148 E. E. AUSTEN. 



clothed with minute, appressed, glistening, yellowish white hairs, fore border and 

 lateral extremities clothed with black hairs. Wings : transition from orange- 

 yellow proximal to mummy-brown distal portion sharply marked, at least in case 

 of type. Squamae ivory-yellow, Halteres ochraceous bufi, stalks and knobs 

 towards base brownish. Legs : coxae and femora dark brown or blackish brown, 

 clothed with black hair, which on under side of hind femora is mixed with a certain 

 number of minute, glistening tawny hairs, and on anterior surface of front coxae 

 with a few golden hairs ; tibiae and tarsi russet, clothed for most part with minute, 

 appressed, glistening, ochraceous tawny hairs, last three joints of tarsi dark brown 

 above. 



Angola (J. J. Monteiro). 



Pangonia discors resembles and is closely allied to the East African P. beckeri, 

 Bezzi, but is readily distinguishable owing to, inter alia, its more prominent face and 

 narrower upper part of the front, the entire absence of white hair on pleurae, postalar 

 calU and front coxae, and the distal portion of the abdomen being entirely black and 

 covered with black hair, instead of having the tip ochraceous tawny and clothed 

 with glistening ochraceous orange or ochreous hair. 

 Pangonia lautissima, sp. n. 



(5^2. — Length, (J (9 specimens) 17 to 19 mm., 5 (3 specimens) 16 to 17'4 mm. ;. 

 width of head, (J just under 5 to 5'4 mm., 5 5 to 5*6 mm. ; width of front of $ at 

 vertex just under 1 to 1*2 mm. ; length of proboscis, ^ just under 4 to 4*25 mm.> 

 9 3*4 to 4'2 mm. ; length of wing, (J 14 to 15*2 mm., 5 14 to 15*6 mm. 



Shining black ; basi-occipital region clothed and lower halves of posterior orbits 

 fringed with orange-bnff hair, and patches of similarly coloured hair on pleurae ; 

 wings with base and a deep anterior border extending to end of third costal cell ochraceous 

 orange, and remainder of surface uniformly brownish black, with a strong purplish 

 metallic sheen. 



Head black, frontal triangle in (^ and region of subcallus (area immediately above 

 bases of antennae) in 5 shimmering silvery white pollinose, a similar polHnose 

 patch (clothed with a few whitish hairs, and usually more distinct and sharply 

 defined in ? than in (J) on each side of upper part of face in both sexes ; face in both 

 sexes tumid below antennal prominence, then indented or somewhat receding, not 

 produced into a nose-like prolongation, front in $ deeply furrowed ; occiput palhd 

 neutral grey pollinose, clothed with whitish hair, posterior orbits silvery white, 

 their upper halves fringed behind with minute blackish hairs ; palpi and antennae 

 black, proximal joints of both sparsely clothed with short, black or blackish hairs, 

 third joint of antennae from certain aspects appearing dark olive-grey, mouse-grey 

 or brownish grey polHnose. Thorax : dorsum including scutellum clothed with 

 short black hair, humeral calU inconspicuously neutral grey pollinose and clothed on 

 sides in front with pale orange-buff hair, postalar calli fringed posteriorly below with 

 orange-buff hair ; pleurae on each side with a thick tuft of orange-buff hair below 

 humeral callus, and more posteriorly with two further tufts of similar hair arranged 

 somewhat in the shape of a wide V, of which the anterior branch fringes the hind 

 margin of the mesopleura, while the posterior runs back to the squamae ; pleurae 

 except as stated, and pectus except in front of front coxae clothed with black hair, 

 pectus in front of front coxae neutral grey pollinose, clothed with pale orange-buff 



