MAMMALS. 101 



shooting them on the wing when tliey first come out of tlieir diurnal 

 liiding places, and usually the light is so dim when they first appear 

 that wing shooting is rendered difficult, and in most cases considerable 

 ammunition is wasted for the few specimens secured. Occasionally 

 one is caught in a room at night, or a hiding place is found where they 

 juay be secured from a crack or crevice as they hang head downward 

 during the day. Specimens of these or any other bats in the park 

 should be saved whenever possible, as it will be long before sufficient 

 material is obtained to show all of the species inhabiting the area. 



Bkown Bat: Epfesicus f uncus fuscus (Beauvois). — Large, brown, 

 rapid-flying bats seen of evenings about the Many Glacier Hotel in 

 mid-July were apparently of this species, but no specimens were ob- 

 tained, owing to the danger in shooting around occui:)ied buildings. 

 Those seen were flying rapidly about the buildings and along the lake 

 shore at earlj' dusk, while it was still light enough to see color and to 

 have easily secured them on the wing with a shotgun if shooting had 

 been permissible. Evidently thej' are not very common in the park, as 

 none were seen in other locations away from buildings, although the 

 species often lives in hollow trees or under bark in the woods as well 

 as in the dark spaces under eaves and cornices of buildings. They 

 undoubtedly range over most of the park areas, but are rarely seen 

 except near where they spend the day and as they first come out of 

 their roosting places. 



Silver-haired Bat. Lasionycteris noctivar/ans (LeConte). — A 

 number of medium-sized very dark and rapid-flying bats seen over 

 the hotel and among the trees at Lake McDonald, August 29, were 

 evidently of this species. The silvery tipping of the black fur over 

 the back could not be seen with the bats on the Aving, but the size, 

 rapid flight, and dark color are almost unmistakable characters with 

 this species. The dense forests of the park present ideal conditions 

 for these boreal, forest-loving bats, the loose bark on numerous dead 

 trees affording favorite places in which to spend the daylight hours, 

 and the forest-dwelling insects, their favorite food. I tore the bark 

 from many old trees in the woods in the hope of securing specimens 

 from underneath, but was not successful Avithin the park area. If 

 possible, specimens should be secured and preserved in order that 

 l^ositive records for the park may be obtained, as flight identification 

 of bats is at best unsatisfactory. 



HoartBat: Nj/ctnis cinerea (Beauvois). — At Waterton Lake. near 

 the north end of the park, at 11 o'clock in the morning of August 15, 

 one of these big gray, short-eared bats was seen flying about in the 

 bright sunlight over the vrater and back into the trees on the shore of 

 the lake. It was watched for several minutes with the field glass and at 

 such close range that, with its every mark and character plainly recog- 

 51140°— IS 9 



