REPORT OF NATIONAL MUSEUM, 1922. 57 



specimens of the very interesting and hitherto poorly represented 

 fauna of Australia. The work was terminated during the winter, 

 and Mr. Hoy returned to the United States in May, 1922. The speci- 

 mens received during the year from north Queensland and from 

 Tasmania bring the total up to 1,179 mammals, 969 birds, and 

 smaller collections of reptiles, amphibians, insects, marine inver- 

 tebrates, etc. 



On June 15, 1921, Arthur de C. Sowerby sailed for China to re- 

 sume the work on which he had been engaged for several years 

 until interrupted by the war. The expenses of this work are to be 

 met by Robert S. Clark, who, with great liberality, is presenting 

 all the material collected to the National Museum. This material 

 will consist of chiefly vertebrates, and will be obtained in the south 

 and other parts of China not hitherto represented in the Museum's 

 collections. Actual field work began in the fall of 1921. One ship- 

 ment of specimens from the Province of Fukien, including 77 mam- 

 mals and an interesting collection of birds, was received during the 

 fiscal year. 



Dr. William M. Abbott visited the Dominican Republic during 

 the winter and spring of 1921-22, generously presenting the results 

 of his work to the Museum. Particular attention was given to col- 

 lecting plants, of which 3,500 numbers were secured. He also ob- 

 tained interesting small collections in other branches. In addition 

 to revisiting the region of Samana Bay, Doctor Abbott collected 

 extensively in the Barahona district and in the mountains about 

 San Francisco de Macoris. 



One of the most valuable single accessions received during the 

 year was the collection of about 100,000 insects and some miscel- 

 laneous material of other lands, including vertebrates- made by Dr. 

 William M. Mann while attached to the Mulford Biological Ex- 

 ploration of the Amazon Basin. This expedition was organized by 

 the H. K. Mulford Co., of Philadelphia, under the direction of Dr. 

 H. H. Rusby, the eminent botanist, chiefly for the purpose of study- 

 ing drug plants, but also for making general biological collections. 

 By invitation of the expedition, Doctor Mann was attached as 

 entomologist and assistant director. The expedition was in the 

 field about 10 months, during the last three of which Doctor Mann 

 became director on account of the illness of Doctor Rusby. Field 

 work began in Bolivia at the headwaters of the Bopi River and 

 continued down this drainage system to the Amazon with several 

 side trips, the most important of which was to Lake Bogagua in 

 the northern margin of the Pampas. 



Doctor Bartsch continued his experiments in heredity which have 

 been carried on for 10 years under the joint auspices of the Smith- 

 sonian Institution and the Carnegie Institution of Washington. 



