﻿(family chieonomidae, subfamily ceratopogoninae), &c. 107 



and abdomen with minute, glistening ochraceous hairs ; scutellum fringed with 

 long, dark brown hairs ; pleurae and pectus buff or cream-buff, ventral surface of 

 abdomen (when not darkened by the presence of food in the alimentary canal) 

 similarly coloured, though ventral scutes of third and three following abdominal 

 segments with a small brown fleck on each side. Wings densely clothed with 

 dark brown hairs, which are darker on anterior margin than elsewhere ; extreme 

 base of wings, and a small but conspicuous spot about middle of anterior margin 

 cream-buff. Legs pale yellow, clothed with similarly coloured hairs ; land femora 

 with a narrow but conspicuous sepia-coloured band at about two-thirds of their length 

 from the base; tarsal joints somewhat infuscated, at least in part; first joint of 

 hind tarsi about one-third shorter than following joint. 



The dates on which Dr. Graham's specimens were captured are — ll.iv.1909, 

 14.iv.1909 (two examples), 23.V.1909, and 14.vii.1909 : the specimen taken on 

 May 23rd was caught in the donor's bedroom at 9.0 p.m., all the others were 

 collected in the veranda of his bungalow at the same hour. 



So far as the present writer is aware, no species belonging to the genus 

 Ceratopogon as restricted by Kieffer (i.e., consisting solely of the species comprised 

 in the subgenera Atrichopogon, Ceratopogon, and Forcipomyia) is definitely known 

 to suck the blood of Vertebrates. It is therefore interesting to note that in the 

 case of the type-specimen both of C. castaneus, and of the larger of the two 

 new species described below, the abdomen, judging at least from an external 

 examination, is distended apparently by coagulated blood. 



Ceratopogon incomptifeminibus, sp. n. 



Q. — Length (two specimens), 1*4 mm. ; length of wing, 1 mm. 



Presenting a close superficial resemblance to the foregoing species, but distinguish- 

 able by the hind femora being ivithout a sepia-coloured band. 



Head dark brown, clothed with dark brown or brownish hair ; palpi and 

 proboscis mummy-brown ; antennae light mummy-brown, last five joints clothed 

 with pale yellowish hairs, verticillate hairs dark brown. Thorax : dorsum dark 

 sepia-brown, clothed with ochraceous hair ; pleurae and pectus cream-buff, 

 streaked with mouse-grey ; metanotum clove-brown. Abdomen : dorsum dark 

 mummy-brown (extreme base and penultimate segment paler), clothed with 

 yellowish hair ; venter mainly cream-buff. Wings as described above in case of 

 foregoing species. Halteres cream-buff, base of knobs slightly darker. Legs 

 pale yellow, clothed with similarly coloured hairs ; hind femora witlwut a sharply 

 defined sepia-coloured band at about two-thirds of their length from the base, but 

 with their distal extremities mummy-brown on upper surface ; first joint of hind 

 tarsi slightly (about one-fourth) shorter than following joint. 



Ashanti : Obuasi, 23.iv.1906 (Dr. W. M. Graham, W.A.M.S.). 



Ceratopogon inornatipennis, sp. n. 



Q. — Length (one specimen), 2 mm. ; length of wing, 1'6 mm. 



Distinguished from the two preceding species by its much larger size, by the costal 

 margin of the wings being entirely devoid of a light spot, and by the much greater 

 length of the second joint of the hind tarsi, which is about twice as long as the first 

 joint. — Dorsum of thorax olive, clothed ivith bright, Naples-yellow hairs ; dorsum of 



