1897.] Zoology. \ 545 
circulation of such small animals as mice, they quickly succumb to its 
action. In the case of one experiment the mouse died within a few 
seconds after it was bitten; in another, the animal did not succumb 
until four days had elapsed. The two snakes experimented upon did 
not seem to be affected. They died, but this appeared to have been due 
to lack of proper care. 
The results of the experiments are so varying that it would be well 
worth the while of some one to undertake a series of experiments with 
the poison of centipedes that would result in more definite knowledge 
as to its effect upon the blood, tissues, etc., as well as to the rapidity of 
its action when injected into the circulation in different degrees of con- 
centration.—F. ©. Kenyon. » | 
An Organ on the Femur of Phlcothrips Resembling the 
Auditory Organ of Locusta.°—During his physopod studies Try- 
ee 
F 
Figs? 1-3.  Phiæothrips tibialis Reuter 9. Mig. 1 . The base of the — 
fig. 2. he "s of the meddle, and fig. 3. The base of the Meeps a fem 
Fig. 4 setinodis Rent, Base of the posterior fem 
°F. Sse Entom. na 17, 1896, No. 2-3, pp. 102-4, fig. 4. 
