34 



A Monograph of Culicidae. 



yellow line ; scutellum and metanotura pale brown ; pleurae pale 

 ochreous brown. 



Abdomen brown, ochreous ventrally, with pale brown hairs, 

 most dense on the venter. 



"Wings with the costa jet black, with two prominent, rich 

 yellow spots on the apical half ; apex of wing yellow ; first long 

 vein yellow with a black spot near the apex under a small apical 

 black costal spot, traces of two smaller ones nearer the base ; 

 subcostal black ; second long vein yellow with a black spot on 

 both branches of the fork- cell just under the black spot on the 

 first long vein ; third long vein all yellow, with a minute apical 

 black spot, and another minute one at its base just past the 

 cross- veins ; fourth long vein yellow with two dusky spots on the 

 upper and one on the lower branches of the fork-cell, and a few 

 on one side of its stem ; fifth long vein yellow, a few black scales 

 at the base of the upper branch, and a trace of an apical spot ; 

 sixth yellow with a black median spot ; fringe black with yellow 

 spots at the junction of all the veins with the border and the 

 greater part of the fringe from the sixth vein to the base yellow ; 

 first sub-marginal cell longer and narrower than the second 

 posterior cell, its base nearer the base of the wing, its stem 

 slightly more than half the length of the cell ; stem of the second 

 posterior cell nearly as long as the cell ; supernumerary and 

 mid cross-veins in one line, posterior cross-vein about its own 

 length distant behind the mid. Halteres with pale stem and 

 fuscous knob. 



Legs brown with very narrow apical yellow bands. 



Length. — 4*5 to 5 mm. 



Habitat. — Baro and Pibor ; also on the Jur and at Meshra 

 (Dr. Balfour and Colonel Penton), and Aden Hinterland (Captain 

 Peyton, I.M.S.). 



Observations. — Described from several females, but all have 

 been slightly damaged, the wings are very characteristic and 

 approach nearest to Giles's Anopheles gigas from India. 

 Dr. Balfour states that " it boarded the steamer in the evening 

 at Baro and bit freely." 



There is variation in the wing marking, especially in the size 

 of the black spots on the wing field. It is abundant on 

 the Baro. 



Fresh specimens of this species have been taken by Colonel 

 Penton on the Jur and at Meshra. 



It has also occurred in the Aden Hinterland, specimens 



