234 PAPERS BY DR. B. CLEMENS. 



Group HOMOSETIA. 



Hind-wings very narrow, linear-lanceolate. Internal border 

 without basal angle, costa arched at the basal third, and con- 

 cave thence to the tip. Without submedian or internal veins. 

 The subcostal vein is simple, much attenuated from the 

 middle to the base, and enters the costa behind the tip of the 

 wing. The cell is closed by a very indistinct discal vein and 

 gives rise to two branches ; the upper one, sometimes attenuated 

 towards its origin, is delivered to the tip of the wing; the 

 lower one, sometimes on a common stalk with the superior 

 branch of the median vein, runs to the hinder margin beneath 

 the tip. The median vein runs near the inner margin, is 

 3-branched, the posterior vein becoming quickly identified 

 with the margin. 



Fore-wings narrow, lanceolate. The costal vein almost 

 identified with the costa. The subcostal attenuated towards 

 the base, and gives off, at the basal third, a long marginal 

 branch, and from the hinder part of the discal cell four 

 branches; the discal vein throws off two branches. The 

 median is 3-branched, the posterior, sometimes attenuated at 

 its origin, remote from the others. The fold is thickened at 

 its end. Submedian simple. 



Head rough. Ocelli none. Antennae filiform, with joints 

 closely set, more than one-half as long as the fore-wings. 

 Labial palpi cylindrical, smooth, slender, much separated, 

 and depressed ; the second joint furnished with a few bristles ; 

 terminal joint slenderer than second, about one-half as long. 

 Maxillary palpi folded, 5-jointed. Tongue scarcely as long 

 as labial palpi. 



T. tricingulatella. Fore-wings gray, slightly dusted with 

 fuscous. At the base of the costa is a fuscous spot,' and at 

 the basal third of the wing a fuscous band, scarcely extended 

 to the inner margin. In the middle of the wing is a broad, 

 irregular band, dark fuscous internally and externally, of 

 a brassy brown colour. Near the tip of the wing are two 



