138 STKPHID.U. 



yellowish, with silky reflexions ; hair on the third antennal joint 

 of a dark grey colour ; rudiment of the arista reddish ; proboscis 

 pale yellow ; head below clothed with long whitish hair. Thorax 

 and scutellum entirely black, punctate, with rather long but slant- 

 ing pale yellow pubescence ; front part of the pleuras with rather 

 long, erect, whitish hair, hind part bare ; scutellum semicircular, 

 with a faintly marked median longitudinal furrow. Metanotum 

 shining black. Squamulae white, with short white fringes ; halteres 

 pale yellowish. First segment of the abdomen black, with a 

 narrow yellow hind border on each side ; second entirely yellow ; 

 third yellow, with a broad rounded black spot on each side, which 

 reaches the fore border but not the sides ; fourth black, with 

 lateral borders narrowly yellow, and also bearing a triangular dark 



Fig. 2T.Ptilobactrum neavei, sp. n., tf. 

 Head in profile, X 7. 



yellow median spot at the distal extremity ; abdominal pubescence 

 very short, whitish, but black along the middle line ; belly black, 

 yellowish pubescent ; genitalia black. Legs bare, the femora 

 shining, the tibia? whitish - dusted ; coxae and hind trochantcrs 

 black ; femora and tibiae yellow, the latter with a blackish spot 

 above at tip; tarsi broad and flat (especially the front pair), black, 

 with yellowish pubescence ; first joint of hind tarsi not thickened ; 

 claws black, pale at the base ; pulvilli yellow. Wings hyaline, 

 shining, with a faint pale yellowish tinge ; veins yellow, more or 

 less darkened outwards ; vena spuria very faintly marked. 



Type c? , a single specimen from British East Africa, Upper 

 Nzoia River, 5,100-5,400 ft., 5-7. vi. 1911, collected by S. A. Neave, 

 in whose honour this strange and beautiful insect is named. 



Genus 27. CERIOIDES, Rondani (1850). 



Of this genus there are in the collection only six specimens, 

 which, however, belong to five different species or varieties. The 

 Ethiopian species of Cerioides at present known, some of which 

 were very recently described in a valuable paper of Prof. Herve- 

 Bazin. number thirteen. 



