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



yellow with three dark broAvn stripes, the lono^ median stripe 

 broadest in front, barely attaining the suture ; psendo- 

 sutural foveae dark brown, conspicuous ; no evident tuber- 

 culate pits ; scutum with the lobes dark brown ; median 

 area of the scutum and the soutellum pale brownish yellow ; 

 postnotum orreyish-prninose. Pleura yellow. Halteres pale 

 brown, the knobs broken. Lej>:s with the cox-,« 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 Id M^ ; 

 veins dark brown. Ve'uation : Sc long. Sci ending uearly 

 opposite or slightly before mid-length of R2+?. ; 80-2 at the 

 tip of Sci ; r at the tip of i?i and on R.j a little before raid- 

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

 R2+8 shorter than cell 1st M^ : basal deflection of R^^^ and 

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

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

 mid-length of cell \st Mo. 



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. 



Hab. British East Africa. 



H'>Iofype, ? , Kericho, altitude 5500 feet, November 1, 

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



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

 type-specimen of Erioptera suhirrorafa. 



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^ is 

 nearly three times as wide at the wing-margin as is cell Ro ; 

 R2+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 hypopygiuni reddish. 



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



Rostrum and palpi black. Antennae with the scape black, 

 the first segment very long, cylindrical ; flagellum broken. 



