African Phlehotomic Dlptera. 355 



sixth sofrments clotlied with l)nght orange-ochraceous or 

 ochrc-yellow liairs, uhich on fifth segment, on and towards 

 posterior angles, are sometimes mixed with or replaced by 

 ■white liairs ; black area of dorsum of third and three 

 following segments clothed with minute, appressed, black 

 hairs; dorsum of seventh segment greyish black and clothed 

 for most part with black hairs, sometimes mixed with 

 yellowish hairs on liind margin and replaced by ochrc-yellow 

 hairs on each side; ground-colour of ventral surface of abdo- 

 men corresponding to that of dorsum, except in case of third 

 segment, which is as described in diagnosis ; ventral scutes of 

 second and two following segments each with a transverse 

 band of appressed silvery-Avliite hairs*, which may be re- 

 placed by ochreous hairs in and adjacent to centre line ; on 

 ventral scute of second segment this band of pale hairs 

 occupies distal two-thirds of segment, but on ventral scutes 

 of third and fourth segments the band of pale hairs is far less 

 deep, occupying less than, or at any rate not more than, 

 distal half of scute in each case ; ventral scutes of fifth and 

 following segments clothed with black hair, which, however, 

 on the hind borders is usually replaced, entirely or in part, 

 by ochreous or whitish hair. Wings : veins for most part 

 ochraceous or tawny ochraceous, appendix to base of anterior 

 branch of third longitudinal vein showing considerable indi- 

 vidual variation in length, even frequently varying in this 

 respect in the two wings of the same specimen ; stigma, 

 when developed, ochre-yellow, narrow, and elongate. Squanioi 

 cream-buff, porcelain-like. Halteres : stalks buff, brown at 

 distal extremity on upper side ; knobs yellowish cream- 

 coloured, brownish at base. Legs : coxae grey, clothed with 

 yellowish or greyish hair; femora black and clothed with 

 hair of same colour ; tibire, tarsi, and extreme tips of femora 

 cream-buff or buff, tibiae dark brown or brownish at or close 

 to distal extremities, last joint of all tarsi usually dark 

 brown, at least with exception of extreme base, tips of other 

 tarsal joints for most part brown or brownish ; front and 

 middle tibise clothed with short, appressed, and glistening, 

 cream-coloured hair, hind tibise clothed with more out- 

 standing and somewhat longer hair of the same colour. 



* In the case of one of the para-lypes of this species, the ventral scute 

 of the third abdominal segment is entirely clothed with appressed ochre- 

 yellow or pale yellow hair, while the ventral scutes of the aecond and 

 fourth segments, with the exception of their fore borders, are similarly 

 clothed ; in this specimen, too, the hind margins of the Teutrul scutes of 

 the fifth and sixth abdominal segments are clothed with orange-ochra- 

 ceous hair at and near each extremity. 



