42 REPORT OF NATIONAL MUSEUM, 1905. 



ing several groups of insects have been sent for study to a number of 

 persons, including Sir George Hampson, of the British Museum, 

 London; Mr. W. D. Kearfott, and Prof. Raymond Osburn, of New 

 York City; Mr. Charles Schaeffer, of the Museum of the Brooklyn 

 Institute; Mr. J. F. McClendon, of the University of Pennsylvania; 

 Prof. A. D. MacGillivray, of Cornell University; Mr. W. A. Hooker, 

 of Amherst, Massachusetts; Mr. Frederick Blanchard, of Tyngsboro, 

 Massachusetts; Mr. E. C. Van Duzee, of Buffalo, New York, and 

 Prof. H. C. Fall, of Pasadena, California. 



The revision of the land and fresh-water shells of North America 

 north of latitude 49°, by Dr. W. H. Dall, curator of mollusks, men- 

 tioned in the last report, was completed and in type at the close of 

 the year, forming a paper of about 200 pages with two plates in 

 the series of the Harriman Alaska Expedition. Among other papers 

 finished by the same author were a review of the classification of the 

 American Cyclostomatidfe, printed in the Proceedings of the Mala- 

 cological Society of London, and reports on land and fresh-water 

 shells collected in the Bahamas by Mr. Owen Bryant and on land 

 shells obtained in central Mexico by Dr. Edward Palmer, printed 

 in the Quarterly Issue of the Smithsonian Miscellaneous Collections. 



Work stated by Dr. Dall to be nearing completion includes the 

 extensive report on the Pyramidellidae, begun some time ago, in 

 joint authorship with Dr. Paul Bartsch; a paper on certain exotic 

 Pyramidellidse lent by the Zoological Museum at Berhn, Germany, 

 and reports on the mollusca collected by the Bureau of Fisheries 

 steamer Albatross at the Hawaiian Islands and on the voyage of 

 1905 to the southern Pacific Ocean under the direction of Dr. Alex- 

 ander Agassiz. The total number of papers on recent mollusks 

 published during the year by Dr. Dall was 12 and by Doctor Bartsch 

 4. Mr. Ralph Arnold has continued his studies on the Pectinidae. 

 In June, 1905, Doctor Bartsch visited Detroit, Michigan, and New 

 Philadelphia, Ohio, for the purpose of consulting the large collection 

 of Mr. Bryant Walker at the former place and that of Dr. V. Sterki 

 at the latter. Both of these gentlemen have offered to furnish speci- 

 mens for filling gaps in the Museum collection. 



The studies of Dr. James E. Benedict, assistant curator of marine 

 invertebrates, on the Anomuran crustaceans were interrupted by 

 his assignment to duties in connection with the Louisiana Purchase 

 and the Lewis and Clark expositions. Miss M. J. Rathbun, also 

 assistant curator, prepared for the Bureau of Fisheries a compre- 

 hensive report on the Brachyuran and JMacruran crustaceans of 

 Hawaii, containing descriptions of 80 new species, illustrated with 

 24 plates and 78 text figures, and a report on the specimens of the 

 same groups obtained during the Alaska salmon investigations of 

 1903. She continued her investi!,!;ations ou the fresh-water crabs 



