234 



CHIROPTERA 



Diagnosis. — Similar to Eptesims serotinus but smaller, condylo- 

 basal length of skull about 18 mm. instead of 19 to 21-6 mm. 



Measurements. — Type (young-adult male) : head and body, 

 63; tail, 42; tibia, 18-6; foot, 9-8; forearm, 45-4; third 

 finger, 79-0; fifth finger, 58-0 ; ear (fresh), 18. Adult from 

 St. Gothard, Switzerland : tibia, 19 ; forearm, 48. For cranial 

 measm-ements see Table, p. 233. 



Specimens examined. — Two, from the following localities : — 

 Switzerland: St. Gothard, 1 (U.S.N. M.). 

 RouMANiA : Bustenari, Prahova, 1 (type). 



RemnrJcs. — The two specimens on which this species is based 

 indicate the existence of an animal bearing much the same 

 relationshij) to Eptesirus serotinus as Nyctalus nocfula to N. 

 maximus. 



S. Bustenari, Prahova, 840 m. Lord Lilford (p). 4. 4. 6. 1. 



Roumauia. (W. Dodson.) [Type of species.) 



EPTESICUS NILSSONII Keyserling and Blasius. 



1836. Vespertilio kuhlii Nilsson, Ilium. Fig. Skand. Fauna, pt. 17, pi. .34 



upper figure. Not of Kuhl, 1819. 

 1888. Vespert\ilio'] borealis Nilsson, Ilium. Fig. Skand. Fauna, pt. 19, 



pi. 34 (renumbered 36) upper figure. Not of P. L. S. Miiller, 1776 



(Scandinavia). 

 1839. V[csp}crfilio] nilsso7iii Keyserling and Blasius, Wiegmann's Archiv 



fiir Naturgesch., 1839, p. 315 (Mountains of Scandinavia. Based 



on the V. kuhlii of Nilsson, 1836). 



1857. Vesperugo nilssonii Blasius, Saugethiere Deutschlauds, p. 70. 



1858. Amhlyotas atratus Kolenati, Sitzungsber. kais. Akad. Wissensch. 



Wien, Math.-Naturwissensch. Classe, xxix, p. 252 (Altvater, 



Austrian Silesia, alt. 2400-4600 ft.). 

 1878. Vesperugo burealis Dobson, Catal. Chiropt. Brit. Mus., p. 203. 

 1894. Vesperugo nillsoni (sic) Rhoads, Reprint Ord's N. Amer. Zoology, 



Append., p. 3. 

 1907. E['ptesicus'] nilsso7ii Miller, Families and Genera of Bats, p. 209, 



June 29, 1907. 

 1910. Eptesicus nilssoni Trouessart, Faune Mamm. d'Europe, p. 23. 



Type localiUj. — Sweden. 



Geographical distribution. — Continental Europe, from northern 

 Norway to the Alps. 



Diagnosis. — Size medium (forearm less than 40 mm., condylo- 

 basal length of skull less than 16 mm.) ; colour of upper parts a 

 rich dark brown, the hairs of back with noticeably contrasted 

 light tips ; underparts light yellowish brown ; a well defined 

 line of demarcation along sides of neck. 



External form. — In general the external form agrees with 

 that of Eptesicus serotinus, due allowance being made for the less 

 robust stature of the smaller animal. Ear relatively Ljnger, 



