168 THE LEPIDOPTERA OF CEYLON. 



NAXIA CALEFACIENS (Plate 168, Fig. 3,^). 

 Naxia calcfaciens, Walker, Catal. Lcp. Het. B. M. xiv. p. 1405 (1858). 



Male and female : forewing ferrugiuous-brown ; crossed by a slender lilac- 

 bordered brown subbasal line and an antemedial line, a more prominent medial 

 straio-bt inwardly-oblique line, wliicli lias a broadly diffused purplisb-lilacine white 

 inner border in the male, and is broadly bordered on both sides with lilacine-white 

 in the female ; a zigzag brown sinuous discal line, followed by the marginal lilacine- 

 white border; a punctiform white orbicular spot: hindwing dusky brown, with a 

 slender indistinct lilacine discal, subaual and marginal fascia. Cilia pale lilacine- 

 browu. Thorax, head, palpi, and legs brown ; abdomen greyish-brown, tarsi 

 blackish, with pale bauds. 



Expanse, S 1|, ? 2|- inches. 



Genus DELGAMMA. 



Male : forewing narrower and more triangular in form than in typical Naxia ; 

 apex more acute, exterior margin very oblique, posterior margin short ; venation 

 similar, except that the submedian is very much more recurved : hindwing much 

 shorter, the costa much arched, smooth and nacreous along the upper side, exterior 

 margin not angular ; costal and subcostal anastomosed for a short distance from the 

 base of the cell ; subcostal branches recurved from end of the cell ; discocellular 

 extremely slender, concave, the radial and two upper medians diverging from a 

 foot-stalk half-way beyond end of the cell, lower median from immediately before 

 end of the cell ; submedian and internal vein straight, base of median and submedian 

 line with silky hairs above. Veins of the hindwing in the female in their normal 

 position. Thorax broad, frontal tuft pointed; abdomen attenuating to the tip; 

 palpi less robust, more laxly squamose, third joint longer, lanceolate ; legs slightly 

 pilose; antennce ciliated. 



Type, D. calorifica. 



DELGAMMA CALORIFICA (Plate 168, Fio. 4, 4a, <J ? ). 

 Naxia calorifica, Walker, Catal. Lep. Het. B. M. xIf. p. 1406 (1858). 

 Male and female. Purplish-brown : forewing washed with purplish-grey ; 

 crossed by an indistinct brown outwardly-oblique waved subbasal line, an antemedial 

 line, and a sharply defined inwardly oblique discal slightly denticulated blackish line, 

 which is outwardly bordered by a slender greyish-white line, followed by a sub- 

 marginal sinuous pale brown line ending in a dark brown curved apical spot ; a 

 marginal row of pale points ; a black punctiform orbicular spot, and a brown lunular 

 reniform mark ; the outer border from the discal line pale lilacine greyish-brown : 

 hindwing purplish-brown, the costal border pale cinereous-brown ; a sharply defined 



