STOMOXYS CALCITRANS LINN. 
Cuas. K. BRAIN, B. A., F. E. S., Entomologist.* 
Stomoxys calcitrans Linn. has often been suspected of being 
an agent in the transmission of disease, and the recent experi- 
ments of Rosenau, Anderson and Frost seem to show con- 
clusively that this insect can, and may, transmit Acute 
Poliomyelitis in animals—monkeys were used. 
Fig. 1. Stomoxys calcitrans Linn. 2. (After Austen.) 
It is not said that Stomoxys calcitrans is the actual carrier of 
Infantile Paralysis in Nature, but its common occurrence in 
localities where the disease is most prevalent, and its ability to 
transmit the disease from sick to healthy animals, makes 
further study of the species desirable. Considerable mention 
has been made of this fly in the entomological literature of the 
last fifty years, chiefly in relation to its occurrence in stables, 
and various methods have been recommended for its destruc- 
*This work was undertaken in connection with experimental work now being 
conducted by the Ohio State Board of Health, and the blocks used for the 
illustrations are the property of that Board. 
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