374 University of California Publications in Zoology  {[Vou.17 
perhaps a victim of the unusually cold night which preceded the eol- 
lector’s visit. The mummified remains of a third individual of the 
species was found upon a heap of guano upon the floor of this gable, 
together with the dried remains of two specimens of Antrozous 
pacificus. A visit to the same place made on January 6, 1913, failed 
to reveal any bats. 
The live Humops californicus secured by Mr. Camp, December 27, 
1912, at Sierra Madre was received at the Museum of Vertebrate 
Zoology, December 28. She hung herself up by the feet in a dark cor- 
ner of the cage in whieh she was domiciled, and remained quiet until 
forcibly removed. She used feet and half-closed wings in an energetic 
endeavor to dislodge the writer’s fingers from her back, and constantly 
kept her mouth opened to the widest extent in an effort to seize the 
fingers, all the while uttering shrill cries, loud enough to be heard at a 
distance of several hundred feet. These sounds might be likened to 
the utterances of a young robin in distress, and were cries, not mere 
squeaks. 
When placed in a glass jar containing a bit of cotton saturated 
with ether the bat made strenuous efforts to escape, striking out with 
both feet and half-closed wings. While the bat was still partially 
under the influence of the anesthetic an endeavor was made to smooth 
her dampened and ruffled fur with a small brush. She curled and 
twisted about the offending object in a way which showed the greatest 
flexibility of body. When left to her own devices the bat clung 
- to the rod above her with her right foot while with her left foot she 
thoroughly combed the dorsal surface of her left wing and her head 
and body on the left side, both dorsally and ventrally. Then shift- 
ing her hold to the other foot she repeated the combing process for 
the right half of her head and body with the alternate foot. Finally 
she became quiet and hung for a time motionless, her whole body 
being supported by one foot, the other hanging down on her back, 
the claws toward the center of her back and the folded ankle joint 
resting in a pocket formed by a fold of the wing membrane. Her 
eyes remained open but were completely in the shadows cast by the 
anterior margins of her ears and her loosely folded wings. 
When the bat was placed gently upon the floor of her cage she 
scuttled backward with surprising rapidity, backing up the side of 
the cage until her nose just cleared the floor. She remained for 
some time in this position supporting herself by clinging with her 
claws to the unplaned surface of the board. When the observer 
