254 THE LEPIDOPTERA OF CEYLON. 



Genus BYTURNA. 

 Bijturna, Moore, Proc. Zool. Soc. 1883, p. 28. 



Wings very small : forewing narrow, elongated ; costa straiglit, apex acute, 

 exterior margin slightly convex ; costal vein long, extending to two-thirds the 

 margin ; first subcostal branch emitted at one-half, and second at one-fourth before 

 end of the cell, second trifurcate, the third being thrown off at three-fourths and 

 fourth from one-fourth beyond the base, fifth from end of the cell and looped to 

 fourth close to its base ; discocellular bent near upper and lower end, very concave, 

 slender; radials from the angles; upper median from angle at lower end of the cell, 

 middle at one-eighth and lower at one-third before its end ; submedian straight : 

 hindwing elongated, oval ; costal vein straight, extending to apex ; two subcostal 

 branches from end of the cell ; discocellular concave, radial from the middle ; two 

 upper medians from beyond end of the cell, lower at one-fourth before its end ; 

 submedian and internal vein straight. Body stout ; palpi long, ascending, extend- 

 ing to a level with the vertex, second joint squamose, laterally broadest at the apex, 

 third joint slender, naked, al^out half length of second ; antenufB finely setose ; legs 

 squamose, fore tibia tufted beneath. 



Type, B. digramma. 



This genus has much the appearance of Bivula. 



BYTOENA DIGRAMMA. 



Bocana digramma, Walker, Catal. Lep. Het. B. M. xxxiv. p. 1170 (1865). 

 Byturna digramma, Moore, Proc. Zool. Soc. 1883, p. 29. 



Pale ochreous : forewing with a few indistinct brown speckles, an incomplete 

 zigzag postmedial indistinct brown line which includes a brown mark beyond end of 

 the cell ; submarginal hne zigzag, very indistinct ; marginal points brown ; two 

 superposed black dots at end of the cell. Body, head, palpi, and legs pale ochreous. 



Expanse t% inch. 



BYTURNA CUCULLATA. 



Ochreous : forewing with two equidistant black spots on the costa, the outer 

 spot recurved outward, and in some specimens joined to a Ijlackish spot beyond end 

 of the cell ; reniform mark defined by two superposed black dots ; a few brown 

 speckles before the apex ; marginal points more or less indistinct, brown : hindwing 

 with a slight cinereous-tinged outer border. Collar in front of thorax, head, palpi, 

 and forelegs black. 



Expanse f inch. 



Family PYRALIDiE. 



Wings generally narrow ; never elevated in repose, nor wrapped on the body ; 

 entire ; shining, often iridescent, and semihyaline. Thorax globose, short ; abdo- 



