DICHROOSCYTIM;. 477 



FAMILY 18. DICHROOSCYTID J!. 



Genus 1. DICHROOSCYTUS, Fieb. 

 Elongate, almost parallel. 



Head large, long, pointed, twice as broad across the eyes as long ; 

 viewed from the side the crown, clypeus, and face, form a continuous 

 curve ; Crown almost flat, slightly deflected to the clypeus ; Clypeus 

 convex, the apex considerably in front of, and with the short anten- 

 niferous processes almost in a line with the lower margin of the 

 eyes; Face; central lobe long, convex, somewhat broad, pointed; 

 side lobes shortish, narrow, somewhat parallel. Antennae shorter 

 than the body ; 1st joint slightly thickened, somewhat cylindrical, 

 shorter than the head ; 2nd thinner than the 1st, more than 3 times 

 its length, scarcely thickened to the apex; 3rd and 4th filiform, 

 together a little shorter than the 2nd, 4th about f ths the length of 

 the 3rd. Eyes large, prominent ; viewed from above short oval ; from 

 the side long, narrow, oval. Rostrum free, reaching to the 2nd or 

 3rd abdominal segment ; 1st joint stout, reaching to the apex of the 

 xyphus of the prosternum. 



Thorax. Pronotum short, trapeziform, twice as broad on the 

 posterior margin as long, with a narrow collar, and 2 callosities in 

 front ; sides straight, rounded to the collar ; hinder angles acute, 

 very slightly raised ; posterior margin straight across the scutellum, 

 from thence rounded to the hinder angles ; disk convex, flattish in 

 the centre, deflected to the head. Scutellum triangular, equilateral, 

 considerably raised above the clavus, with a transverse channel in 

 front, the basal portion almost entirely concealed beneath the 

 posterior margin of the pronotum. Elytra horizontal, longer than 

 the abdomen. Clavus convex, deflected to the corium ; Corium con- 

 vex, cuneus and membrane deflected. Sternum: Prosternum; xyphus 

 triangular, equilateral, sides keeled ; Mesosternum short, convex, 

 elevated posteriorly, with a central channel; posterior margin convex, 

 indented in the middle ; Metasternum ; centre angle prominent. 

 Legs ; tarsi long; 3rd joint almost equal in length to the 1st and 

 2nd ; 1st and 2nd subequal. 



