REPORT OF NATIONAL MUSEUM, 1919. S^ 



diplodons and anodontites. Mr. C. R. Shoemaker, aid, in what 

 little time could be spared from routine work, continued his studies 

 of the amphipods, completing his report on those collected by the 

 Canadian Arctic expedition, as well as a report on the amphipods of 

 the American Museum Congo expedition, 1910-1916. Miss Pearl 

 L. Boone, aid, continued her studies of the isopods, which resulted 

 in the preparation of three papers for publication. Her report on 

 the isopods of the Canadian Arctic expedition is being expanded 

 into a report upon those crustaceans for the entire region. She has 

 also begun a comprehensive report on South American isopods. 



Dr. T. Wayland Vaughan, custodian of the Madreporarian corals, 

 has devoted the major portion of his time to war work under tha 

 Geological Survey. The little time remaining for research he has 

 devoted to consideration of fossil material in connection with which 

 he had consulted the recent coral collections of the United States 

 National Museum. Asst. Surg. Gen. Charles Wardell Stiles, cus- 

 todian of the Helminthological collections ; Dr. B. H. Ransom, assist- 

 ant custodian; and Dr. P. E. Garrison, United States Navy, have 

 continued their investigations on the parasites of man and other 

 animals. Mr. Harry K. Harring, custodian of Rotatoria, has con- 

 tinued his studies of the rotifers of the District of Columbia, Wis- 

 consin, and other States. 



The facilities of the division have been extended to a number of 

 other specialists prosecuting investigations in our collections, as fol- 

 lows: Dr. Charles W. Cook, United States Geological Survey, has 

 consulted the recent mollusk collections in connection with his study 

 of the Eocene and Oligocene fauna, continued in the intervals of 

 field work for the United States Geological Survey. Mr. W. E. 

 Crane, of Washington, District of Columbia, has spent about six 

 months studying the various collections of mollusks, comparing and 

 identifying his own private collection thereby. He has liberally 

 donated several lots of rare shells from his private collection to fill 

 gaps in the collection of the Museum. Mr. Edwin Ashby, of Black- 

 wood, South Australia, studied the Australian chitonidae collections 

 in the United States National Museum during the month of July, 

 which, in addition to a revision of our collections, resulted in an ex- 

 change of valuable paratypes and other valuable Australian chitonidae 

 for North American specimens. Dr. Ralph V. Chamberlin, of the 

 Museum of Comparative Zoology, Cambridge, Massachusetts, spent 

 a couple of days examining the annelid collections, making a pre- 

 liminary examination of the Arctic marine annelids and the gen- 

 eral collection of sipunculid worms, both of which he has undertaken 

 to monograph, his reports to be published by the National Museum. 



