338 Dr. C. P. Alexander on African Crane-fJien 



margined with darker brown ; no other spots or dots on the 

 membrane. 



Female. — Length abont 13 mm. ; wing 11*3 mm. 



Rostrum and palpi brown. Antennal scape dark brown, 

 the flagellum paler brown ; first scapal segment elongate- 

 cvlindrical, tlie outer face with a few long seta? ; the five 

 basal segments of the flagellum are very short and crowded, 

 the first three being united into a fusion-segment ; distal 

 flagellar segments elongate ; verticils very long and con- 

 spicuous. Head brown, strongly narrowed ])ehind ; eyes 

 protuberent ; vertex provided with long, powerful bristles. 



Mesonotal prpesciitum rich reddish brown, indistinctly 

 striped with darker brown and clothed with long semi-erect 

 hairs ; remainder of the mesonotum somewhat similar, the 

 postnotum more orange. Pleura pale brown M'ith a slight 

 greyish cast. Halteres pale brownish yellow, the knobs 

 dark brown. Legs clothed Mith conspicuous semi-erect 

 hairs ; coxae and trochanters pale brown ; femora brown 

 with a narrow while ring at about two-thirds the length ; 

 tibia3 brown, the tips very narrowly blackened ; a narrow 

 postmedial white ring and a very narrow and indistinct 

 subbasal ring that is indicated only by a few pale hairs at 

 this point ; metatarsi white, the tips narrowly blackened ; 

 second and third tarsal segments brown, the tips blackened; 

 the hist two tarsal segments brownish black : one or 

 possibly more spines at the extreuie base of the metatarsus ; 

 compared with the related L.triacunthos^ Alexander, the legs 

 are sl.orter and much more hairy, this latter possibly a 

 sexual character ; pale tibial bands narrower and much less 

 distinct. Wings subhyaliue, heavily and irregularly cross- 

 banded with brown, much more extensive than the nearly 

 hyaline ground-colour; no other spots or dots on the mem- 

 brane ; the bands are pale brown, narrowly margined with 

 darker brown ; costal cell to beyond the origin of Rs 

 darkened ; the first band includes the wing-base in cells 

 B, M, Cu and the outer three-fifths of cell 2tid A, this latter 

 connected \ ith the second ba\ul at the origin of Rs ; this 

 band runs almost straight aci'oss the wing, near the end of 

 cell M broadly connected with the third very broad band 

 which occupies the cord; the last band lies just befoie the 

 wing-tip and is connected with the band at the coid in cell 

 1st J/2, and narrowly along the costa ; the hyaline areas are 

 thus located as follows : base of cell 2n(l A ; the largest 

 before the origin of Rs, running across cells R, M, and Cu ; 

 the next largest, just before the cord in cells R and M, 

 narrowly separated by Sc from a slightly more yellowish 



