29, 1909. 
U. S. DEPARTMENT OF AGRICULTURE, 
BUREAU OF ANIMAL INDUSTRY— Bulletin No. 39. 
A. D. MELVIN, Chief of Burbau. 
INDEX-CATALOGUE 
MEDICAL AND VETERINARY ZOOLOGY. 
PART 25. 
[Authors: Roack to von Rzewuski.] 
BY 
CH. WARDELL STILES, Ph. D., 
Consulting Zoologist of Bureau of Animal Industry; Zoologist of U. S. Public 
Health and Marine- Hospital Sendee, 
ALBERT HASSALL, M. R. C.V. S., 
Assistant in Zoology, Bureau of Animal Industry . 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE 
1909. 
