276 Records of the Indian Museum. [Vol. IV, 



tips than in that species, giving a distinct clubbed appearance : 

 hind metatarsus distinctly incrassated, the second joint of the tarsi 

 two-thirds as long as the metatarsus. (In marci, the metatarsus 

 is not at all incrassated, and is twice the length of the next joint.) 

 Spines on fore tibiae carmine tipped. 



Wings vQity pale grey, only the anterior veins dark, those on 

 hind part of wing normally pale : ist section of 3rd vein barely as 

 long as anterior cross- vein (in marci it is always distincth^ longer, 

 often twice as long). Halteres black. 



Described from a single & from Darjiling taken November, 

 1910, by Mr. D'Abreu. 



Type in Indian Museum. 



Notes. — This species is intermediate between marci, L., and 

 obscuripennis , Meij. From the former it is distinguished by the 

 black, not dark brown pubescence; the shortness of the basal part 

 of the 3rd longitudinal vein, and the incrassation of the hind 

 metatarsus. Minor differences are the lesser incrassation of the 

 hind femora, the greater incrassation of the hind tibiae and the 

 pale grey wings, as contrasted with the quite whitish wings of 

 )}iarci. 



When placed by the side of a specimen of marci, these differ- 

 ences appear sufficiently distinctive. 



From obscuripennis. Meij., it differs by its smaller size and 

 clearer wings and in the structure of the hind metatarsus, which in 

 Herr de Meij ere 's species is not distinctly incrassated and is twice 

 the length of the following joint. 



Bibio abdominalis, mihi, sp. nov. 



& 9 . Western Himalayas. Long, y-^ mm. 



Head wholly black; vertex very small, shining black, with 

 small distinct ocellar triangle. Eyes (which are densely pubescent 

 in the & with very dark brown or nearly black hair), contiguous 

 from vertex to antennae, the frontal triangle very small. Antennae 

 and palpi wholly black, moderately pubescent. 



Thorax shining black, closely pubescent; a fan-like bunch 

 of hair in front of and another one below the root of the wing. 

 Scutellum and metanotum shining black, the former with long soft 

 black hairs on posterior margin, with a tendency to curl forwards ; 

 metanotum bare. 



Abdomen shining black in cf , with close long black pubes- 

 cence ; belly similar. Genital organs confined in a hard squarish 

 segment-like case. In the $ the abdomen is normally wholly 

 reddish j^ellow, with minute sparse black pubescence ; belly similar. 

 Genital organs apparently comprised in a flat elevation on the 

 under side of the last abdominal segment.' 



1 In the type d' and $ , which still remain united, both abdomens are con- 

 siderably stretched out, as though the insects in life had endeavoured to separate 

 themselves, yet no extension of any part of the male genitalia can be seen. There 



