Issued June 2, 1910. 
U. S. DEPARTMENT OF AGRICULTURE, 
BUREAU OF ANIMAL INDUSTRY— BULLETIN NO. }9. 
A. D. MELVIN, Chief of Bureau. 
INDEX-CATALOGUE 
OF 
MEDICAL AND VETERINARY ZOOLOGY. 
PART 26. 
[Authors: S to Schnyder.] 
BY 
CH. WARDELL STILES, Ph. D., 
Consulting- Zoologist, Bureau of Animal Industry; Professor of Zoology, 
U. S. Public Health and Marine-Hospital Service. 
AND 
ALBERT HASSALL, M. R. C. V. S., 
Assistant i?i Zoology, Bureau of Animal Industry, 
WASHINGTON : 
GOVERNMENT PRINTING OFFICE, 
1910. 
