338 CATALOGUE OF 



than the fifth. Thorax roughly and very thinly punctured ; a lar<,'e ochva- 

 ceous spot on each side including the hind angle, which is rounded. Scu- 

 telluin thinly punctured, with a semicircular ochraceous band near the 

 base. Pectus black. Abdomen beneath piceous ; hind borders of the seg- 

 ments on each side and connexivum green. Legs stout ; coxoe pale luteous ; 

 femora red towards the tips, the red hue most prevalent in the fore femora; 

 libiffi furrowed, red at the base. Fore wings with an elongated pale luteous 

 spot in the disk ; membrane blackish. Length of the body 4 lines. 



It agrees in general structure with S. pardalis, but forms a distinct 

 section in the genus. 

 a. New Guinea. From Mr. Wallace's collection. 



The eight following species belong to one group, which seems to repre- 

 sent the American group that has been named Arocera. 



80. Stkachia frontalis. 

 Purpurea aut purpureo-nigra, scite punctata ^suhtus pallide fiavum ; caput 

 et thorax Ucte rufa; caput slrigis quatuor fasciaque postica abhre- 

 viata purpureis ; rostrum palHde flavurn, basi rufum ; antenna nigrce, 

 \iracillima', corporis dimidio longiores, arliculo lo rufo, 2o flavo ; 

 thorax antice flavo varius, maculis diiabus purpureis magnis sub- 

 qua dratis ; sculellum apice testaceo pallida marginatum; pectus 

 purpurea decem-maculaium ; venter purpurea sex-fasciatum ; pedes 

 purpurei, fetnoribus pallide flavis purptireo fasciatis. 



Purple or purplish black, elliptical, thickly and finely punctured. 

 Head and thorax blight red. Head small, with an abbreviated purple 

 band on the hind border; this baud emits two lanceolate purple streaks 

 in a line with two other purple streaks on the fore part of the head ; 

 lobes of equal length; sides hardly reflexed. Rostrum pale yellow, 

 extending to the hind coxa;; first joint red. Antennae black, very 

 slendev, a little more than half the length of the body; first joint 

 red, not extending to the front of the head; second yellow, very much 

 longer than the third; fourth as long as the second ; fifth a little shorter 

 than the fourth. Thorax varied with pale yellow in front; a large sub- 

 quadrate purple spot on each side of the disk ; sides slightly reflexed, 

 roimded in front; hind angles much rounded. Scutellum extending a 

 little beyond the angle of the coriuni, bordered with pale testaceous at its 

 lip, its hind part with a very slight keel. Pectus, connexivum and under 

 side of abdomen pale yellow. Pectus with five purple spots on each side, 

 two on the prosternuni, four on the racsosternum and four on the meta- 

 sternum. Abdomen beneath with six purple bands, of which the first, 

 second, third and fourth are interrupted in the middle. Legs rather long; 

 coxa; and femora pale yellow, the latter with an irregular purple baud near 

 the tip; tibite furrowed. Length of the body 7^ lines. 



a. Batchian. Presented by W. W. Saunders, Esq. 



b. Batchian. From Mr. Wallace's collection. 



Var. j3. — Thorax more completely pale ye'.low in front;' the purple 

 spots very small or quite v/anting. 



c. d. Kaisaa. Piesented by W. W. Saunders, Esq. 



