Issued October », 1009. 
U. S. DEPARTMENT OF AGRICULTURE, 
BUREAU OF ANIMAL INDUSTRY— BULLETIN NO. 39. 
A. D. MELVIN, Chief ok Bureau. 
INDEX-CATALOGUE 
OF 
MEDICAL m TETERINAKY ZOOLOGY. 
PART 24. 
[Authors: R to Rizzo.] 
BY 
CH. WARDELL STILES, Ph. D., 
Consultmg Zoologist of Bureau of Animal Industry; Zoologist of U'. S. Public 
Health and Marine-Hospital Service, 
AND 
ALBERT HASSALL, M.R. C. V. S., 
Assistant in Zoology, JJuirau of Animal Industry. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1909. 
