LEPIDOPTERA HETEROCERA. 1109 



the tip. Legs stout, pilose ; hind tibiae with four moderately long 

 spurs. Wings broad. Fore wings straight along the costa, oblique 

 or hardly oblique along the exterior border ; first and second inferior 

 veins contiguous at the base ; third much nearer to the second than 

 to the fourth. 



The three species of Natada differ in structure, and may con- 

 stitute as many genera. 



A. Alae anticae margine exteriore vix obliquo. - rufescens, Walk. 



B. Alas anticae margine exteriore obliquo. 



A. Palpi caput longe superautes. - - rugosa, Walk. 



B. Palpi caput vix snperantes. - basalis, Walk. 



1. Natada rufescens. 



Mas. Fusca; thorax ruj ? us, fusco varius ; pectus fulvum ; abdo- 

 men vitta dorsali rufa ; alee ferruginea, anticce fasciis tribus 

 angustis nigricantibus. 



Male. Brown. Thorax red, brown in front and partly so on 

 each side. Pectus tawny. Abdomen with a red dorsal stripe. 

 Femora with somewhat tawny hairs. Wings ferruginous. Fore 

 wings with three slender blackish bands ; first band straight, slightly 

 oblique, at one-third of the length of the wing; second deeply an- 

 gular, with two blackish dots between it and the first ; third straight, 

 upright, near the tip of the wing. Hind wings a little paler than 

 the fore wings. Length of the body 6 lines ; of the wings 14 lines. 



a, b. North India. From Mr. L. James' collection. 



2. Natada rugosa. 



Mas. Ferruginea ; alee antica obscure fuscce, nitentes, birugosa ; 

 posticce pallidiores. 



Male. Ferruginous. Fore wings dark brown, glistening, with 

 a ridge which extends from one-third of the length of the interior 

 border to five-sixths of the length of the costa, near which it 

 is curved ; another slender exterior and slightly curved ridge nearly 

 joins the first by the costa, and does not extend to the interior bor- 

 der. Hind wings paler brown. Length of the body 10 lines ; of 

 the wings 22 lines. 



a. Scinde ? From Mr. Warwick's collection. 



PART V. -2 G 



