20 HEMIPTERA. 



Genus 10. TETRARTHRIA, n. g. 



Head with the central lobe longer than the lateral ones ; late- 

 ral margins waved. Rostrum long, reaching the posterior margin 

 of the fourth ventral segment ; first joint very short, second and 

 fourth about equal, twice as long as the first, third joint longest, 

 equal to first and second together Antennae of four joints, basal 

 joint shortest, not reaching the front of the head, remaining 

 joints about equal, long and slender, flattened, third and fourth 

 furrowed longitudinally. Body elongated; scutellum rounded 

 at apex, covering nearly the whole of the elytra. Abdomen with 

 a long ventral furrow ; anal plate transverse, truncated at apex. 

 Breast without a furrow for the reception of the rostrum or pro- 

 jecting flaps covering the base of the antennae. Legs moderate ; 

 tarsi three-jointed, second joint shortest. 



1. TETRARTHRIA variegata, n. s. 



T. rufescens, punctata; thoracis scutellique disco viridi-aeneo, 

 nigro-maculato ; capite, antennis, pedibusque nigris, femoribus 

 basi, rostroque rubris. 

 Long. lin. 8. 



Head black, with some scattered coarse punctures, the lateral 

 margins and two parallel longitudinal lines brassy green. Eyes 

 pale brown. Thorax with a large, semicircular brassy green 

 patch on the disc, touching the posterior margin, and surrounded 

 by a broad dull red band which runs from one posterior angle to 

 the other ; four spots on the disc, near the posterior margin, of 

 which the two intermediate are largest, and the anterior and 

 lateral margins black. Scutellum brassy green in the centre, 

 the margins dull red, punctured and thickly clothed with fine 

 golden hairs, with a large black patch in the centre of the base, 

 two small spots of the same colour immediately behind this, and 

 two large ones on the lateral margins behind the middle ; a large 

 T-shaped black patch occupies the disc of the scutellum, formed 

 by a transverse band, before the middle, and a central longitu- 

 dinal one which reaches nearly to the apex, and is furcate pos- 

 teriorly. Abdomen beneath red, with broad black margins. 

 Rostrum red. Legs black, with the basal half of the thighs 

 bright red. Antennae black, with the basal joint reddish, and a 

 pale band near the base of the fourth joint. 



a. Philippine Islands. From Mr. Cuming's Collection. 



Genus 11. LIBYSSA, n. g. 



Head short and broad, narrowed anteriorly, convex, with the 

 central lobe longer than the lateral ones, and the lateral margins 



