494 Annah of tlie 8<n<th African, Museum. 



Natal, Durban (H. W. Bell-Marley), 1 3 ', S. Afric. Museum; 

 Nigeria ; aiid Nyassaland, Mt. Mlanje, $ and 9 > Entom. Res. Comm. 



This species must not be mistaken for T. decidua Pand., which I 

 have received also from Cape Town. In the $ of the latter, the head 

 and orbits are ashy white, the latter are as wide as the narrowed frontal 

 baud ; the hypopygium has no rufous hairs under the forceps. 



GEN. TRICHOLYGA Bond. 



TBICHOLYGA IMPEXA, u. sp. 



In the collection of the Hofmuseums of Vienna is a $ example 

 collected on December 15th, 1896, by Dr. H. Brauns at Uitenhage, Cape 

 Colony. In this $ , the 1st segment of the abdomen is fuscous, 

 segment 2 flavescent or whitish and intersected by a black medio- 

 dorsal line ; on segment 3, which is twice as long as the 1st, is a 

 narrow ashy line running along the anterior border and interrupted in 

 the centre, the remainder of the segment is at first moderately bright 

 black with a faint coppery tinge, and after that darkened by very 

 numerous moderately long hairs, closely set and appressed ; segment 4 

 short and black, shining as if varnished. Hypopygium retracted and 

 without a brush of rufous hairs under the forceps. Thorax ashy grey, 

 slightly flavescent, barred with the usual 4 lines ; 4 dc., st. = 2 + 2. 

 .Scutellum wholly fuscous. Head ashy white, orbits with a flavescent 

 tinge ; 45 long, spaced frontal setae descending on the genae as far as 

 the middle of the epistome or a little beyond ; 3 shorter but rigid setae 

 hang over the large vibrissae. Antennae long, brownish ; 3rd joint 4 

 times the length of the 2nd ; the 2nd joint of the similarly coloured 

 antenual chaeta elongate. Palpi yellow, a little infuscate in their 

 outer face. Wings ample, hyaline, pale yellow at the base ; 2 ciliae 

 at the base of the 3rd nervure ; no costal spine. Squamae somewhat 

 yellowish, halteres obscure, testaceous at base. Legs black. 



Length 9 mm. 



I have received from M. J. Bequaert a $ of the same species from 

 the Congo. It differs merely in the palpi, being fuscous and rufous 

 at apex, and in having a wide posterior band on the 2nd abdominal 

 segment. 



MYXARCHICLOPS, n. gen. 



This genus belongs to the section Bmimhaueria B. B. Frons very 

 wide in both sexes (more than twice the diameter of the eye). In 

 addition to having the frontal setae crossed, the orbits are planted with 



