Mr. John Scott o?i LithocoUetis. 



IT. Description of a new Species of LithocoUetis. By 

 John Scott, Esq. 



[Read 3rd October, 1853.] 



LithocoUetis irradlella. (PI. I. fig. 1.) 



At first sight this insect much resembles L. lautella, but is easily- 

 distinguished from it by its darker anterior wings, the streaks 

 being more slender, and the spot at the anal angle not being on 

 the inner margin. 



Expansion of the wings 4 lines. 



Tuft of the head black, face and palpi shining, silvery ; antennae 

 darkish, with a broad white ring near the tip, which last is black ; 

 thorax blackish ; abdomen blackish, beneath white ; the four an- 

 terior legs have the femora and tibise white ; the posterior legs 

 have the femora black, tibiae white ; tarsi of all the legs white, 

 except the basal joint of each, which is black above, throughout 

 nearly its whole length. 



Anterior wings olivaceous-brown, with three silvery white 

 streaks along the costa, nearly equidistant from each other, and 

 two on the inner margin. The first costal streak is placed con- 

 siderably before the middle of the wing, it nearly reaches the fold 

 (rather obliquely) and points towards the anal angle of the wing ; 

 the second costal streak is situated rather more than halfway 

 between the first and third, somewhat crescent-shaped, broadest 

 at its base, and also terminates a little short of the fold ; the third 

 costal streak is nearly uniform in thickness throughout, and is 

 much more curved than the preceding. The first inner marginal 

 streak lies a little in front of the first costal one, the exterior point 

 of the base of the latter being nearly in a line with the interior 

 point of the base of the former, its apex terminating a little be- 

 yond the fold of the wing, and beyond the apex of the first costal 

 streak, which it almost touches ; the second inner marginal streak 

 lies opposite the end of the second costal streak, and forms with 

 it an interrupted fascia, not touching the inner margin, and beyond 

 the apex of the third costal streak, to which it points, is a minute, 

 nearly round, silvery-white spot. The basal streak, also silvery- 

 white, is narrow and short, and is rather nearer the costa than the 

 inner margin, and there is a small oblong spot on the inner margin 



