﻿124 ERNEST E. AUSTEN — NEW AFRICAN 



margins and posterior angles of fifth and sixth segments clothed with white hairs ; 

 dorsum of abdomen, except as stated, clothed with short, dense, black hair ; 

 ventral scutes of first and second segments grey, second segment clothed with 

 glistening white hair and its ground colour sometimes greyish-buff at base, hind 

 border of ventral scute of third segment with a few glistening white hairs on 

 each side, ventral scute of fourth segment grey and clothed except in middle 

 with glistening white hairs, ventral surface of abdomen, except as stated, black 

 and clothed with black hair. Wings : extreme base, first and second costal cells, 

 distal extremity of third costal cell, stigma, and anterior margin of first basal cell 

 ochreous. Squamae cream-coloured, borders cream-buff. Halteres: knobs sepia- 

 coloured, stalks somewhat paler. Legs : coxae grey, clothed with greyish-white 

 hair, femora, tibiae, and tarsi clothed with black hair. 



East Africa Protectorate: Eabai, 15. iii. 1912 (S. A. Neave: presented 

 to the National Collection by the Entomological Research Committee). 



The following field-note has been supplied by Mr. Neave : — " The three 

 individuals of this small black Pangonia. were taken on a forested hill near Rabai, 

 at an altitude of about 600 ft. Two specimens were captured about 10 a.m., 

 within a few yards of each other. In spite of a careful search, no others were 

 even seen during the day, with the exception of the third individual, which was 

 caught about 2 p.m., on the identical spot where the others were found." 



Pangonia comata cannot be confused with any other African species of 

 Pangonia at present known. Owing to the shortness of its face and the absence 

 therefrom of shining calli, its affinities would appear to be with the group formed 

 by the South African Pangonia conjuncta, Walk., P. angulata, Fabr., and P. 

 alboatra, Walk., from all of which, however, it may at once be distinguished, 

 apart from other characters, by its much smaller size and by the nature of the 

 hair on the abdomen, which, instead of being exceedingly short and appressed, is 

 longer, upstanding, and furry. 



Genus Dorcaloemus, Austen. 



Dorcaloemus silverlocki, sp. n. 



Q. — Length (2 specimens) 13 to 13*5 mm.; width of head 4 to 4*2 mm.; 

 width of front at vertex 0*6 mm. ; distance from upper margin of occiput to 

 anterior extremity of face 3*25 mm. ; length of proboscis just under 4*5 mm. ; 

 greatest width of abdomen (across base of second segment) 5*2 mm. ; length of 

 wing 10*25 to 11 mm. 



A relatively narrow-bodied, elongate species, in shape resembling Dorcaloemus 

 bicolor, Austen. — Face short ; dorsum of thorax blackish slate-coloured, with a 

 greyish bloom, and clothed with ochre-yellow hair mixed with blackish hairs ; dorsum 

 of abdomen ochraceous or tawny -ochraceous {first segment greyish cream-buff) with 

 black markings, and clothed, with short, appressed, glistening orange-ochraceous hair ; 

 icings ochreous, distal third and hind border somewhat darker ; femora black, tibiae, 

 tarsi, and extreme tips of femora cream-buff. 



Head light grey, a roughly triangular area on each side, occupying lower part 

 of sides of face and anterior portion of jowls clove-brown ; frontal callus large, 

 bluntly sagittate and shining black, narrowly separated from eye on each side 



