48 REPORT OF NATIONAL MUSEUM, 1915. 



of Washington, who devoted several months to a biometric study of 

 the shells of Vivipara lan^wnis from the Philippines ; and Mr. F. M. 

 Anderson, of the California Academy of Sciences. 



The extent to which the collections of the division have been made 

 the basis of important researches by scientific men, not members of 

 the Museum staflf, both at home and abroad, is indicated by the cita- 

 tions in the bibliography at the end of this report. Among those who 

 in recent years have had extensive series of material sent to them 

 for elaboration are Prof. C. C. Nutting, Prof. A. E. Verrill, Dr. J. A. 

 Cushman, Dr. H. J. Hansen, Prof. C. B. Wilson, Dr. H. B. Bigelow 

 and Dr. H. A. Pilsbry. Some of these and others still have collec- 

 tions in their possession, on which reports are forthcoming. Addi- 

 tional material for study was sent during the year to Dr. J. A. 

 Cushman, of the Boston Society of Natural History, consisting of 

 Foraminifera from the North Pacific Ocean and New England; to 

 Dr. Max Ellis, of the University of Colorado, a large number of 

 discodrilid worms from crayfishes; to Prof. Frank Smith, of the 

 University of Illinois, a large number of earthworms from Cali- 

 fornia and Texas. Specimens were also supplied to Dr. H. A. 

 Pilsbry, of the Philadelphia Academy of Sciences ; Dr. H. J. Hansen, 

 of Gjentofte, Denmark; Dr. C. A. Kofoid, of the University of Cali- 

 fornia ; and Dr. Aaron L. Treadwell, of Vassar College. 



Insects. — The Bureau of Entomology of the Department of Agri- 

 culture furnished, as usual, the greatest number of specimens, which 

 were contained in several transfers and aggregated 7,329 specimens, 

 mostly Hymenoptera, Diptera and Odonata, besides over 900 vials 

 of miscellaneous insects in alcohol. Included in one of the accessions 

 were the types of 69 species of Hymenoptera. A gift of Peruvian 

 material from Dr. C. H. T. Townsend, forming an exceedingly valua- 

 ble acquisition, consists of 118 slides, 443 vials of reproductive sys- 

 tems and over 3,000 adult Diptera, with the types of four species. 

 The tendency among entomologists to deposit their type specimens 

 with the national collections, thereby providing for their permanent 

 preservation and making them more accessible to scientific workers 

 in general, is well exemplified in certain gifts from Dr. T. D. A. 

 Cockerell, of the University of Colorado, which comprise, besides 

 numerous wasps and miscellaneous insects, the t^^pes of 81 species of 

 Hymenoptera, cotypes of 10 species, and an allotype of 1 species. 

 From Copenhagen, Denmark, two valuable contributions were re- 

 ceived, one from Mr. E. Eosenberg illustrating the life histories of 

 94 species, together with the biological material of 68 species of Eu- 

 ropean Coleoptera ; the other from. Mr. J. P. Kryger, consisting of 

 146 vials of Coleoptera and 51 vials of Hymenoptera. 



Because of delay in receiving the necessary drawers, but little 

 progress was made in the work of transferring specimens to the per- 



