28 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1946 
scientists in other American countries, left on April 25 for Colombia. 
During May he was at the Instituto de Ciencias Naturales of the 
National University in Bogota, where he was occupied in consulta- 
tions with government entomologists in connection with cooperative 
investigations, particularly on certain groups of Coleoptera of eco- 
nomic importance. ‘There was opportunity at the same time for field 
studies in a variety of climatic zones ranging from Villavicencio in 
the tropical lowlands at the eastern base of the Andes to the high 
mountain passes above Bogota. In June, Dr. Chapin continued to 
Medellin, where he was occupied for several days with Prof. F. Luis 
Gallego in examining insect collections at the Facultad de Agro- 
nomia. This was followed by similar work in Cali and Palmyra with 
Belisario Losada, and at Popayadn in the Universidad del Cauca. He 
returned to Washington on June 30. 
Dr. Robert R. Miller, associate curator, division of fishes, was 
assigned to a survey of the fish and game resources of Guatemala, a 
cooperative project of the Fish and Wildlife Service of the Depart- 
ment of the Interior and the Guatemalan Government, with the par- 
ticipation of the Smithsonian Institution. Investigations began in 
March and continued until the end of May, Dr. Miller being occupied 
mainly with studies of the fresh-water fishes of the plateau area. 
Collections were made principally above 3,000 feet, covering many 
lakes and streams. In addition there was opportunity for briefer 
studies along the middle Motagua River and in Lake Ysabal. The 
work in the main was in the nature of reconnaissance with expecta- 
tion of continuing in greater detail another season. The present col- 
lections, now under study, are yielding much data of interest. 
In connection with the atom-bomb tests at Bikini, Dr. Leonard P. 
Schultz, curator of fishes, and Dr. J. P. E. Morrison, assistant curator, 
division of mollusks, left in February to begin a detailed survey of the 
fauna of the atoll. It was expected that a careful check would be 
made of conditions following the bomb explosions. The studies of 
Dr. Schultz are concerned with fishes in the lagoon and along the 
reefs to obtain data on the kinds present and on their relative 
abundance. Dr. Morrison is occupied with mollusks and other marine 
invertebrates on the reefs, and also with detailed collections of the 
land animals present, including the birds. There has been oppor- 
tunity also for comparative studies at several other atolls in the Mar- 
shall Islands. The extensive series of specimens already obtained 
will serve as an index to the forms found, and will be especially im- 
portant also as the first collections in the Museum from this area. 
This work was still under way at the close of the year and will be 
reported in more detail next year. 
