loo LEPIDOPTERA. 



0. Fore wiags chalky-white with faintly dotted second 



line. T. Bondii. 



C-. Fore wdugs white with the nervures broadly ochreous. 



T. muscvlosa. 

 C^. Fore wdngs pale drab with a reddish tinge, stigmata 



faintly visible. T. Hdmanni. 



A?. Fore wings elongated, pale drab with brown nervures. 



T. elymi. 



1. T. musculosa, HUbb. — Expanse 1| inch. Moderately 

 stont. Fore wings white, with costa and nervures broadly 

 ochreous. Hind wings white with the nervures brown. 



Antennge simple, light brown ; palpi extremely slender, 

 depressed, brownish-white ; head white, rather smooth, the 

 scales depressed and lying forward ; thorax white, rather 

 loosely covered with long scales, collar loosely erect, fascicles 

 rather long, w^hite ; abdomen yellowish-white, the lateral and 

 anal tufts moderately developed. Fore wings rather narrow, 

 costa arched at the base, thence straight or even faintly 

 hollowed ; apex bluntly rounded ; hind margin straight and 

 but little oblique to below the middle, where it is suddenly 

 rounded off ; dorsal margin nearly straight ; colour white ; 

 costal and dorsal margins and median nervure broadly, and 

 the smaller nervures narrowly, clouded with ochreous or 

 yellow-brown ; cloudy-white spots in the places of the 

 orbicular and reniform stigmata ; no indication of other 

 markings ; cilia yellowish-white. Hind wings with the 

 margin rather angulated below the apex, otherwise rounded ; 

 white, dusted all over with pale straw-colour ; nervures 

 faintly brown ; cilia yellowish-white. Female stouter, very 

 similar, but one in Dr. P. B. Mason's collection has the 

 ground colour of the fore wings tinged with yellow. 



Underside of all the wings white, the costal margins and 

 nervures tinged with pale yellowish-brown ; body and legs of 

 the same colour. 



On the wing in August. 



