354 Dr. C. P. Alexander on African Crane-flies 



yellow with three dark brown stripes, the long median stripe 

 broadest in front, barely attaining the suture ; pseudo- 

 sutural foveas dark brown, conspicuous ; no evident tuber- 

 culate pits ; scutum with the lobes dark brown ; median 

 area of the scutum and the scutellum pale brownish yellow ; 

 postuotum greyish-pruinose. Pleura yellow. Halteres pale 

 brown, the knobs broken. Legs with the coxae and tro- 

 chanters yellow'; femora brownish yellow : remainder of the 

 legs pale brown, the tips of the femora and tibiae scarcely 

 darkened. Wings with a greyish-yellow tinge ; stigma 

 oval, brown ; very diffuse, extensive grey clouds at the 

 origin of Rs, along the cord and outer end of cell 1st M 2 ; 

 veins dark brown. Venation : Sc long, Sc x ending nearly 

 opposite or slightly before mid-length of R 2+z ; Sc 2 at the 

 tip of Sci ; r at the tip of Ri and on R 2 a little before mid- 

 length of the vein ; Rs long, gently arcuated at origin ; 

 R 2+ z shorter than cell 1st M 2 ', basal deflection of 7? 1+5 and 

 r—m subequal ; petiole of cell M x a little more than one-third 

 the length of the cell ; basal deflection of Cu\ at or beyond 

 mid-length of cell 1st M 2 . 



Abdominal tergites dark brown, paler basally, distinctly 

 ringed caudally with yellow to give the tergites an annulated 

 appearance ; sternites more uniformly yellowish. Ovipositor 

 with the tergal valves long and slender, gently upcurved. 



Hub. British East Africa. 



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

 1912 (R. B. Woosnam). B.M. no. 1914. 2. 



Paratopotypes, 2 ? , one pinned on the same pin as the 

 type-specimen of Erioptera subirrorata. 



Type in the collection of the British Museum (Natural 

 History) . 



Limnophila diffusa is generally similar to L. distigma, but 

 is readily told by the wing-pattern and slightly different 

 venation, especially the longer R 2 which is bent at about 

 mid-length toward the wing-apex, so that cell 2nd R 1 is 

 nearly three times as wide at the wing-margin as is cell 7?o ; 

 R 2+3 is much shorter and less arcuated. 



Limnophila abyssinica, sp. n. 



General coloration shiny black ; legs black, the femoral 

 bases yellow ; wings yellowish, the veins heavily seamed 

 with brown ; abdomen black, the hypopygium reddish. 



Male. — Length about 8 mm. ; wing 8 mm. 



Rostrum and palpi black. Antennas with the scape black, 

 the first segment very long, cylindrical ; flagellum broken. 



