TRTFIDAL. 2>V 



We have two species, readily distinguished from each 

 other : 



A. First and second lines nearly parallel, hiud margin 

 much hollowed. T. retusa. 



A?. First and second lines converging at the dorsal margin'; 

 hind margin very little hollowed. 7'. ^i(htnsa. 



1. T. subtusa, Srlu'f.— Expanse 1^ to !'■■ inch. Fore 

 wings rather truncate, glistening olive-grey ; transverse lines 

 and edges of the stigmata orange-yellow ; hind wings dull 

 smoky-brown. 



Antenna) of the male rather short and . thick, simple, 

 finely ciliated, olive-brown ; palpi slender, dusky-brown ; 

 eyes naked, brown; head smoky-brown; thorax smooth, 

 pale grey-brown, the back scales drawn together into a 

 very small tuft; fascicles smoky-white; abdomen pale 

 smoky-brown ; lateral tufts minute ; anal tuft narrow. 

 Fore wings truncate, of rather even breadth; costa gently 

 and very regularly arched ; apex sharply angulated ; hind 

 margin below it very faintly hollowed, but filled out in 

 the middle and rounded off below; dorsal margin faintly 

 rounded ; colour a peculiar shining or glistening olivaceous- 

 grey, or yellowish grey -brown, not easy to indicate ; basal line 

 straight from the costa but abbreviated; first line straight 

 and a little oblique, leaning towards the base of the costal 

 margin; second lino very erect and but slightly curved, 

 slender throughout, pale orange-yellow or yellowish-white, 

 and slenderly edged with a deeper, yellower shade of the 

 ground colour; subterminal line hardly perceptible, but 

 faintly indicated as an irregular undulating series of whitish- 

 brown flecks or tiny clouds; orbicular stigma round, of 

 the ground colour, but margined with yellowish-white; 

 reniform stigma large, erect, faintly tinged with yellow- 

 brown and distinctly edged with an orange-yellow line; 

 claviform stigma more obscure, but similarly margined ; cilia 

 concolorous, but with a pale yellow line along the base. 



