150 NEW YORK STATE MUSEUM 



1897 Lasionyeteris noctivagans Miller, North American fauna. 16 

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



Blackish, frosted ivith white. Total length, 100 (4) ; tail vertebrae, 40 (li%) ; 

 forearm, 40 (1 10). (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 pis trellus Kau]), Skizzirte Eutwiek.-gesch. u. natiirl. syst. d. 

 Bnrop. Tbierw. Tb. 1, p. 98. Type Vespertilio pipistrellus. 

 Schreher. 

 Teeth 34; two pairs of front teeth in upper jaw Ijetween canines; hack of 

 membrane between legs thinly haired on basal third. (Pipistr611ns; N. 

 Lat., a iiipistrelle) 



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 

 Sairs on hack with three distinct color hands. Total length, 8.5 (3|) ; tail verte- 

 hrae, 40 (lii) ; forearm, 35 (If).- (subflavus; 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) Southeastern pipistrelle 

 1832 Ve sp e r til i subflavus P. Cnvier, Nouv. Ann. mus. d'hist. nat. 



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

 1897 Pip i st r e 1 1 us subflavus Miller, North American fauna. 16 Oct. 



1897. no. 13, p. 90. 

 Genera! coior i/gZtf j/eZ?OH)J8/8 Zirotom, the individual hairs on hack deep plum- 

 beous at base, yellowish brown at middle and dark brown at tip. (s u bfl^vus ; 

 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 Northeasterii pipistrelle 

 1897 P i p i s t r e 1 1 u 8 subflavus obscurus Miller, North American 

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

 General color dull, pale, (JcaS browu. (obscurus; Lat., dusky) 

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

 Lake George, Warren co. N. Y. 



