4 Dr. 0. P. Alexander on African Crane-flies 



brown; tarsi brown; claws slendei', uutoothed. Wings 

 hyaline, iridescent, with small brown spots arranged as 

 follows : at the origin of Rs ; fork of Sc ; tip of i?j and on 

 r ; vei'y narrow and indistinct seams along the cord and 

 outer end of cell 1^^ M^ and a conspicuous spot at the end 

 of vein 2nd A ; veins slender, dark brown. Venation : 8c 

 rather short, Sci ending a short distance beyond the origin 

 of Rs ; Sc2 at the tip of Sci ; Rs strongly angulated and 

 spurred at origin ; r at the tip of R^ ; basal deflection of 

 i?^_^r about equal to the basal deflection of iWi+o 5 cell Is/ M2 

 large, rectangular, about as long as vein Mi_^2 beyond it ; 

 m a little shorter than the outer deflection of M^ ; basal 

 deflection of Cui at or just beyond the fork of M. 



Abdomen pale brownish yellow, the tergites with a broad- 

 triangular brown band at the caudal margin of segments 

 one to six, smallest on the sixth segment. Ovipositor with 

 the tergal valves very tiny, slender, strongly upcurved, the 

 tips acute ; sternal valves brown, the bases blackened, very 

 long and powerful, gently upcurved, the tips broad, obliquely 

 truncated, and minutely angulated. 



Hub. British East Africa. 



Holotype, ? , Kericho, altitude 5500 feet, November 1, 

 1912 {R. B. PVoosnam). B.M. No. 1914. 2. 



Type in the collection of the British Museum (Natural 

 History). 



The species is dedicated to the collector, Mr. R. B. 

 Woosnam. 



Genus Limnobia, Meigen. 



Lhnnobia trichoptera, sp. n. 



Head black ; antennae black, the verticils unusually long; 

 pronotum and mesonotum with a broad, median, black 

 stripe ; prsescutum with brown latei'al stripes ; femora with 

 one or two yellow rings before the tip ; wings pale brown 

 Avith darker costal markings and numerous small, pale 

 yellowish, subhyaline areas in all the cells; distal cells of the 

 wings with numerous macrotrichia ; r at the tip of i?i, basal 

 deflection of Cui before the fork of M. 



Male. — Length 7*5 mm. ; wing 9*5 mm. 



Female. — Length about 7'5 ram. ; wing 9"8-10 mm. 



Kostrum and palpi dark brownish black. Antenna} black, 

 the flagellar segments elongate, attenuate, with very long 

 delicate verticils. Head deep velvety black. 



Pronotum velvety black. Mcsonotal pra^scutum light 



