170 LYG^EINA. 



centre than at the sides. The hinder portion not so convex as the 

 front ; rapidly widening posteriorly, with a slight curve to the hinder 

 angles, which are prominent, but rounded ; posterior margin rather 

 longer than the breadth of the base of the elytra, slightly concave. 

 Scutellum large, triangular ; the base deflected, centre depressed ; 

 hinder portion with a central ridge. Elytra ; Clavus slightly de- 

 flected to the Corium ; Corium flat, slightly deflected outwards ; 

 anterior margin narrowly reflexed, nearly straight ; posterior margin 

 straight ; Membrane with 4 nerves arising at the base ; the 1st 

 strongly curved outwards, and ending on the anterior margin ; the 

 2nd less curved ; the 3rd at first strongly curved inwards and 

 raised, then straight ; the 4th at first curved, parallel to the 3rd, 

 but beyond the middle divergent and sinuate ; all the last 3 extend 

 to the posterior margin. Sternum : Mesosternum ; xyphus very 

 short. Legs: ihiglis ; 1st pair very thick; beneath, beyond the 

 middle, with two short spines, another nearer the apex, and some 

 other much smaller ones adjacent ; 2nd and 3rd pairs not so strong 

 as the 1st, and not thickened in the middle, the apex slightly con- 

 stricted ; tibiae a little thickened at the apex ; tarsi very long ; 1st 

 joint longer than the 2nd and 3rd, the 2nd very short. 



Abdomen oval, above flat, beneath rather convex ; Connexivwn 

 moderate, much reflexed. 



Species 1. PLOCIOMERUS FRACTICOLLIS. 



PACHYMERUS PRACTICOLLIS, Schill. Beitr. i, 82, 27, t. 7, fig. 6 (1829) ; 



Hahn, Wanz. i, 66, t. 10, fig. 40 (1831) ; 

 H. Schf. Norn. Ent. i, 44 (1835). 



PLOCIOMERUS Sahib. Geoc. Fen. 70, 1 (1845). 



PACHYMERUS INSECTUS, Bohem. Vet. Akad. Handl. 250 (1849). 



(PLOCIOMERUS) FRACTICOLLIS, Flor, Rkyn. Liv. i, 229, 2 



(1860). 



PLOCIOMERUS PRACTICOLLIS, Fieb. Earop. Hem. 172, 3 (1861). 

 PLOCIOMERA Stal, Vet. Akad. Forh. 214, 2 (1862). 



Black, finely haired. 



Head black, finely punctured. Antennae ; 1st and 4th joints 

 piceous; 2nd and 3rd reddish-brown; apex piceous. Eyes black. 

 Ocelli reddish. Rostrum piceous. 



