African I'hfebolumic Dipttra. 3.'i'J 



Abdomen: dorsum clotlicd with hlack hair, second and third 

 BP^nieuUs each with a band of [>aU>, Hiiining, whitish-yellow 

 hair on hind border; ventral surface of second and third 

 8C«;mtMits clothed with shiniu}^ whitish-yellow hair and with 

 a patch of black hair in each anterior anfjlc; venter clothed 

 elsewliere with l)lack hair, ll'mys : stij^ina ochre-yelhjw, 

 veins ochraceons, fourth atid sixth and distal extremities of 

 other ionf^itiulinal veins brown. Sijuama butt'. Hnlteres 

 cream-buff, stalks ochraccous-bufF. Legs : femora, tarsi, 

 anterior surfaces of front and hin<l tibirc and of distal extre- 

 mities of niitldle tibiaj clothed with black hair, legs elsewhere 

 clothed with pale yellowish hair. 



Xyasaland Protectorate: Zoniba District, 190L> {Dr. S. K. 

 Nurris) . 



So far, at any rate, as may be jiulged froni the male, 

 Dorcalcemus bicolor, owing to its coloration and narrow and 

 elongate body, is readily distinguishable from any other 

 species of its genus at present described. 



Genus Pa.ngo.ma, Macq. 



Pangonia bubsequa, sp. n. 



? . — Length (2 specimens) 16 to 17"2 mm. ; width of 

 head 52 to 58 mm. ; width of front at vertex just under 

 1 mm. ; distance from upper margin of occiput to anterior 

 extremity of face 4'4 to 40 mm. ; length of prol)oscis 7"2 to 

 y mm. ; length of wing 11 to IG'4 mm. ; greatest width of 

 wing 5 to 5"() mm. 



Allied to Pangonia ohlii, Austen, from v:hich it may be 

 distinguished by the taicny-uchraceous area on the dorsum of 

 the abdomen being confined to the first (i. e. first visible) seg- 

 ment, which contrasts sharply with the following segments in 

 colour, and by the absence of a {more or less complete) trans- 

 verse band of silvery-white hair on the hind borders of the 

 second and fourth abdominal segments. — Thorax olive-brown, 

 dorsum when viewed at a low angle from behind appearing dull 

 saffron-yellow pollinose ; first [visible) segment of abdomen 

 tawny ochraceous, second segment dark mummy -brown, third 

 to sixth segments inclusive clove-brown, sixth and seventh 

 segments yellowish pollinose and clothed with Xaj/les-yclloiv 

 hair, lateial margins of fourth and fifth segments and hind 

 border of fifth segment {more or less completely) clothed with 

 yellowish hair ; wings brownish, extreme base and costal cells 

 mummy-brown ; femora dark brown at base, then chestnut or 



23* 



