This insect differs so much from the other species of the extensive family Reduviidæ, that I have been compelled to raise it to the rank of a distinct genus, the characters of which are as well marked as those of the majority of the genera recently proposed by the Continental Entomologists in this group. Its characters as a genus are—

Caput parvum. Antennæ breves vix longitudine thoracis, 4?-articulatæ; articulo 2ndo., 1mo. et 3tio. breviori. Pronotum posticè in lobum magnum depressum, supra scutellum et basin alarum productum. Hemelytra marginem lateralem abdominis haud tegentia. Tarsi ut videtur 1-articulati.

PYRRHOCORIS PRINCEPS.

Plate [XLIII]. fig. 5.

Order: Hemiptera. Suborder: Heteroptera. Section: Geocorisa. Family: Lygæidæ.

Genus. Pyrrhocoris, Fallen, Burmeister. Astemma, St. Farg. & Serv. Platynotus, Schill.

Pyrrhocoris Princeps. Sanguineus; pronoti lobo antico in medio, elytrorum fasciâ versus basin maculâque costali mediâ nigris, membranâ apicali fuscâ, femoribus in medio nigris. (Expans. Alar. 2 unc.)

Syn. Cimex longirostris, Drury, App. vol. 3.

Habitat: Sierra Leone.

Head yellowish-brown. Thorax in front black, and brown behind. Antennæ black and slender, about half the length of the insect. Scutellum triangular and black. Corium yellow-brown, having a black streak crossing the middle, and a black spot near it; apical membrane opake and dark brown. Wings diaphanous. Rostrum long and slender, reaching to the middle of the abdomen. Legs partly black and brown. Tarsi three-jointed.