in the British Museum. 357 



former baud continues entirely across the wing ; small 

 brown dots at the ends of all the longitudinal veins, at r, at 

 the fork of M 1+2 , and at two-thirds the length of vein 1st A ; 

 veins pale brown, darker in. the brown areas. Venation: 

 Sc ending about opposite the fork of Rs, Sc 2 at the tip 

 of Sc x ; Rs moderately elongated, the* base with a short 

 angulation ; R 2+3 very short, about eqnal to r or a little 

 longer ; r at the tip of R x , a little before mid-length of R 2 ; 

 inner ends of cells i? 3 , i? 5 , and 1st M% in alignment; cell 

 1st M 2 short and almost square in the allotype, more rectan- 

 gular in the type, the basal deflection of Cui at about mid- 

 length j cell Mi a little longer (male) or shorter (female) 

 than its petiole. 



Abdomen dull yellow, the outer tergites indistinctly 

 darker caudally ; pleurites of the hypopygium not greatly 

 elongated. Terminal segments of the abdomen in the female 

 abruptly smaller than the others, subtelescopic ; valves of 

 the ovipositor slender, the tergal valves a little upcurved at 

 their tips. 



Hab. British East Africa, Nyasaland. 



Holotype, $ , North slope of Kenya on the Embu-Meru 

 Road, British East Africa, altitude 4500-5000 feet, February 

 13-14, 1911 (S. A. Neave). B.M. no. 1912. 70. 



Allotype, $ , Mt. Mlanje, Nyasaland, altitude 6500 feet, 

 November 11, 1913 (S. A. Neave). B.M. no. 1914. 498. 



Type in the collection of the British Museum (Natural 

 History). 



Limnophila difficilis, sp. n. 



Antennae elongate ; head light grey j general coloration 

 yellow, the mesonotal praescutum and scutum marked with 

 dark brown ; wings subhyaline, stigma indistinct ; Sex long, 

 r some distance from the tip of i? 1? cell M x lacking, cell 

 1st M 2 open by the atrophy of the outer deflection of A/ 3 . 



Female. — Length about 65 mm. ; wing 7*6 mm. 



Rostrum and palpi pale brown. Antennae moderately 

 elongated, the scapal segments obscure yellow, the flagellum 

 pale brown j the apical segments of the flagellum are broken 

 so that it is impossible to tell the exact length of the organ, 

 but from the unusually elongate structure of the flagellar 

 segments it is evident that the antennae are of a distinctly 

 elongate type ; verticils numerous, scattered along the seg- 

 ment, the "longest about equal to the segments that bear 

 them. Head light grey with yellowish setae. 



Pronotum conspicuous, pale yellow. Mesonotal prae- 

 scutum obscure yellow with four dark brown stripes, the 



