190 MANDIBULATA. TRICHOPTERA. 



immaculatis, pedibus antennisque ochraceis. (Long. corp. 2 lin. ; Exp. Alar. 

 7 lin.) 

 Mor. minor. Steph. Nomen. 2d edit. Appendix. 



Ochreous-brown : eyes black; wings hyaline, iridescent, immaculate, pilose; 

 legs and antennae pale ochreous, the latter faintly annulated with fuscous. 



Taken, in June, in Devonshire. 



Family VI.— PSYCHOMID.E, Curtis. 



Antennoe stoutish, not exceeding the length of the wings : maxillary palpi 

 similar in the sexes and 5-jointed, the terminal one elongate-filiform : wings 

 narrow, obtuse, or acute, without transverse nervures ; anterior with three 

 or four bifid ones on the hinder margin ; posterior small, resembling the 

 anterior, but not folded within ; cilia of all short : abdomen stoutish and 

 short: legs moderate : anterior tibice sometimes without spurs at the apex, 

 two hinder ones each with a pair at the tip, and a second pair towards the 

 middle. 



The insects of this family, like the Hydropsychidse, have the 

 terminal joint of the palpi very long and slender; but from them 

 they may be known by the slenderness of the wings, which are totally 

 destitute of transverse nervures : the only indigenous genus frequents 

 mountain torrents, which I believe to be the case with the other 

 genera of this family. 



Genus XXIV.— CHI MARRx\, Leach. 



Anlennw scarcely so long as the wings, especially in the females, somewhat 

 robust, the basal joint longest, subovate, some of the following short, the 

 remainder oblong : palpi rather long, maxillary with the 2nd and 3rd joints 

 very long, the apical one slender ; labial with the terminal joint nearly as 

 long as the two others imited, and filiform : head subglobose : eyes globose, 

 very prominent : thorax ovate : wings slightly deflexed during repose, 

 destitute of transverse nervures ; anterior elongate, narrow, rounded at the 

 apex, with about nine longitudinal nervures, of which the four which extend 

 to the hinder margin are more or less deeply bifurcate: posterior ii^jk^'s 

 small, not folded : abdomen short, furnished with a short recurved process 

 at the apex in the females : legs rather long and stout, anterior the shortest, 

 their tibiae without spurs at the tip, the others with a longish pair at their 

 apex, another pair above the middle in the intermediate, and the posterior 

 with a pair below the middle: the intermediate tibiae of the females at the 

 apex, and the basal joint of their tarsi, slightly dilated. 



