202 LYGiEINA. 



4th a little longer than tlie 3rcl, fusiform. Eyes moderate, touching 

 the pronotum. Ocelli very distant. Mostrum strong, reaching to 

 the 2nd pair of coxsd ; 1st joint as long as the head; 2nd and 3rd 

 longer, subequal ; 4th shorter than the 1st. 



Thorax. — Pronotuvi long, subtrapezoidal, campanulate, or sub- 

 quadrangular, in front wider than the head across the eyes ; anterior 

 angles squarely rounded ; sides constricted beyond the middle ; side 

 margins very narrow ; hinder angles prominent, rounded ; posterior 

 margin usually not much longer than the anterior, concave ; disk, 

 first |rds convex, last 3rd flatter, raised within the hinder angles into 

 a callus. Scutelhim large, long, triangular, deflected posteriorly. 

 Elytra ; Clavus flat ; claval suture depressed ; Corium flat, convex 

 posteriorly ; Memlra?ie with 5 nerves ; the 1st short, 2nd and 3rd 

 slightly curved at the base, 4th and 5th bisinuate at the base. 

 Sternum ; Mesosternum in front, with a short keel ending abruptly 

 in a point ; hindwardly with a depression extending into the short 

 xyphus ; Metastermim with a short, shai'p keel. Legs strong ; tliujlis ; 

 1st pair greatly incrassated, flattened beneath, with one large tooth 

 beyond the middle, and two or three small ones between it and the 

 apex ; t'lbice ; 1st pair bent at the base, thickened gradually to the 

 apex, widened internally, and with a strong channel on the sides 

 extending to the apex ; tarsi strong, 1st joint longer than the 2nd 

 and 3rd, on the 3rd pair twice as long. 



Ahdomen. — 2nd segment beneath, prominent in the middle. 



Species 1. — Rhyparoohromus pilicornis. 



Pachymekus riLicoiiNis, Muls. Au. Soc. Liu. 99 (1S52). 



Black. Anteniice with long, projecting hairs ; 1st joint piceous. 

 Pronotum long, subtrapezoidal. Corium piceous, outwardly 

 paler ; memlrane piceous, with lighter shades ; nerves inter- 

 ruptedly pale. 



Head finely punctured ; Face ; apex of the central lobe rufous. 

 Antennce black, clothed with long projecting hairs ; 1st joint and 

 lower part of the 2nd piceous. Eyes and Ocelli black. Bostrum 

 yellowish. 



Thorax. — Pronotum very long, considerably widened posterioi'ly, 

 so that the form is subtrapezoidal ; anterior portion finely, closely 



