208 MAXDIBULATA. TIIICHOPTER A. 



also in other parts within the metropolitan district, and in the New 

 Forest and in Scotland, but not very plentifully. 



■ Genus XXX.— HALESUS mihl 



Antennte setaceous, short, somewhat remote, longer than the body, and as long- 

 as the wings : palpi slightly pubescent ; maxillary of the males 4-jointed, of 

 the females 5-jointed, the terminal joint long and somewhat acuminated ; 

 labial 3-articulate in both sexes, the terminal joint ovate, most robust in the 

 males: Aeai transverse, /"ro^t^ rather prominent : e^ej large, globose: thorax 

 ovate, collar distinct : wings considerably deflexed during repose ; anterior 

 elongate, lanceolate, with the costa somewhat dilated towards the apex, the 

 hinder margin rounded, nervures moderately distinct; posterior very ample, 

 transparent, and much folded : abdomen of the males slightly compressed, 

 furnished at the apex with short horny appendages ; of the females more 

 robust, and somewhat cylindric, with the apex obtuse : legs rather stout : 

 iibicB armed with numerous short spities, and two spurs at the apex ; the 

 two hinder pair each with a pair below the middle; hinder tibiae straight. 



Larva very robust, the head and following segments scaly, the 3rd dilated, the 

 body cylindric: case formed of pieces of wood and stones, connected with 

 much regularity. 



The very ample posterior wings of the insects of this genus, and 

 the large anterior ones, of which the costa is somewhat dilated 

 towards the apex, and the hinder margin distinctly rounded, will 

 sufficiently distinguish them from the allied genera ; and from Lim- 

 nephilus this last character alone will enable the reader to know 

 them, inasmuch as in that genus the hinder margin of the anterior 

 wings is always truncate, and sometimes deeply excised. 



Sp. 1. digitatus. Ochraceo-hrunneus, antennis briinneis, alis anticis pallidis 

 nervis albidis brnnneo 711 ar (/in at is, areolis post ids lined longitudinali Brunnel. 

 (Long. corp. 7—9 lin. ; Exp. Alar. 18 — 24 lin.) 



Phr. digitata. Schranck, 309. No. 616.— N. G. (371). (PLilenus, N'om.) 

 radiatus. Leach MSS.—Steph. Catal. 321. No. 3670. 



Pale ochreous-brown : head with a longitudinal tawny streak ; palpi pale ; 

 antennae brown ; thorax also brown and pubescent, the anterior margin 

 rather tawny ; anterior wings ample, the nervures whitish-ochre, edged 

 with brown, forming a border to each areolet, the groundwork of which is 

 whitish-ochre, in some with paler spots and brown lines, and the areolets 

 on the hinder margin have a more or less distinct brown central line, pro- 

 ducing a radiated appearance ; posterior wings very transparent pale 

 yellowish, immaculate ; legs pale tawny, with black spines. 



