23,4 Baker: Malayan Jassoidea 399 



Genus JASSONIRVANA novum 



Type, Jassonirvana lineata sp. nov. 



Characters as given in the generic synopsis. Having some- 

 what the appearance of a small Neocoelidea of the Jassini, but 

 indubitably a member of this family. Its appearance from 

 above is not unlike that of a Macroceratogonia. 

 Jassonirvana lineata sp. nov. Plate 5, fig. 45. 



Very pale ochraceous; two complete sublateral longitudinal 

 orange bands on vertex are extended caudad to hind margin 

 of pronotum; a broad median band on vertex, a broad median 

 and two sublateral bands on pronotum ivory white, the latter 

 extending caudad within claval suture to half the length of 

 clavus ; a broad orange band passes from base to apex of clavus 

 next the commissure; corium and membrane subhyaline, the 

 former slightly tinged with ochraceous. Length, female, 4.25 

 millimeters; male, 3.5. 



Face (Plate 5, fig. 45, c) as broad as long, eyes very large; 

 lorse long and very narrow; front broadly flattened except at 

 base where it is strongly convex below apex of vertex; surface 

 shagreened; median carina confined to apical half. Supra- 

 antennal carina weak and strongly curved. Basal lateral areas 

 of face roundly convex, entirely without frontal folds or wrinkles. 

 Anterior margin of vertex entirely without bordering carina, 

 the vertex being smoothly rounded on to face; ocelli on this 

 rounded border a little within the lateral border of crown as 

 seen from above and about three times their diameter from 

 eye. Length of vertex (Plate 5, fig. 45, a) one and a half times 

 interocular width, strongly narrowed between the deep-set eyes, 

 the lateral margins of head in front of eyes straight for a short 

 distance, then oblique to the obtuse-angulate apex; surface of 

 vertex evenly gently convex, shagreened, sides and base without 

 raised margins. Length of pronotum a fifth greater than length 

 of vertex, anterolateral margins subequal to posterolateral and 

 into width about four times; surface smooth with some faint 

 indications of cross wrinkling on median basal area. Scutellum 

 much shorter than pronotum, surface smooth. Several rows of 

 coarse pit punctures on basal part of corium; clavus opaque; 

 corium translucent, entire apical area hyaline ; a transverse cross 

 vein (Plate 5, fig. 45, d) near apex of subcostal area, and just 

 before this an indication of a very oblique cross vein which 

 joins the former at base ; venation peculiar in that all the apical 

 cells are strongly narrowed to base and all bordering on the radial 



