NILAPARVATA. 473 



Genus NILAPARVATA. nov. 



Type, iY. (jreeni, Pist. 



Distribution. Ceylon. 



Head (including eyes) narrower than pronotum ; vertex longer 

 than broad, lateral margins strongly carinate, their anterior 

 angles a little prominent, two oblique discal carinations com- 

 mencing at about middle of lateral margins and angularly meeting 

 slightly in front of anterior margin, the basal margin ridged ; face 

 elongate, very much longer than broad, centrally and laterally 

 carinate, the carinations very broad and prominent, the central 

 one furcate at base, apical margin strongly ridged ; clypeus 

 strongly, broadly, laterally and medially carinate; antenna? inserted 

 beneath eyes, second joint much longer than first, incrassate and 

 grauulose ; pronotum about as long as vertex, centrally, laterally, 

 and anteriorly carinate ; mesonotum faintly tricarinate ; tegmiua 

 less than three times as long as broad, the apical margin rounded, 

 costal and inner margins subparallel, crossed at about two-thirds 

 from base by an irregular series of transverse veins, defining an 

 apical area, in ^hich the upper longitudinal vein obliquely 

 bifurcates to costal margin and the lower longitudinal vein 

 strongly bifurcates near its base ; wings at base broader than 

 tegmina ; posterior tibia? with a spine near middle, another at 

 apex, and with a long robust apical spur, 



2078. Nilaparvata greeni, sp. n. 



Body and legs very pale ochraceous ; head and mesonotum pale 

 castaneous-brown ; vertex with the margins pale ochraceous, and 

 with anterior interspaces between the central and lateral carina- 

 tions black ; face with the carinations very pale ochraceous and 

 more or less margined on each side with piceous ; clypeus pale 

 castaneous with the carinations very pale ochraceous ; pronotum 



Fig. 260. —2iUaparcata yrecni. 



dull pale ochraceous ; mesonotum with the carinations faint and 

 pale ochraceous ; abdomen with the apical area either piceous 

 (as in figure) or coucolorous, and this may prove to be a sexual 

 character; tegmina subhyaline with a dull yellowish tint, the 

 transverse veins and the apical venation fuscous, an elongate 



