170 MR. WALKER ON DIPTEEA COLLECTED AT MAKESSAR. 



Anteunae very short ; third joint nearly round ; arista very minutely 

 pubescent. Thorax solid, apparently hornj', very minutely pubes- 

 cent ; scutellum small ; metathorax elliptical, enormously developed, 

 covering the whole abdomen, sheltering the wings when in repose. 

 Legs short, stout ; femora slightly incrassated ; tibiae curved. Wings 

 concealed beneath the metathorax. 



231. NoMBA TECTA, n. s. Mtts et Foem. Nigra, obscura, antennis 

 pieeis, tarsis flavis apice nigris, alis cinereis. 



Male and Female. Black, dull ; antennae piceous ; tarsi yellow, with 

 black tips ; wings grey ; veins black. Length of the body H-lf line ; 

 of the wings 2^-3 lines. 



Subfam. Htdromtzides, Haliday. 

 Gen. NoTiPHiLA, Fallen. 



232. NoTiPHiLA LINEOSA, n. s. Mas et Fcem. Fusca, obscura, ca- 

 pite apud oculos linea frontali et epistomate albidis, arista plumosa, 

 thorace lineis sex albidis, abdomine nigro segmentorum marginibus 

 fulvis, pedibus nigris, tibiis anticis genubus tarsis halteribusque fulvis, 

 alis cinereis. 



Male and Female. Brown, dull ; head whitish about the eyes, and with 

 a whitish line on the front ; epistoma whitish ; antennae not near 

 reaching the epistoma, 3rd joint elongate, arista thinly plumose ; 

 thorax with six whitish lines, the lateral pair incomplete ; abdomen 

 black, not longer than the thorax, hind borders of the segments tawny ; 

 legs black, tarsi, knees, posterior tibiae at the tips, and fore tibiae tawny ; 

 winjjs grey; veins black; discal transverse vein straight, upright, 

 parted by more than its length from the border, and by full thrice its 

 length from the prjebrachial transverse ; halteres tawny. Length of 

 the body l|-2 lines ; of the wings 3J-4 lines. 



The two following species belong to the group of which A''. Cinerea is the 

 type. 



233. NoTiPHiLA QUADRiFASCiA, u. s. Fosm. Fusca, subtus cinerea, 

 capite autico amplo, facie convexa, antennis nigris, arista plumosa, 

 metathorace abdominisque maculis duabus basalibus fasciisque quatuor 

 albidis, genubus tai'sisque rufescentibus, alis cinereis puncto costali 

 nigro, halteribus testaceis. 



Female. Brown, cinereous beneath ; head large and somewhat tumid 

 in front and beneath ; face cinereous, convex ; antennae black, very 

 small, 3rd joint conical, arista plumose ; metathorax whitish ; abdo- 

 men with a whitish spot on each side at the base, and with four 

 whitish bauds, of which the 3rd and 4th are interrupted ; legs cinereous 

 black, knees and tarsi reddish ; wings grey, with a black costal point 

 at the tip of the subcostal vein ; veins black ; discal transverse vein 

 oblique, nearly straight, parted by less than half its length from the 



