NYCTALUS 253 



basal length of skull, 15 to 16 mm. ; forearm, 39 to 43 mm. • 

 basal portion of fur conspicuously darkened. ' 



Cohmr.— The colour is usually a brown, darker than in JV 

 nociula, nearly the prout-brown of Ridgvvay, with or without -i 

 lighter, wood-brown tinge, and usually showing drab or isabelk 

 reflections in certain lights, the underparts not so dark as back • 

 hairs everywhere blackish (seal-brown) through basal half Eai-s 

 and membranes (dry) blackish. Two skins are a pale bufty wood- 

 brown throughout except for the usual dark bases of the hairs 



Slcull and teeth.—Except for its smaller size and more delicate 

 structure the skull does not differ appreciably from that of 

 Nyctahis noctula. Teeth essentially as in the larger species but 

 crown area of upper incisors nearly equal, and lower incisor row 

 forming a deeper, almost V-shaped convexity. 



Measurements.— Externiil measurements of adult male from 

 Co. Wicklow, Ireland : head and body, 60 ; tail, 39 • tibia 16 • "^ ■ 

 foot, 8-2 ; forearm, 42 ; third finger, 78 ; fourth finger, 48 • elv 

 from meatus, 13. Adult female from Co. Armagh, Ireland • 

 head and body, 63 ; tail, 42 ; tibia, 16-6 ; foot, 8 ; forearm 4"' • 

 third finger, 76 ; fifth finger, 49 : ear from meatus, 14 • width 

 of ear, 14. Two adults from Welford, Warwickshire, Ent^knd • 

 forearm, 40 ■ 4 and 41 • 4. Adult from Meiringen, Bern, Switzer- 

 land : forearm, 40. For cranial measurements see Table 

 p. 255. ' 



Spcciviens examined. ~^\e\m, from the following localities •— 

 Ieeland: Belfast, 1; Bray, Co. Wicklow, 2- Co Armacrh "> 

 England: Mexbro', Yorkshire, 1; Welford, Warwickshire! 2 ■ Cleave 

 Priory, 1 ; no exact locality, 1. ' ^^^"'^'^ 



RouMANiA : Bustenari, Prahova, 1. 

 Switzerland : Meiringen, Bern, 1. 



JJemarfc.— Though its smaller size is the most obvious 

 character of this species as compared with JV. noctida the 

 bicolored fur, the difierent relative sizes of the upper incisors 

 and the more abrupt convexity of the mandibular incisor series 

 would by themsehes be quite sufficient to distinguish it. 



9. Belfast Ireland. G. Barrett-Hamilton (p.) 1. 3. 15 1 



6 a . Bray, Wicklow. J. E. Harting (c & p).' gO. 2. 14 1 



9a. Armagh. Dr. G. E. Dobson (c & p). 89.11.12.5 



2 9 wTf?!'^ w •,.,• R-M.Barrington(c&P). 74.5.28.8.' 



2y. Welford, Warwickshire, Tomes CoUection 7 1 1 SSfi- 



England. 'sS7 



6. Cleeve Priory, Warwick- Tomes Collection. 7. 1. 1. 388. 



1. England. Dr. Leach (p). 63 a 



6. Bustenari, Prahova, 840 m. Lord Lilford (p) 44fifi 



Roumauia. (ir.Z>o(/.>,o«.) *• ^. o. o. 



1. Meiringen, Bern, Switzer- Tomes Collection. 7 1 1 sqq 



land. I. J.. J., ooy. 



