150 NEW YORK STATE MUSEUM 



1897 Lasionycteris noctivagans Miller, North American fauna. 16 

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

 BlacUsh, frosted with ivhite. Total length, 100 (4) ; tail vertebrae, 40 (1t%) ; 

 forearm, 40 (lili). (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 tre 1 Ins Kaup, Skizzirte Entwick.-gesch. u. natiirl. syst. d. 

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

 Schreher. 

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

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

 Lat., a pipistrelle) 



The genus Pipistrellus is v^idely 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 'bade with three distinct color lands. Total length, 85 (3f ) ; tail verte- 

 brae, 40 (Its) ; 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 OF PIPISTRELLUS SUBFLAVUS 



General color light yellowish brown P. subflavus subflavus 



General color drab brown P. subflavus obscurus 



Pipistrellus subflavus subflavus (F. Cuvier) Southeasterii pipistrelle 

 1832 Ve sp e r til i o subflavus P. Cuvier, Nouv. Aun. mus. d'hist. nat. 



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

 1897 Pipi str el 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 JVbrt/teastem pipistrelle 

 1897 Pi p i strell u 8 subflavus obscurus Miller, Nortb American 

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

 General color dull, 2)ale, drab hvowu. (obscurus; Lat., dusky) 

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

 Lake George, Warren co. N. Y. 



