296 E. E. AUSTEN A NEW SPECIES OF TSETSE-FLY 



Abdomen : first segment cream-bufF or bnff, with a dusky (dark grey) 

 patch on each side ; dorsum o£ second to sixth segments inclusive dark 

 «epia-brown ; median paler region on dorsum of second segment cream-buff 

 to ochraceous-buff or pale cinnamon, the central lanceolate area enclosed 

 within the usual admedian grooves exhibited by this segment often paler 

 than the region outside the grooves ; one or more of the four segments 

 following the second usually with a paler (buff, ochraceous-buff, or cinnamon- 

 coloured) median area on the dorsal surface ; in some specimens the third 

 and fourth^ third to the fifth, or even the third to the sixth segments 

 each show a narrow paler median longitudinal streak, which usually fails 

 to reach the hind margin of each segment ; in others the paler area on the 

 -third segment, or on the third and fourth segments^ is as broad as that on 

 the second, while on subsequent segments the paler area is reduced to a 

 streak ; lateral margins and posterior angles of second to sixth segments 

 inclusive smoke-grey, scarcely visible from above ; pollinose dorsum of 

 -seventh segment varying from smoke-grey to cream-bufF or buff, often 

 infuscated at base in ? ; hypopygiiun of ($ resembling that of G. palpalis, 

 Rob.-Desv., in shape, but somewhat larger, and, as seen by careful exam- 

 ination from the ventral side, somewhat squarer (/. e. its posterior margin 

 jiot quite so much rounded off). 



Legs ochraceous-buff ; coxae buff, outer surface of front coxae blotched 

 with dark grey ; femora, especially front pair, blotched or streaked with 

 -dark grey or greyish-brown, front femora often almost entirely dark mouse- 

 ^rey ; la«t two joints of front and middle tarsi tipped with dark brown ; 

 hind tarsi entirely blackish-brown above. 



Wings uniformly sepia-brown, fairly dark. Squamce light cream-coloured ; 

 .anti squama hyaline, its fringe brownish. Halteres cream-buff. 



The typical specimens of this species are a (^ and $ from Southern 

 Nigeria, in the British Museum (Natural History), both taken by Mr. G. 

 Garden^ Veterinary Officer, S. Nigeria, — the (^ on a creek near Akitipupu, 

 18.V.1909, the ? in a canoe on a creek between Aro Chuku and Itu_, 

 16.iii.l909. 



Distribution of G. caliginjea, sp. n. 



Up to the present time, this species has been received only from Southern 

 Nigeria. In addition to the types of the (^ and $ , the following specimens 

 -are contained in the Museum collection : — 1 (^ , Benin {A. Millson) ; 1 c? ? 

 Benin City, 18.iii.1910, and 1 S, Forcados, 30.iv.l910 (J. J. Simpson: 

 presented by the Entomological Research Committee) ; 1 (^ , Sobo Plains, 

 July, 1901, and 1 ? , Sapele {Dr. G. F. Darker) ; 1 c^ , 1 ? , Owa River, 

 Lagos, August, 1901 {Dr. W. H. W. Straclian, C.M.G.) ; 1^,2? ? , Oni 

 River, 70 miles east of Lagos, 2, 9, and 29.V.1910 (Dr. W. A. Lamhorn : 

 presented by the Entomological Research Committee) ; 1 ^ ,'^ $ ? , between 



