318 Mr. 0. Thomas on 



Nyctinomus ansorgei, sp. n. 



Allied to i\". cisturus, Tlios., with which alone it shares a 

 somewhat Ckcerephon-Vike shape of: skull combined with 

 typical Nyctinomus m^ and piemaxillie. 



Size about as in N. cisturus; distribution of fur as in that 

 species, except that the tail and inteifemoral are less hairy ; 

 a partly naked patch on the crown behind the junction of the 

 ears, and another across the nape just in front of the shoulders. 

 General colour above dark chocolate-brown, the tips of the 

 hairs paler. Below, succeeding the naked chin, the throat 

 is blackish brown, considerably darker than any other part 

 of the animal, and suggesting the blackish beard of certain 

 species of Taphozous ; chest and belly lighter brown, the tips 

 markedly lighter than the bases, but not anywhere white. 

 Ears of medium size, rounded ; basal keel not specially 

 thickened ; antitragus triangular, rounded above, about half 

 as high as long, separated behind by a deep notch. Tragus 

 small, subquadrangular, very different from the triangular 

 pointed tragus of iV. cisturus. Tail apparently without 

 special glands. 



Skull on the whole very similar to that of iV. cisturus, but 

 rather larger throughout ; upper profile not so convex in the 

 frontal region. Teeth as in cisturus ; anterior upper pre- 

 molar in the tooth-row, not crowded, but just filling up the 

 space between the canine and ^A Lower incisors 4. Ante- 

 rior lower premolar broader than the posterior. 



Dimensions of the type (the italicised measurements taken 

 in the flesh) : — 



Forearm 47 mm. 



Head and body 70; tail 32; ear 19; tragus (dry) 1-5; 

 third finger, metacarpus 46, first plialanx 18 "6, second 

 phalanx 19 ; fifth finger, metacarpus 28. 



Skull : greatest length 19"2 ; zygomatic breadth 11*4 ; 

 interorbital breadth 4*2; mastoid breadth I0"7; front of 

 canine to back of vi^ 7*4. 



Hah. Malange, North Angola. Alt. 1150 m. 



Type. Adult male. B.M. no. 10. 4. 8. 4. Original 

 number 5. Collected 17th February, 1909, by Dr. W. J. 

 Ansorge. 



The Angolan species described by Sr. de Seabra all 

 have the low skull of typical Nyctinomus, N. cisturus being 

 the only known species combining a high skull with the 

 complete m^ and divided premaxillte which distinguish 

 Nyctinomus from Chcerephon and Mops. From N. cisturus the 



