REPORT OF NATIONAL, MUSEUM, 1921, 73 



Dr. E. R. Dunn, of the Museum of Comparative Zoology, identified 

 various rejDtiles and batrachians during his visits to the Museum. 

 Dr. O. P. Ha}^ and Mr. C. W. Gilmore have examined reptilian 

 material from time to time. Mr. Remington Kellogg, of the Bio- 

 logical Survey, has spent considerable time in the division of reptiles 

 identifying and studying the entire collection of American toads of 

 the genus Bufo with a view to preparing a monograph. 



Mr. "Walter Koelz's studies of the whitefishes in the division of 

 fishes, mentioned in last year's report, were concluded during the 

 present year. Similarly Mr, Carl L. Hubbs, of the University of 

 Michigan, studied the lancelets and lampreys of the collection in 

 connection with a forthcoming review of these groups. Dr. Henry 

 W, Fowler, Philadelphia Academy of Natural Sciences, has greatly 

 aided in the ichthj^ological work of the Museum. 



It is quite natural that when specialists visit the Museum to 

 examine the collections in connection with the working up or mono- 

 graphing larger groups in their home museums or own private col- 

 lections, a considerable amount of original identification or correc- 

 tion of current identifications of our own specimens must result. In 

 this way the National Museum benefits directly by the visits of 

 scientific workers from other institutions. Again, with the lack in 

 Washington of specialists in many groups, the Museum is entirely 

 dependent upon the generous assistance of many outsiders for proper 

 identification of specimens sent to it. For these favors grateful 

 acknowledgments are due. The division of insects has been par- 

 ticularly fortunate in this respect during the present year. Thus 

 Dr. E. P. Felt, State entomologist of New York, has recently re- 

 turned a large collection of the dipterous gall-miclges (Cecido- 

 mjddae) which were sent him several years ago. He has mounted 

 our material on microscopic slides, the only possible permanent 

 method for these very delicate and tiny flies; most of our material 

 is now returned as types of new species, and he has added a large 

 amount of his own type material, making our collection in the family 

 probably second only to that of the New York State Museum in the 

 world. As usual, Prof. T. D. A. Cockerell, of the University of 

 Colorado, has aided greatly with the bees, while Mr. Nathan Banks 

 and Dr. P. V. Chamberlin, both of the Museum of Comparative 

 Zoology, have identified spiders and myriopods, respectively. So 

 much work of a similar nature has been done by the various mem- 

 bers of staff of the Bureau of Entomology in connection with their 

 other studies that it would be impractical to acknowledge the 

 assistance separatel}?^ and individually. 



What is true of the division of insects with regard to dependence 

 on the aid of specialists residing outside of Washington for aid in 

 identifying and classifying material due to insufficiency of the 



