BHTMOSIA. ALLODIA. 107 



coxae and femora dark brown on underside ; hind femora dark 

 brown near tip below, middle femora less so; posterior tibiae 

 with black tips, and bearing three rows of setae. Wings yellowish 

 grey, a little more yellowish on anterior border ; tips of fork of 

 4th longitudinal vein converging, the lower branch incomplete. 

 Halteres brownish yellow. 



Length 3 millim. 



Described from one male, from Peradeniya, Ceylon, 7. viii. 10 

 (F. H. Gravely). 



Type in the Indian Museum. 



Genus ALLODIA, Winn. 



Allodia, Winnertz, Verb, zool.-bot. Ges. Wien, xiii, p. 826 (1863). 

 Brachycampta, Winnertz, /. c. p. 833. 



GENOTYPE, Mycetophila lugens, Wied. ; by Johannsen's designa- 

 tion (Gen. Ins., Ease. 93, p. 104). 



Head round, flattened in front, placed low upon the thorax, 

 front broad ; eyes round ; ocelli three in number, the laterals 

 large, contiguous to the eye-margins, the middle one very small, in 

 a groove. Palpi incurved, four-jointed, the 1st small, the 4th 

 longest. Antennae 16-jointed, the basal joints differentiated, the 

 flagellar joints cylindrical, pubescent. Thorax oval, highly arched ; 

 mesonotum with depressed hairs, only the margin setose : scutel- 

 lum large, with marginal setae. Abdomen of the male six-seg- 

 mented, with complex forceps ; the female abdomen with seven 

 segments, slender, compressed, constricted at the base, with a 

 short ovipositor, ending in two slender lamellae. Legs long and 

 slender, all tibiae with long spurs and minute lateral setje. Wings 

 shorter or not longer than the abdomen, oval, with rounded base, 

 and with microscopic setulae arranged in parallel longitudinal 

 rows. The costal vein ending some distance before the tip of the 

 wing ; auxiliary vein rudimentary ; 1st longitudinal straight, long, 

 3rd beginning about its middle, also straight; anterior cross-vein 

 moderately long, rather oblique ; the 4th longitudinal forked 

 before half its length, the branches gradually diverging ; the 5th 

 vein forks a little before 'the fork of the 4th, the branches 

 diverging ; the 6th and 7th veins incooiplete, or more or lesy 

 indistinct. 



Eange. "Western Himalayas ; and previously recorded from 

 Europe and North America. 



This genus is closely allied to Brachycampta, "Winn., and that 

 author distinguishes the two as follows : In Allodia the first anal 

 vein (6th vein), though short, is more or less distinct ; in Brachy- 

 campta it is wanting ; in the latter the fork of the 5th longitudinal 

 vein is sometimes formed as in Rhymosia, the base of the fork 

 being retracted before the proximal extremity of the anterior 

 cross-vein, while in Allodia this is not the case. 



