about 3 km northwest of Mystery Cave. Little Ice Cave is similar 

 in the fractured rock and sinuous character of Mystery Cave, 

 although it lacks the large chambers characteristic of Mystery 

 Cave. Little Ice Cave is cool (approximately 3.3° C throughout) 

 with 100% humidity, although running and standing water was not 

 as apparent as in Mystery Cave. The first 16 m beyond the 3 m X 

 3 m entrance (aspect 220°) are ice covered year round (Cambell, 

 1978) . This cave has several levels, and like Mystery Cave, 

 possesses many crevices where bats could roost. One hundred 

 seventy-four bats were captured at Little Ice Cave on seven 

 nights between 25 June and 11 September (Table 9) . 



TABLE 9. — Bats Captured at Little Ice Cave, 



Total 



156 



18 



174 



Royce Cave (T. 9 S., R 28 E., Sec. 6. Elevation: 1878 m) is 

 located approximately 16 km south of Dry-Head overlook on Tillet 

 Ridge Road in rock outcrop forest. The cave's entrance (aspect 

 180') is small (approximately 2m X 2m) and lies at the bottom of 

 large collapsed sink. A 30 m tunnel leads to a 25 m X 30 m 

 chamber. This cave was fairly warm (8.9° C) and the humidity was 

 100%. Seventy-five bats were captured here on seven nights 

 between 26 June and 9 September (Table 10) . 



TABLE 10. — Bats Captured at Royce Cave 



Total 



44 



31 



75 



Pour-eared bat Cave (T. 9 S., R. 28 E., Sec. 27, Carbon Co., MT; 

 elevation: 1537 m) is located on an arid ridge of Utah 

 juniper-blacksage on BLM land. Plecotus townsendii has used this 



16 



