developed spur on each hind foot). Another important accession of 

 mammals is two European bison (skins and skeletons), gift of 

 Tierpark Hellabrunn, Munich, through its director, H. Heck. The 

 largest accessions of birds came from our expeditions, 1,639 speci- 

 mens from Samar in the Philippines and 241 specimens from Madre 

 de Dios, Peru (see page 60), both lots providing new research mate- 

 rial. The collection of African reptiles and amphibians was enriched 

 by about 800 specimens (primarily from the National Park Institu- 

 tion of the Belgian Congo, from M. C. J. lonides, and from Field 

 Associate Hoogstraal, by exchange, purchase, and gift), which in- 

 clude some specimens of described species not represented in our 

 collections. The fishes received as exchange or gift (some 2,680 speci- 

 mens) from the University of California at Los Angeles are particu- 

 larly valuable as reference material. As new research material the 

 1,042 lots of fishes (approximately 5,210 specimens) collected in co- 

 operation with the United States Fish and Wildlife Service are par- 

 ticularly important (see page 60) . Chicago Zoological Society con- 

 tinued to donate to our collections specimens of rare and difRcult-to- 

 secure animals that die in their custody. 



With the purchase of the cetoniid and lucanid beetle collections 

 of the late Eduard Knirsch of Vienna (about 34,000 specimens) our 

 insect collections have become the most important in the western 

 hemisphere for the study of these beetles (see page 68) . Exchanges 

 brought some 500 species of European beetles from the Frey Museum, 

 Munich, and the Senckenberg Museum, Frankfurt. As gifts we 

 received a collection including about 2,000 North American butter- 

 flies and moths from Dr. David Kistner, of the University of Roches- 

 ter, and from expeditions more than 2,000 mammal ectoparasites. 



The purchase of the James Zetek collection of nonmarine shells 

 added to our mollusk collection 40,000 specimens representing about 

 4,000 species, the most important accession of shells in the past ten 

 years. Dr. Zetek exchanged specimens with conchologists in all parts 

 of the world and many famous malacologists were among his corre- 

 spondents. Some material in the collection has assumed special im- 

 portance because of world events (see page 84). A gift of 759 

 European clausiliid landsnails was received from the Academy of 

 Natural Sciences of Philadelphia in return for identifications, about 

 1,200 marine shells of the Ryukyu Islands were purchased from 

 Mrs. Rudolf J. Rogers, a collection of rare and beautiful seashells 

 was given by Walter Cherry of Winnetka, Illinois, and, as in past 

 years, a series of species unrepresented in our collection of marine 

 shells came to us as a gift from Dr. Jeanne S. Schwengel of Scarsdale, 

 New York (100 marine shells, worldwide). 



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