150 NEW YORK STATE MUSEUM 



1897 Lasionycteris noctivagans Miller, North American fauna. 16 

 Oct. 1897. no. 13, p. 86. 

 BlacMsh, frosted ivith white. Total length, 100 (4) ; tail vertebrae, 40 {1^) ; 

 forearm, 40 (lis), (noctivagans; Lat., night wandering) 



The silvery bat is a common species in eastern North America. It is 

 apparently most numerous in the boreal and transition zones. 



Genus Pipistrellus Kaup 



1829 P i p is tr e 1 1 us Kaup, Skizzirre Eutwiek.-gesch. u. natiirl. syst. d. 

 Europ. Thierw. Th. 1, p. 98. Type Vespertilio pipistrellus. 

 Schreber. 



Teeth 34; two pairs of front teeth in upper jaw between canines; back of 

 membraue between legs thinly haired on basal third. (Pipistr611u8; N. 

 Lat., a pipistrelle) 



The genus Pipistrellus is widely distributed in both old and 

 new worlds. It contains numerous species, only three of which are 

 American. One of these occurs within our limits. 



Pipistrellus subflavus (F. Cuvier) American pipistrelle 



Hairs on hack with three distinct color l)ands. Total length, 85 (3f ) ; tail verte- 

 brae, 40 (Its) ; forearm, 35 (If), (subfla vus; Lat., yellowish.) 



The pipistrelle inhabits the eastern United States north to Lake 

 George, New York. It is one of the most abundant bats throughout 

 the austral zones. It is divisible into two subspecies. 



SUBSPECIES OP PIPISTRELLUS SUBFLAVUS 



General color light yellowish brown P. subflavus subflavus 



General color drab brown P. subflavus obscurus 



Pipistrellus subflavus subflavus (F. Cuvier) Southeaster}! pipistrelle 

 1832 Vespertilio subflavus F. Cuvier, Nouv. Aun. nius. d'hist. nat. 



Paris, p. 17. (Eastern United States, probably Georjiia) 

 1897 Pip i str e 1 lus subflavus Miller, North American fauna. 16 Oct. 

 1897. no. 13, p. 90. 

 General color light yellowish hroivn, the individual hairs on back deep plum- 

 beous at base, yellowish brown at middle and dark brown at tip. (subflavus; 

 Lat., yellowish) 



The southeastern pipistrelle is very abundant throughout the austral 

 zones of the eastern United States, north to the lower Hudson valley. 



Pipistrellus subflavus obscurus Miller Northeastern pipistrelle 

 1897 Pi p i 8 1 r e 11 u s subflavus obscurus Miller, North American 

 fauna. 16 Oct. 1897. no. 13, p. 93. (Lake George, New York) 

 General color dull, pale, drah brown, (obscurus; Lat., dusky) 

 The northeastern pipistrelle is at present known from one locality only, 

 Lake George, Warren co. N. Y. 



