23,4 Baker: Malayan Jassoidea 391 



vertex and pronotum as a whole much broader in proportion to 

 width than in P. davaoensis; median carina equally strong 

 throughout but not quite reaching apex of vertex; lateral areas 

 strongly depressed, especially basally; surface smooth, with few 

 scattering punctures. Pronotum half the length of vertex, an- 

 terolateral margins into width a little more than six times ; hind 

 margin broadly subangularly emarginated. Venation (Plate 4, 

 fig. 36, b) peculiar in the small and apically narrowed second 

 apical cell. 



Borneo, Sandakan (Baker). This small species is a con- 

 spicuous case of a common condition in this family, of species 

 so closely resembling others in colors that they might be placed 

 together on superficial examination, and yet be totally distinct 

 structurally. 



Pseudonirvana davaoensis sp. nov. Plate 4, fig. 37. 



Very pale ochraceous; a large black spot at apex of vertex; 

 sides of head in front of eyes slightly yellowish. Tegmina clear 

 hyaline; three fuscous subcostal stripes in the usual position 

 of the cross veins, the first faintest; a large round black spot 

 entirely within the large second apical cell. Length of female, 

 4.5 millimeters. 



Disk of front plane, sides roundly convex, surface coarsely 

 shagreened, the fine central carina weaker at the middle, stronger 

 above Vhere it is not raised. Ocellus visible in either dorsal or 

 facial view, on the lateral border of head and beneath the con- 

 tinuous strong supraocular carina, which borders the entire 

 margin of vertex ; a subocellar carina extends strongly obliquely 

 downward from apex of front as in Pythamus; the ocellar area 

 is narrow and has several transverse wrinkles within; the 

 upper lateral carina of front passes from near end of supra- 

 antennal carina obliquely upward and toward apex; supra- 

 antennal area smooth. Vertex (Plate 4, fig. 37, a) twice as 

 long as interocular width, the lateral margin of head a little 

 outcurved before eyes; the fine median carina complete, slightly 

 stronger basally; the surface not depressed medially, little 

 depressed along lateral margins, basal half smooth, with scat- 

 tering minute punctures, apical half minutely irregularly 

 wrinkled. Pronotum a little less than half length of vertex, 

 anterolateral margins into width a little less than three and a 

 half times, the anterolateral margins much longer than poste- 

 rolateral; with or without a delicate median dark line; surface 

 smooth except for subobsolete wrinkles on median basal area 



