RHYPAROCHROMID.E. 211 



Genus 14. — Plinthisus {Laf) ; Fieh. 



Sub-elliptic, depressed. 



Head short, narrow, convex, triangular, deeply inserted in the 

 pronotum ; T'ace ; central lobe short, broad ; side lobes short ; 

 antenniferous processes very short. Antennae thin ; 1st joint 

 short, reaching a little beyond the end of the face ; 2nd twice as 

 long as the 1st, clavate ; 3rd and 4th each not so long as the 2nd, 

 fusiform. Eyes small but prominent, touching the pronotum. 

 Ocelli very distant, placed close to the eyes. Rostrum slender, 

 reaching the 2nd pair of coxiB ; 2nd joint longest. 



TJiorax. — Pronotum long, subquadrangular, in front wider than 

 the head across the eyes ; anterior margin very concave ; anterior 

 angles subacute, greatly depressed ; sides more or less constricted 

 beyond the middle ; side margins narrow, reflexed ; hinder angles 

 prominent, right-angled, obtuse ; posterior margin slightly con- 

 cave ; disk slightly convex, flatter behind, in front somewhat raised 

 in the middle and depressed on each side. Scutellum large, tri- 

 angular. Elytra ; Cormm long, slightly convex ; anterior margin 

 narrow, reflexed ; Memhrane thin, with 4 slightly curved nerves. 

 Stermim ; Mesosternum in front sharp-keeled, hindwardly convex, 

 the point of the xyphus depressed ; Metastermmi subcordate, in 

 front carinate, hindwardly long-pointed, depressed. Legs : thighs ; 

 1 st pair very broad, fusiform ; beneath flattened on the anterior 

 half, the sides very finely dentate, two of the teeth being larger 

 than the others ; fibice; 1st pair curved, widened on the inside 

 towards the apex, where are 2 short spines ; 2nd and 3rd pairs 

 with 2 rows of fine, short spines; tarsi; 3rd pair, 1st joint longer 

 than the 2nd and 3rd. 



Species 1. — Plinthisus brevipennis. 



LvGiEUs BREVIPENNIS, Lot. Gen. iJI, 123, (1807). 



Pachymerus brevipennis, Sck/il. Beitr. i, 75, 16, t. 6, fig. 10 (1829); 



Hahn,M^m. i, 59, t. 9, fig. 36 (1831); 



H. ScJif. Norn. Ent. i, 45 (1835). 

 Plinthisus brevipennis, Fieb. Europ. Hem. 178, 3 (1861). 



