68 REPORT OP NATIONAL MUSEUM, 1924 



cultural and Mechanical College, spent three months in the Museum 

 during the summer of 1923, studying Tachinid flies. George M. 

 Greene, Bureau of Plant Industry, Harrisburg, Pa., interested in 

 Coleoptera, spent several days on two occasions looking up literature 

 in the library of the division. W. A. Hoffman, of the Johns Hopkins 

 University, made three visits of several days each, with the object of 

 studying bloodsucking midges. E. R. Buckle, entomological branch, 

 Department of Agriculture, Ottawa, Canada, studied Orthoptera; 

 Dr. William Barnes, Decatur, 111., and Dr. W. J. Holland, Pitts- 

 burgh, Pa., examined Lepidoptera. The division of marine inver- 

 tebrates, as usual, has furnished material assistance to members of 

 the scientific staff of the Biological Survey in the identification of 

 invertebrate remains found in bird stomachs: to the Bureau of Fish- 

 eries in the determination and furnishing of information relative to 

 marine and aquatic invertebrates; to the zoological division of the 

 Bureau of Animal Industry in the classifying of invertebrate hosts 

 of animal parasites ; and to the Federal Horticultural Board in iden- 

 tifying invertebrates found associated with various plant importa- 

 tions. In the division of mollusks Dr. C. W. Cooke, Dr. W. P. Wood- 

 ring, Dr. Julia A. Gardner, and W. C. Mansfield, all connected with 

 the United States Geological Survey engaged in investigations on 

 the Tertiary fossils, required frequent reference to the recent collec- 

 tions, as it is largely through the recent shells that the fossils are 

 interpreted. William F. Clapp, Cambridge, Mass., spent a day in 

 the division with the shipworm collection, and Prof. Ernest C. 

 Faust, Johns Hopkins University, another day looking over mollusks 

 that act as intermediate hosts for human parasites. Calvin C. Good- 

 rich, Toledo, Ohio, spent a day looking over Isaac Lea types of fresh- 

 water mollusks, and so did Mrs. John F. Hicks, Captiva, Fla., study- 

 ing Florida shells. Prof. W. D. Reed, Clemson College, S. O, spent 

 several hours seeking advice on collecting mollusks for certain chemi- 

 cal investigations; Dr. Carlos de la Torre, president of the Univer- 

 sity of Habana, worked in the division during the past summer, 

 devoting especial attention to the study of our collection of West 

 Indian Cerions; and Miss Mary Quick, a student of George Wash- 

 ington University, spent several hours each week throughout the 

 year making a comparative study of the anatomy of various species 

 of Cerion. These studies will be used by Doctor Bartsch in his 

 report upon the family. The work in question was financed by the 

 Marine Biological Laboratory of the Carnegie Institution. 



Dr. C. Wardell Stiles and Miss Marguerite Woodward of the 

 United States Public Health Service spent several weeks in the 

 division, seeking the correct names of molluscan hosts of various 



