42 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1926 
Walter Rathbone Bacon Scholarship of the Smithsonian Institution. 
Doctor Schmitt collected from August, 1925, to February, 1926, at 
various stations on the coast of eastern South America from Brazil 
south to Buenos Aires, devoting his attention especially to the crus- 
tacean fauna, but collecting specimens in many other groups. The 
material secured is highly valuable and includes many species 
not previously in the National Museum, as well as many new to 
science. 
Rev. David C. Graham continued his zoological explorations in 
Szechwan, western China, and though his travel in this region was 
hindered to some extent by civil warfare and the activities of brig- 
ands, he secured highly valuable collections in various branches of 
natural history. During the summer he visited Mount Omei and 
Washan where a number of new forms were procured and extensions 
made in the known ranges of others. The new material procured 
speaks well for Mr. Graham’s skill as a collector, since the region 
had been visited by other naturalists who had» collected there 
extensively. 
During April and May, 1926, Dr. J. M. Aldrich visited Guatemala 
for the purpose of collecting important diptera needed in the study 
of the Museum collections. His work was financed from personal 
funds and by a small contribution from the Museum. He crossed 
from Puerto Barrios to Guatemala City, and at the request of the 
Guatemalan Government went also to Coban as advisory member of 
a party to study locust infestations and possible means for their con- 
trol. His specimens have included many important additions to the 
collections. Mr. C. T. Greene, honorary assistant custodian of 
diptera, visited Panama from March to May in the interests of the 
Federal Horticultural Board mainly in connection with studies of 
the fruit flies of the genus Anastropha. Mr. Greene made extensive 
collections of diptera which have added extensively to the Museum 
series. 
Through the cooperation of the Navy Department, Dr. H. C. 
Kellers, United States Navy, was detailed to the United States Naval 
Observatory Eclipse Expedition to Sumatra that he might, while 
serving as surgeon to the members of the party, have opportunity to 
collect zoological material. The expedition was established in the 
village of Kepahiang, inland from the seaport of Benkoelen, 
Sumatra. During the period from October to January, Doctor 
Kellers procured a rich collection of marine invertebrates, fresh-water 
crustacea, insects, fishes, reptiles, amphibians, birds, mammals, and 
plants. Considering the time available for the work the collections 
made are extensive and contain many interesting forms new to the 
Museum. They are marked by careful preparation. The coopera- 
