228 LYG^INA. 



about -Jrd longer than the 1st ; 3rd and 4th in length subequal, each 

 shorter than the 2nd ; 4th fusiform, scarcely so thick as the 1st. 

 Eyes large, hemispherical, placed at the end of a long, thick 

 peduncle. Ocelli large, distant. Eostrum reaching across the 

 metasternum, 1st joint as long as the head. 



Thorax. Pronotum broad, trapeziform, convex; anterior and 

 posterior margins nearly straight ; sides a little constricted before 

 the middle ; hinder angles prominent, obtusely rounded ; disk on 

 the 1st 3rd slightly raised, behind it a sharp, transverse impression. 

 Scutellum large, triangular ; base with a deep transverse depres- 

 sion, the remainder convex, almost ridged in the centre, and with a 

 small callosity at the basal angles on the margin of the depression. 

 Elytra as long as the abdomen ; clavus deflected to the corium ; 

 Corium ; anterior margin nearly straight ; posterior margin straight, 

 incrassated ; nerves not prominent ; Membrane with 5 prominent 

 nerves ; the 1st short, curved to the anterior margin ; the 2nd and 

 3rd arise together near the base, and diverge straight to the posterior 

 margin ; the 4th and 5th arise near together at the base ; the 4th 

 curves towards the 3rd, and is then straight ; the 5th, at first very 

 thick, curves a little towards the inner margin, it then becomes 

 obsolete, but reappears after a short interval, and, like the 4th, goes 

 to the posterior margin. Sternwi ; Mesosternum in the centre with 

 a deep fovea ; xyphus short, pointed. Legs short, stout ; fhigTis 

 gradually less toward each end ; tibia gradually tKicker to the apex ; 

 tarsi stout, long ; 2nd joint \ the length of the 3rd ; on the last pair 

 the 1st joint as long as the other 2. 



Abdomen in the ? beneath, the 1st 3 segments posteriorly 

 straight; the 4th a little shorter, and the 5th very short in the 

 middle ; the 6th greatly deflected, long, ridged in the centre, pos- 

 terior margin rounded and sinuate. Genital segments ; 1st small, 

 overlying the base of the 3rd in 2 points ; 3rd convex, with a deep 

 longitudinal cleft, in the centre of which is a ridge, sides narrowed 

 to an obtuse point ; the 2nd appears as a short, triangular plate at 

 the sides of the 3rd. 



