30 DESCEIPTION OF GLOSSINA CALIGINEA. 



banding faintly pronounced ; lateral margins with pale angular 

 ai'eas. 



" Legs strongly and almost uniformly infuscated (dark grey) ; 

 femora with the basal and ventral portions ochreous-buff ; hind 

 tarsi all dark brown or almost black. 



" Wings. — Anterior transverse vein strongly and suddenly 

 incrassate at its junction with the third longitudinal vein. 



"HABITAT. — The only example which we possess of this 

 interesting tsetse-fly was taken by Dr. Shircore* at Nimule, 

 Nile Province, Uganda. Fortunately it proved to be a male, 

 otherwise it may have passed as a small dusky form of Glossina 

 palpalis." 



Glossina caliginea, Austen. 



(Plate II.) 



Glossina caliginea, Austen, Bulletin of Entomological Research, Vol. I, 

 Part 4, pp. 294-297, figs. 1-3 (January, 1911). 



^, 9. — Length, ^ (15 specimens) 8 to 8-5 mm.,f ? (15 

 specimens) 9 to 10 mm. ; width of head 2*8 to 3 mm. ; width 

 of front at vertex, ^ 0-75 mm., 9 1 ^^^- ', length of wing, 

 (J 8 to 8-75 mm., $ 9--1 to 10 mm. 



Allied to and resembling Glossina palpalis, Bob.-Desv., but 

 browner, and usually somewhat larger; head distinctly broader, 

 front if anything slightly narrower, at least in ^ ; dark portion of 

 dorsal surface of abdomen browner (darh sepia-brown, instead of 

 clove-brown or blackish brown), paler area on second segment, instead 

 of being confined to a, usually narrow, median triangle, broad and 

 more or less quadrate or irregular in outline, its lateral margins 

 being generally ill-defined ; hypopygium of ^ buff or ocJiraceous- 

 buff', instead of grey as in typical G. palpalis ; ptollinose dorsum of 

 seventh abdominal segment in both sexes often cream-buff, and 

 consequently yellower than in G. palpalis ; extreme hind margins of 

 preceding segments (excepd posterior angles) never lighter. 



Head. — Face, jowls, and occiput coloured as in G. palpalis, but 

 sides of face (parafacials) slightly narrower, and jowls not 



* " The data here given are taken from Dr. Shircore's letter; the actual 

 locality is not stated by him. — R. N." 



t A specimen in the Museum collection with its abdomen distended by 

 coagulated blood measures 9-4 mm. in length. 



