Isvued Julv 18, 1010. 
U. S. DEPARTMENT OF AGRICULTURE, 
BUREAU OF ANIMAL INDUSTRY— BULLETIN NO. 39 
A. D. iMELVIN, Chief of Bureau. 
I N DEX-CAT ALOGUE 
OF 
MEDICAL AND VETERINARY ZOOLOGY. 
PART 28. 
[Authors: Sim to von Stenitzer.] 
BY 
CH. WARDELL STILES, Ph. D., 
Co?isulti?ig Zoologist, Bureau of Animal Industry ; Professor of Zoology , 
U. S. Public Health and Marine-Hospital Service, 
AXD 
ALBERT HASSALL, M. R. C. V. S., 
Assistant in Zoology, Bureau of Animal hidustry. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE, 
I 9 I O. 
