G lauconycter is /rom the Cameroons. 145 



upper half again straiglit ; tij) Ijroadly rounded off; outer 

 edge straight above, convex below ; the outer ba.^al lobe well 

 developed, rounded. Tragus fairly large, its inner t<\fre 

 concave, outer convex ; a well-developed angular external 

 basal lobule. Lobes at angles of mouth rather small. Wings 

 from the base of the toes. Calcar of medium length, a rudi- 

 nientarv ])Ostcalcareal lobule present. 



Skull large in proportion to the size of the animal, its 

 brain-case of the usual swollen shape, though not to so 

 exaggerated an extent as in some species. 



Inner upper incisors long, their distinct secondary cusp 

 near their tips. Outer incisors minute, their tips reaching 

 barely halfway to the secondary cusp of the inner pair. 

 Lower incisors not markedly overlapping. 



Dimensiojis of the type (measured on the spirit-specimen) : — 



Forearm 38 mm. 



Head and body 43 ; tail 41 ; ear, from notch 13*3, from 

 anterior projecting angle 11 ; greatest breadth 13'5 ; tragus, 

 length on inner edge 4 ; third finger, metacarpus 36, first 

 ph.ilanx 14 5 ; lower leg and foot (c. u.) 24 ; calcar 15"5. 



ykull : greatest length 13 ; basi-sinual lengtii 10 ; 

 zygomatic breadth 9"2; interorbital breadth 3*8 ; breadth of 

 brain-case I'O ; palato-sinual length 5*3 ; front of canine to 

 back of ni^ 4"5 ; front of p* toback of m^ 2 2 ; breadth between 

 outer corners of ni' O'o. 



Hah. and Type as above. 



This well-marked species is readily distinguishable from 

 the other two brown-winged Glaucotii/cteris, G. poensis and 

 beairia;, by its much larger and less evenly rounded ears and 

 by the length of its skull, wiiich is 13 mm. in length as 

 against 12 mm. in poensis and 11 mm. in beatrix. 



Peters's Vesperus kraussi, from Yoruba, Lagos, appears to 

 agree with G. poensis in all essential respects. Its locality 

 is almost identical, as the type of G. poensis came from the 

 Lower iNiger, and not from Fernando Po *. 



3. Glauconycteris beatrix, Thos^ 



? . No. 30. Isongo, near Bibundi. 



This, the smallest species of the genus, is distinguishable 

 from G. poeribis by its short rounded skull, only 11 mm. in 

 length, and its shorter and differently shaped t\ 



The type was obtained on the Benito River, French 

 Congo, by Mr. G. L. Bates. Another specimen was collected 

 in 1905 at Entebbi, Uganda, by Mr. E. Degen, and is now 

 in the British Museum. 



* See Allen and Thomson, Exp. Niger, ii. p. 479 (1848). 

 Ann. dc Mag. N. Hist. Ser. 8. Vol. xi. 10 



