TINEID.E. ACHROIA. 293 



at the tip : legs moderate, occasionally the hinder pair elongated, and ciliated 

 within, with the apical spurs also long and acute. Larva slightly pubescent, 

 or naked, generally residing in a case formed of its food, and enlarged from 

 time to time ; rarely exposed, and, I believe, never subcutaneous : pi/pa either 

 formed in its original case, or in a cocoon ; occasionally subterranean. 



The insects of this rather extensive family differ in general in 

 their large stature from those of the foregoing one, and in these the 

 palpi are generally four in number, whereas in those they rarely 

 exceed two, and when they do, the additional pair, or maxillary ones, 

 are generally very minute, whereas in the Tineidae they are most 

 frequently exposed and very distinct, though in a few of the genera 

 they are not very apparent, without the denudation of the front of 

 the head ; the latter is generally clothed with elongate erect scales, 

 forming a sort of crest, and is very rarely smooth : the antennae arc 

 generally whitish, never exceeding the length of the body: the wings, 

 especially the posterior ones, are ample, undivided, and mostly 

 closely convoluted round the body during repose, the cilia of all being 

 rather short : brilliant metallic colours rarely prevail, the usual tints 

 being of a rather sombre hue, in which ochre, white, or buff colour, 

 with longitudinal marks, or varied irregular characters, are conspi- 

 cuous ; the posterior wings being generally plain. 



In the larva state some of these insects are very injurious to 

 human property, as hereafter referred to, destroying woollen clothes, 

 corn, our " honied stores," &c. : others are, as far as ascertained, 

 innocuous : many of them reside in cases, or little houses, which they 

 enlarge from time to time, and in which they change to pupa: in some 

 few instances the latter are subterranean, and the larvse reside within 

 the stalks of plants, but I believe none of them are subcutaneous. 



Genus CCCLVII. — Achroia, Huhner. 



Palpi four, all very short ; maxillary concealed in the scales of the forehead ; 

 labial slightly exposed and depending, the apex obtuse, and clothed with 

 scales : maxillte very short. Antennw short, slender, faintly serrated to the 

 apex, the basal joint broad, scaly ; head smooth, densely clothed with 

 depressed shining scales : eyes small : thorax rather stout, slightly ovate : 

 wings narrow ; anterior somewhat horizontally incumbent during repose, 

 sublanceolate, with the apex rounded, of plain hues and immaculate ; 

 posterior rather ample, subtriangular, folded ; cilia short : body rather 

 slender, and somewhat elongate; obtuse and tufted at the apex in the males; 

 ?toutcr, more elongate, and acute at the tip in the females : legs slender. 



