170 MR. WALKER ON DIPTERA COLLECTED AT MAKESSAR. 
Antennae very short ; third joint nearly round ; arista very minutely 
pubescent. Thorax solid, apparently horny, 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. Mas et Fcem. Nigra, obscura, antennis 
piceis, 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 1£-1§ line ; 
of the wings 2£-3 lines. 
Subfam. Hydromyzides, Holiday. 
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 w'hitish 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 ; 
wings 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 pncbrachial transverse ; halteres tawny. Length of 
the body lf-2 lines ; of the wings 3J-4 lines. 
The two following species belong to the group of which N. Cinerea is the 
type. 
233. Notiphila ouadrifascia, n. s. Fcem. Fusca, subtus cinerea, 
capite autico amplo, facie convexa, antennis nigris, arista plumosa, 
metathorace abdominisque maculis duabus basalibus fasciisque quatuor 
albidis, genubus tarsisque rufescentlbus, 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 W'hitish ; abdo- 
men with a whitish spot on each side at the base, and with four 
whitish bands, 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 
