REDUVINA. 39 



the base of the eyes, or wanting. Bostrum tree, short, tliick, and 

 3-jointed, or long, slender, and 4-jointed. Pronotum stout, some- 

 what long-trapeziform, narrowed in front ; a transverse furrow on 

 the disk before the middle, where also the sides are deeply con- 

 stricted. Scutellum with or without a basal nodule. Elytra : 

 Corium long and narrow, the posterior margin oblique, without 

 suture, or straight and well defined ; Membrane with one, two, or 

 three cells, and one or several nerves therefrom. Legs moderate, 

 strong ; or the second and third pairs very long and slender ; tarsi 

 trimerous. 



Abdomen. — The segments differ in the families or genera, as stated. 



Family L— REDUVID^. 



Elongate. Head convex, constricted, and on the upper side trans- 

 versely incised behind the eyes ; the posterior portion of the head 

 globose or elongate, and more or less trigonate. Anfeiince 4 — 8- 

 jointed ; long, or very long, and slender ; each inserted on a small 

 process in front of the eyes (the intermediate joints minute). Ui/es 

 inserted at the middle of the sides of the head. Ocelli close or 

 distant, rarely wanting. Rostrum short, thick, curved, 3-jointed, 

 reaching nearly to the fore coxce. Pronotum with a central, longitu- 

 dinal depression, and a transverse depression before the middle, the 

 sides constricted at the same place. Elytra: Corium submem- 

 branous, narrow, much extended on the anterior margin, and 

 obliquely shortened within; posterior margin without membrane- 

 suture : Membrane extended up the inner margin of the corium ; 

 posteriorly very broad, with one or two long, closed cells, not 

 reaching to the posterior margin, and one nerve from them pos- 

 teriorly. Leys : third pair longest ; second and third pairs some- 

 times very long. Gen. 1, Ploiaria ; 2, Pyyolampis ; 3, Coranus ; 4, 

 Peduvius. 



Family 2.— NABIDtE. 



Elongate. Head produced behind the eyes into a short neck ; 

 Clypeus not much produced. Antennce 5-jointed, filiform, inserted 

 on a process at the sides of the head, in front of the eyes. Eyes 

 large or moderate, inserted behind the middle of the sides of the 

 head. Ocelli in a line with, or posterior to, the base of the eyes. 



