Gen. Celyphus, Dalman.
170. Celyphus obtectus, Dalman. See Vol. I. p. 30.
171. Celyphus scutatus, Wied. See Vol. I. p. 131.
Subfam. Ortalides, Haliday.
Gen. Lamprogaster, Macq.
172. Lamprogaster marginifera, Walk. See Vol. II. p. 111.
Gen. Pterogenia Bigot, MSS.
Mas et Fœm. Platystomati affinis. Corpus breve, latum, crassum, Caput thorace latius, antice planum, genis dilatatis. Antennæ parvæ; articulus 3us longi-conicus; arista plumosa. Thorax subconvexus; scutellum magnum. Abdomen thorace brevius et angustius. Pedes breves, validi; tibiæ arcuatæ. Alæ sat parvæ; alulæ maximæ. Mas. Genæ angulatæ, valde dilatatæ.
This genus is allied to Platystoma and more especially to Trigonosoma.
Male and Female. Body short, broad, thick. Head broader than the thorax, flat in front; vertex broad; sides of the face or genæ dilated; epistoma rather prominent. Eyes oblong. Antennæ; small, resting in the cavity of the broad face; 3rd joint elongate-conical, more than twice the length of the 2nd; arista plumose. Thorax compact, slightly convex; scutellum large, conical. Abdomen short, conical, shorter and narrower than the thorax. Legs short, stout; tibiæ curved, especially the hind pair. Wings rather small; alulæ very large. Male. Sides of the face more dilated than those of the female, and forming an angle or short horn on each side.