Mas et Fœm. Corpus latum. crassum. Frons lata. Antennæ brevissimæ; articulus 3us subrotundus; arista subpubescens. Thorax subpubescens, quasi coriaceus; scutellum parvum; metathorax maximus, abdomen alasque incumbentes obtegens. Pedes breves, robusti; femora subincrassata; tibiæ arcuatæ. Alæ parvæ.
Male and Female. Body broad, thick, compact. Head almost as broad as the thorax; front broad, narrower than the epistoma; face vertical. Antennæ very short; third joint nearly round; arista very minutely pubescent. Thorax solid, apparently horny, very minutely pubescent; scutellum small; metathorax elliptical, enormously developed, covering the whole abdomen, sheltering the wings when in repose. Legs short, stout; femora slightly incrassated; tibiæ curved. Wings concealed beneath the metathorax.
231. Nomba tecta, n. s. Mas et Fœm. Nigra, obscura, antennis piceis, tarsis flavis apice nigris, alis cinereis.
Male and Female. Black, dull; antennæ piceous; tarsi yellow, with black tips; wings grey; veins black. Length of the body 11/2-13/4 line; of the wings 21/2-3 lines.
Subfam. Hydromyzides, Haliday.
Gen. Notiphila, Fallen.
232. Notiphila lineosa, n. s. Mas et Fœm. Fusca, obscura, capite 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; antennæ 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 tibiæ at the tips, and fore tibiæ 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 præbrachial transverse; halteres tawny. Length of the body 13/4-2 lines; of the wings 31/2-4 lines.
The two following species belong to the group of which N. Cinerea is the type.
233. Notiphila quadrifascia, n. s. Fœm. Fusca, subtus cinerea, capite antico amplo, facie convexa, antennis nigris, arista plumosa, metathorace abdominisque maculis duabus basalibus fasciisque quatuor albidis, genubus tarsisque rufescentibus, alis cinereis puncto costali nigro, halteribus testaceis.