154 



NEMESTRINID-B. 



band interrupted in middle and with two pale side-spots ; these 

 spots occur on each succeeding segment also, and are visible, with 

 the interrupted band, through absence of tomentum ; venter pale 

 yellowish red, with a darker mark at sides of each segment. Legs 

 with coxcT, trochanters, and femora of both anterior pairs yellowish 

 red, with moderately long concolorous pubescence; tibiae fawn- 

 yellow with reddish-brown tips ; hind femora long, tliin basally, 

 thence distinctly clubbed; the thin part fawn-coloured, the 

 clubbed part reddish yellow ; last tarsal joint and pulvilli reddish 

 yellow, the other joints fawn-colour with darker tips ; claws 

 dark bro« n. 



Length, 10 mm ; wing, 11-4 mm. 



Described by Wandolleck originally from a type S from 

 Sumatra, and Lichtwardt subsequently recorded another c? from 

 Eoss I., Andaman Is., v. 1904 {Col. 0. T. Bingham). 



Type in Herr Dohrn's collection at Stettin; the second speci- 

 men in the British Museum. 



Genus ATRIADOPS, Wand. 



Atriadops, Waudolleck, Ent. Nach. xxiii, p. 245 (1897). 



Colax, Wiedemann {nee Hiibner, 181G), Aiialec. Ent. p. 18, pi. i, 



fig. 8 (1824); id., Auss. Zweifl. ii, p. 260, pi. ix, fig-. 11 (1830) ; 



Macquart, Dipt. Exot. ii. pt. 1, p. 34, pi. iii, fig, 2 (18J0) ; 



Westwood, Cab. Orient. Entoiu. p. 38, pi. xviii. Mo-. 5 (1847) ; 



Walker, Ins. Saund., Dipt. pi. v, fig. 4 (1850). 



Genotype, Colax javana, Wd., or C. macula, Wd.* 



Moderate-sized species w'ith peculiar tomentose-iike pubescence 

 and dark-coloured and spotted wings. Epistome ffistrid-like ; eyes 

 in (S subcontiguous for a short space ; ocelli absent ; proboscis 

 not obvious, if projecting from mouth-opening, hidden in the long 

 hair of the face ; antennas 3-jointed, much as in Uirmoneura. 

 Thorax subquadrate, rather broader than long ; abdominal seg- 

 ments somewhat puckered-up just before the hind margins, forming 

 a blunt ridge ; genitalia in S short, tip with a broader base, in $ 

 longer with sabre-shaped lamellse. Hind femora slightly thicker ; 

 first and last tai-sal joints each as long as remaining three together. 

 Wings with auxiliary vein short, ending free at about opposite 

 origin of 4th vein ; 1st longitudinal and greater portion of vein 

 " diagonal " considerably thickened ; 3rd vein forked ; 4th vein 

 forked, anastomosed as usual for some distance with 3rd ; lower 

 prong of upper branch not always reaching wing-margin ; f anal 

 cell open, axillary vein present ; thoracic squamae well developed ; 

 two submai-ginal and four posterior cells, 1st sometimes divided 



* Both originally described together on the same page. I cannot pex-- 

 sonally decide and have seen no species set up as genotype. 



f It does not do so in tlie one example of A. javana that I have seen, but 

 Waudolleck fignres it running to the wing-margin, with also a short cross-vein 

 Velween it and the rein in front (Ent. Nach. xxiii, p. 246, fig. 1, 1897). 



