﻿106 ERNEST E. AUSTEN — NOTES ON AFRICAN BLOOD-SUCKING MIDGES 



fourth longitudinal vein, the other spot also resting on costa and covering distal 

 extremity of third longitudinal vein, but not reaching anterior branch of fourth 

 longitudinal vein. 



Head dark mouse-grey above, sparsely clothed with brownish hair ; palpi and 

 antennae isabella-coloured, sixth and following joints of antennae more or less 

 cylindrical ; proboscis dark brown. Thorax : metanotum mummy-brown or 

 sepia-coloured. Wings : first and third longitudinal veins connected together for 

 a short distance just before former turns towards costa, dark brown except 

 portions included in the cream-coloured spots ; fourth longitudinal vein bifurcating 

 a little beyond middle of wing ; on hind border a trace of an ill-defined pale spot 

 sometimes distinguishable between the rami of the fifth longitudinal vein ; distal 

 extremity of wing sparsely clothed with minute hairs, which are most numerous 

 next costa, beyond distal extremity of third longitudinal vein ; there are also two 

 longitudinal rows of similar hairs between distal extremities of the rami of the 

 fourth vein, and another and longer row in front of the anterior ramus of this 

 vein, while the distal extremities of the rami of the same vein each bear a few 

 hairs arranged in a single row. Legs pale isabella-coloured, femora brownish, 

 with a pale band before the tips ; knees sepia-coloured ; extreme tips of hind 

 tibiae brownish. 



East Africa Protectorate : type and one other specimen (para-type) 

 from the Yala River, on the southern edge of the Kakumega Forest, 

 4,800-5,300 ft., 21-28. v. 1911 (S. A. Neave : presented by the Entomological 

 Research Committee). The following note by Mr. Neave is attached to the 

 type : — " Biting my hand at light, 7.30 p.m." 



This is the first species of Johannseniella to be described from the Ethiopian 

 Region. 



Genus Ceratopogon (Subgenus Forcipomyia (Mg.), Kieffer), Mg. 

 Ceratopogon castaneus, Walk. 



Ceratopogon castaneus, Walker, List. Dipt. Ins. in coll. Brit. Mus., Part I, 

 p. 26 (1848). 



An examination of the type and para-type of C. castaneus — obtained in Sierra 

 Leone {Rev. D. F. Morgan) and presented to the British Museum so long ago 

 as 1838 — shows that while the generic position was quite correctly determined 

 by the describer, the species belongs to the subgenus Forcipomyia, as characterised 

 by Kieffer (Wytsman's i Genera Insectorum,' Diptera, Fam. Chironomidae, p. 49 

 (i906) ). 



In April, May, and July, 1909, females of this species were collected at Yaba, 

 Lagos, Southern Nigeria, by Dr. W. M. Graham, W.A.M.S., by whom they 

 were subsequently presented to the National Collection. A study of this 

 material renders it possible to supplement Walker's extremely brief description 

 as follows : — 



Q. — Length (5 specimens) 1*4 to 1*6 mm., length of wing 1*2 to 1*4 mm. 



Head, dorsum of thorax (including metanotum), and dorsum of abdomen dark 

 sepia-brown ; vertical region of head, dorsum of thorax (except metanotum), and 

 dorsum of abdomen clothed with dark brown or blackish hair, mixed on thorax 



