1912.] Townsctid, Mammals from Lower California. 127 



Measurements, average of 12 specimens: total length, 197; tail, 111; 

 hind foot, 22. 



Represented by 5 males, 7 females, Carmen Island, April 13. 



Sciurid.e. Squirrels, Spermophiles, etc. 



Antelope squirrels were observed at three localities only. We did not 

 see them at any point on the west side of the Peninsula. All specimens 

 were obtained by shooting. 



45. Ammospermophilus leucurus insularis Nelson and Goldman. 



Espiritu Santo Island Spermophile. 



Three males, 1 female, 2 skulls, Espiritu Santo Island, April 19. 



46. Ammospermophilus leucurus peninsulae Allen. Lower Cali- 



fornia Spermophile. 



Five males, 1 female, Cape San Lucas, March 24; 1 skull, Agua Verde 

 Bay, April 22. 



Vespertilionid^e. Insectivorous Bats. 



Bats were not much in evidence during our explorations, as we were 

 seldom ashore in the evening. The specimens with one exception were 

 obtained in the interior by a collector sent from the ship. 



Several species are known to inhabit Lower California. 



47. Pipistrellus hesperus australis Miller. Allied Bat. 

 One female, Ceralbo Island, April 19. 



48. Dasypterus ega xanthinus Thomas. Sierra Laguna Bat. 

 Two specimens, Miraflores, May 7. 



49. Antrozous pallidus minor Miller. Little Comondu Bat. 

 Three specimens, Miraflores, May 1-3. 



50. Myotis peninsularis Miller. Lower California Bat. 

 Five specimens, Miraflores, May 1-6. 



