595 
straight, and bluntly rounded at tip, width much greater than 
length of anterior margin. The back of the interfemoral membrane 
is furred on the basal half. 
The general color over all the body is a dark chocolate or seal- 
brown with white-tipped hairs. In general the individual hairs for 
the basal two-thirds are a dark seal-brown shading to a narrow 
band of richer color and abruptly tipped with white. The difference 
in general effect in the different parts of the body is due to the rel- 
ative length of the white tips. On the head the white tips are 
short, while over the back they are long, giving a grizzled ap- 
pearance to that part. The ears are dark clove-brown. 
This species is one of 
the most common in this 
locality. It has often 
been taken on the cam- 
pus and in the buildings 
of the University. It has 
‘been reported from vari- Fig. 7. Head and ear of silver-haired bat. (Miller.) 
ous parts of the state, 
and is probably common throughout Illinois. Merriam says that the 
silver-haired bat in the Adirondacks hunts chiefly over the water- 
courses, but in this state it seems to be quite as common in towns 
and villages. 
The young are produced in July. There are usually two in a 
litter. 
In the northern part of its range it is said to migrate south in 
winter, but it is also found hibernating in hollow trees in New York 
State. 
GEORGIAN BAT. 
Prpistrellus subflavus (F. Cuvier). 
Vespertilio subfiavus F. Cuvier, Nouv. Ann. Mus. d’Hist. Nat. Paris, 1832, p. 17. 
Vesperugo carolinensis H. Allen, Monogr. Bats of N. A., 1893, p.121. (Not Vesper- 
tilio carolinensis Geoff.) 
The general range of this species is from the Atlantic coast west 
to Iowa, and south to eastern and southern Texas.. 
Dental formula: 2, ?/,; ¢, */,; pm, 7/.; m, 3/s. 
