42 REPORT OF NATIONAL MUSEUM, 1904. 



examined the collection of mosquito larvae, and the Carnegie Institu- 

 tion has had the use of the specimens of Polisies, a genus of social or 

 paper-making wasps. The number of loans of specimens was large, 

 the principal being of Coleoptera to Dr. F. E. Blaisdell, San Francisco, 

 California; of Orthoptera to Mr. J. A. G. Rehn, of the Philadelphia 

 Academy of Sciences; of Rhynchota to Prof. P. R. Uhler, of Baltimore; 

 and of Diptera to Prof. James S. Hine, of the Ohio State University. 



Dr. James E. Benedict, assistant curator of marine invertebrates, 

 continued his studies on the anomouran crustaceans, two papers, a 

 revision of the genus Lepidopa, and descriptions of new albuneids, 

 being published during the year. Miss M. J. Rath bun, assistant cura- 

 tor, completed the monograph of the fresh-water crabs (Potamonida?) 

 on which she has been engaged for some time, and which is being 

 printed in the Archives of the Paris Museum of Natural History. 

 She also continued work on the crabs of Hawaii, preparing a paper on 

 this subject for the U. S. Bureau of Fisheries, and one on the decapod 

 crustaceans of the northwest coast of North America for the Harriman 

 Alaska expedition. Dr. Harriejt Richardson, collaborator in marine 

 invertebrates, also finished a report, published in the same series, on 

 the isopod crustaceans of the northwest coast, besides an account of the 

 isopods obtained on the Alaskan expedition of the Bureau of Fisheries 

 in 1903. She has since begun upon a manual of the North Ameri- 

 can Isopoda. Mr. T. Way land Vaughan, custodian of madreporarian 

 corals, has made notable progress in the study of that group as repre- 

 sented in the Museum, haying paid special attention to the collections 

 from the Hawaiian islands. Dr. C. W. Stiles, custodian of the 

 helminthological collections, completed his investigation of the hook- 

 worm disease in the Southern States, and began upon a study of 

 "spotted fever" in Montana. 



A number of specialists connected with other institutions are 

 engaged in working up several groups of marine invertebrates as fol- 

 lows: Prof. Charles L. Edwards, of Trinity College, Hartford, Connect- 

 icut, the pedate holothurians; Prof. Hubert Lyman Clark, of Olivet 

 College, Michigan, the apodal holothurians; Prof. C. C. Nutting, of the 

 University of Iowa, the hydroids, of which reports on the Plumulari- 

 dse and Sertularidae have been published; Dr. Charles B. Wilson, of 

 the State Normal School, Westfield, Massachusetts, the parasitic cope- 

 pods; Dr. K. W. Gent-he, of Trinity College, Hartford, Connecticut, 

 the free swimming copepods; Dr. R. W. Sharpe, of Wilmette, Illi- 

 nois, the Ostracoda; Dr. W. T. Caiman, of the British Museum of 

 Natural History, the cuniacea; Dr. H. Coutiere, Ecole Superieure de 

 Pharmacie, Paris, the Alpheidse. Besides material supplied to the 

 above, specimens from the collections made during the investigations 

 of 1903 by the Bureau of Fisheries into the Alaskan salmon fishery 

 and elsewhere have been sent out as follows: The parasitic copepods 



