390 



NORTH AMERICAN FAUNA 



[No. 55 



in large bunches, as large as a bushel basket in winter in the back of 

 the caves where the cold is less intense. The 4 specimens taken were 

 all females, and the 1 saved contained one very small embryo, the 

 size of a no. 8 shot. It was only moderately fat and with empty 

 stomach weighed 8 g. 



ANTROZOUS PALLIDUS PACIFICUS MEBEIAM 



PACIFIC PALE BAT 

 Antroeous pallidus pacificus Merriam, Biol. Soc. Wash. Proc. 11: 180, 1897. 



Type. Collected at Old Fort Tejon, Canada de las Uvas, Calif., June 28, 

 1891, by C. Hart Merriam. 



General characters. Size large, much larger and darker than pallidus, 

 spread of wings about 14 inches; ears large and wide (pi. 52, ) about an inch 

 long, wide apart; teeth 28. Color buffy yellow all over, upper parts heavily 

 washed with sepia pr light brown; ears and membranes dull dark brown. 



Measurements. Spread of wings, about 355 mm. Total length of type speci- 

 men, adult male from alcohol, 113; tail, 43; foot, 13; forearm, 59. Of adult 

 female from Alila, Calif., measured in the flesh: 114; 40; 15. Another from 

 Bear Valley, San Bernardino Mountains: 121; 44; 14.5. Weight of female 

 just before birth of 2 young 19 g (Grinnell, Dixon, and Linsdale, 1930, p. 457). 



Distribution and habitat. These large bats have been collected in 

 a few localities in western Oregon, but their main range is in the 

 Upper Sonoran valley country of California, west of the Sierra and 



San Bernardino Moun- 

 tains and south into Mexi- 

 co (fig. 102). From Ore- 

 gon there are 2 specimens 

 in the Jewett collection 

 taken by Elmer Williams 

 on September 16, 1923, 

 from a big hollow yellow 

 pine on the ridge between 

 Salt Creek and Evans 

 Creek in the northwest 

 corner of Jackson County, 

 about 40 miles north of 

 Rogue River post office 

 and at an altitude of about 

 4,000 feet. When the 

 writer visited the place 

 with Williams in July 

 1927 the tree had apparently been burned, but the 2 bats saved were 

 from a colony of apparently several hundred inhabiting the hollow 

 pine. Williams reported the guano a foot deep on the ground at 

 the base of the tree, indicating a regular residence for this colony. 

 The specimens were later examined at Portland and proved to be the 

 dark colored pacificus. 



In the collection of the University of Oregon at Eugene is a speci- 

 men of this large dark form that seems to be typical pacificus, an 

 adult male collected May 14, 1914. 



Two specimens in the Merriam collection, now a part of the United 

 States National Museum collection, were taken at Fort Klamath by 

 Bendire in 1883, and having been in alcohol for 45 years, have almost 

 lost their color. However, the skulls and teeth show these to be the 

 large form pacificus. 



FIGURE 102. Range of the large pale bats in Ore- 

 gon : 1, Antrozous pallidus paciflcus; 2, A. p. cant- 

 welli. 



