40 REPORT OF NATIONAL MUSEUM, 1910. 
of Arenicola glacialis Murdoch. Prof. William E. Ritter, of the 
University of California, spent some time at the Museum in the study 
of the Atlantic ascidians, in preparation for his monograph of the 
simple ascidians of the Pacific Ocean. Dr. E. A. Andrews, of Johns 
Hopkins University, examined the shrimps of the family Eryonide, 
the anatomy of which he is investigating. 
Over 315 lots of specimens of marine invertebrates were sent to 11 
naturalists for study and examination, besides 1,100 microscopic 
slides of foraminifera forwarded to Dr. J. A. Cushman. The prin- 
cipal sendings were of Ostracoda and Cladocera, to Mr. R. W. Sharpe, 
of Brooklyn, New York, who will report upon them to the Museum; 
of amphipod crustaceans, to Dr. A. S. Pearse, of the University of 
Michigan; of amphipods of the Connecticut coast, to Dr. B. W. 
Kunkel, of the Sheffield Scientific School, who requested them for use 
in a report for the State authorities; and of simple ascidians, to 
Dr. W. E. Ritter. 
With reference to the section of helminthological collections, it is 
reported that Dr. B. H. Ransom completed a study of all known 
species of nematode worms, about 50 in number, which are parasitic 
in the alimentary canal of cattle, sheep, and other ruminants, based 
chiefly on the material in the Bureau of Animal Industry collection. 
Several of the species were found to be new. Mr. M. C. Hall, also 
of the Bureau of Animal Industry, gave some attention to a new 
species of tapeworm which infests the dog. Mr. Howard Crawley, 
of the same bureau, described a species of Trypanosome common in 
American cattle. Investigations by Dr. Charles Wardell Stiles related 
mainly to the prevention of typhoid fever, and the hookworm and 
allied diseases. Dr. Joseph Goldberger, of the Hygienic Laboratory, 
studied a number of flukes, or distomatous worms, from various 
sources, among which he discovered some new species. A few loans 
of parasitic worms were made, and some specimens from the collec- 
tion were used for class demonstration at the Naval Medical School 
and Georgetown University. 
Plants ——The number of plants added to the National Herbarium 
was 33,477, received in 374 accessions. Especially noteworthy were 
several thousand specimens from the Smithsonian African Expe- 
dition, mainly collected and prepared by or under the direct super- 
vision of Dr. E. A. Mearns. The transfers from the Department of 
Agriculture amounted to 3,371 specimens, furnished by the Bureau 
of Plant Industry, the Biological Survey, the Forest Service, and 
the Bureau of Entomology. Through the medium of exchange 
over 8,000 specimens were received, the largest contributor in this 
connection being the Bureau of Science at Manila (to the extent of 
5,670 plants), followed by the New York Botanical Garden, the 
Field Museum of Natural History, and the K. K. Naturhistorisches 
