88 REPORT OF NATIONAL MUSEUM, 1&22. 



stratigraphy, both of which works are now in press by the Maryland 

 Geological Survey. Mention should be made here of the cooperative 

 work with the surveys of both Maryland and Tennessee, each of these 

 institutions bearing the expense of collecting material which comes 

 to the Museum, as well as publishing the results of field work and 

 study. Doctor Bassler has now in preparation a volume on the 

 stratigraphy of a portion of the Central Basin of Tennessee; has 

 prepared an article descriptive of Carboniferous Bryozoa from Bo- 

 livia; and in addition prepared for the Smithsonian Annual Report 

 a popular account of the 'Bryozoa and moss animals. In collabora- 

 tion with Ferdinand ('anu researches on the post-Paleozoic Bryozoa 

 in the collections have been continued and the results of the year's 

 work submitted for publication. 



Dr. W. H. Dall has been chiefly engaged in working up the marine 

 mollusk fauna of the Hawaiian Islands, both recent and fossil; Dr. 

 T. W. Vaughan and his associates have continued determinative and 

 descriptive work on collections from Mexico, the West Indies, Cen- 

 tral America, northern South America, and the Fiji Islands; Dr. T. 

 W. Stanton has pursued his studies of the faunas of the Cretaceous 

 formations ; and Dr. Mary J, Eathbun has studied the Tertiary deca- 

 pod crustaceans collected in Mexico by Doctor Vaughan and pre- 

 pared a report on the same, which will be incorporated in his report 

 of the results of his work in Mexico. Doctor Rathbun has also 

 identified the crabs recently collected in the Cretaceous of South 

 Dakota and Wyoming. 



Dr. F. H. Knowlton has worked continuously on the fossil plant 

 collections throughout the year and has completed three papers on 

 the flora of the Green River, of the Animas formation, and of the 

 lake beds of south central Colorado. He has now undertaken a 

 study of the Museum's series of Fort Union forms, a work which 

 will be of great benefit in classifying these numerous specimens and 

 eliminating the duplicates. 



Papers based wholly or in part on the paleontological collections 

 of Cretaceous age have been prepared or published by Drs. J. B. 

 Reeside, jr., and L. W. Stephenson, of the United States Geological 

 Survey. Remington Kellogg and Alex Wetmore, of the Biological 

 Survey, have studied and described vertebrate materials, the former 

 the cetaceans and the latter the fossil birds. 



Dr. J. W. Gidley has completed his work on the Primates of the 

 Fort Union; has prepared a preliminary report on the fossil verte- 

 brates from the San Pedro Valley, Ariz., with descriptions of 16 

 new species of rodents, and has continued his study of the Cumber- 

 land Cave fauna. 



Mr. C. W. Gilmore completed his article descriptive of an extinct 

 Varanid lizard from Wyoming, noted in last year's report as well 



