_Mas. Corpus_ sublineare. _Caput_ thorace non latius. _Oculi_ connexi. _Antennae_ brevissimae; articulus tertius rotundus; arista apicalis, gracilis, setiformis. _Thorax_ sutura transversa bene determinata. _Scutellum_ prominens, trigonum, marginatum. _Abdomen_ thorace paullo brevius, non latius. _Pedes_ breviusculi, validi, non dilatati. _Alae_ mediocres. _Male_. Body nearly linear, rather thick. Head not broader than the thorax. Eyes connected. Antennae very short; third joint round; arista apical, long, slender, setiform. Thorax with the transverse suture very distinct. Scutellum prominent, triangular, with a border. Abdomen a little shorter and not broader than the thorax. Legs stout, rather short, not dilated. Wings moderately broad; veins in structure like those of _Clitellaria_. 18. ADRAGA UNIVITTA, n. s. _Mas._ Nigra, subtilissime punctata, antennis piceis, thorace vitta cinerea, tarsis posterioribus albis, alis nigricantibus. _Male_. Coal-black, hardly shining; antennae piceous; thorax and abdomen very minutely punctured; thorax with a stripe of cinereous tomentum; posterior tarsi white; wings blackish, veins black. Length of the body 3 lines; of the wings 5 lines. Gen. OBRAPA, n. g. _Foem. Corpus_ breve, latum, crassum, convexum. _Caput_ transversum, thorace angustius. _Antennae_ breves; articulus tertius rotundus; arista apicalis, gracilis, setiformis. _Thorax_ sutura transversa bene determinata. _Abdomen_ transversum, thorace paullo latius, valde brevius. _Pedes_ breviusculi, validi; antici subdilatati. _Alae_ mediocres. _Female._ Body short, broad, thick, convex. Head transverse, narrower than the thorax. Antennae short; third joint round; arista apical, slender, setiform. Thorax with the transverse suture very distinct. Scutellum large, prominent, with a marginal suture. Abdomen transverse, a little broader than the thorax, and not more than half its length. Legs stout, rather short, the fore pair slightly dilated. Wings moderately broad, veins rather irregular; discal areolet large, quadrilateral; externo-medial veins, subanal vein, and anal vein very slight; subanal vein and anal vein united at some distance from the border. 19. OBRAPA PERILAMPOIDES, n. s. _Foem._ Atra, nitens, subtilissime punctata, capite glabro, antennis piceis, tarsis posterioribus albidis, alis limpidis, venis albidis basi nigris, halteribus niveis. _Female._ Deep black, shining, very minutely punctured; head smooth; antennae piceous; posterior tarsi whitish, with black tips; wings limpid, veins whitish, black towards the base; halteres snow-white. Length of the body 2-1/2 lines; of the wings 5 lines. 20. OBRAPA CELYPHOIDES, n. s. _Foem._ Atra, nitens, subtilissime punctata, capite glabro, antennis piceis, tarsis albidis, alis nigro-cinereis, venis nigris, halteribus niveis.