in Salvador and Guatemala. The identifi- 

 cation of this collection has now been completed, and there has been 

 prepared a list of the plants of Salvador, which it is expected will be 

 published in that country. The flora of Alaska and the account of 

 the plants of Glacier National Park, mentioned in previous reports 

 as having been completed, have not as yet been published. Emery C. 

 Leonard, aid, has nearly completed his study of the genus Scutellaria^ 

 and has continued work upon the collections obtained by Dr. W. L. 

 Abbott in the Dominican Republic. Ellsworth P. Killip, aid, has 

 made further studies of the genus Passiflora, and has also been 

 engaged with the determination of several extensive collections of 

 South American plants, particularly those obtained by himself and 

 Dr. F. W. Pennell in Colombia. 



Dr. C. Hart Merriam, associate in zoology, continued his studies on 

 North American bears and other mammals. N. HoUister com- 

 pleted the last part of his report on the East African mammals in 

 the United States National Museum, Bulletin 99, embracing the 

 artiodactyls. He also started a comprehensive study of the mam- 

 mals recently received by the museum from southern China. Dr. 

 O. P. Hay, of the Carnegie Institution, has made constant use of the 

 collections in connection with his work on the Pleistocene fauna of 

 North America. Many of the researches of the members of the 

 Biological Survey are so connected with the Museum material that 

 no line can be drawn as to who is most benefited. Dr. Alexander 

 Wetmore worked more or less constantly upon the collections deter- 

 mining South American material collected by him. He also made 

 extensive use of the skeleton series in studies of fossil birds and in a 

 review of family and generic relationships in certain groups. Dr. 

 H. C. Oberholser made constant use of the facilities of the division of 

 birds both in connection with his North American studies, and espe- 



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