PSYCHOMID.E. CHIMARRA. 



19l 



The only indigenous genus of this family, and may be recognised 

 by having the palpi very long, with the 2nd and 3rd joints consider- 

 ably lengthened and stoutish, the terminal one slender : one species 

 only occurs in Britain. 



Sp. 1. marginata. Plate xxxiii. f. 4. var. 9. — Fusco-nigra, alls costa, margine 



postico, lineisque aliquot anticaruni ochraceo-Jlavis. (Long. corp. 4 — 5 lin. ; 



Exp. Alar. 6—9 lin.) 

 t'hr. marginata. LinnL — Chi. marginata. Steph. Catal. 318. No. 3621.— 



Curtis, V. yiW. pi. 5Q\. 

 Brown-black: head and basal joint of the anteniise bright ochreous ; crown 



black; thorax with its anterior edge, or the collar, bright ochreous; 



anterior wings with the costa, the extreme hinder margin, and one or two 



of the inner longitudinal nervures, bright ochreous-yellow, the other nervures 



dusky ; posterior wings, with the upper portion of the costa, bright ochreous ; 



legs ochreous, the anterior pair and tips of the hinder tibiae palest ; the base 



of the femora and apex of the anterior tarsi blackish. 

 Some examples — as in the one figured — are of a paler hue, and have the yellow 



edgings to the anterior wings, the oblique nervures, and the collar of a faint 



brownish-ochreous. 



Found on the banks of torrents in England and Ireland ; about 

 Dunlough Gap, near Killarney, and near Plympton in Devonshire, 

 very abundantly ; also in Cumberland and South Wales. 



Family VII.— LEPTOCERIDiE, Leach. 



*AntenncE slender, considerably longer than the wings, sometimes four or five 

 times as long, setaceous : maxillary palpi similar in the sexes, 5-jointed, 

 long, and generally hairy : wings furnished with several transverse nervures, 

 mostly disposed in an irregularly waved line, a little beyond the middle ; 

 anterior pair very long and narrow, posterior smaller and much folded 

 within : abdomen moderate or short, rarely long : legs short, or somewhat 

 elongate : tibiae with spurs at the apex, and the two hinder pair frequently 

 with others below the middle. Larva long and slender, without external 

 lateral respiratory organs, the latter generally short, the four anterior 

 segments and legs bristly, the latter sometimes slender and elongate, at 

 others short and stout : it inhabits an elongate moveable case, in which it 

 changes to pUpa. 



The insects of this family are usually of a gregarious nature, 

 and may be sometimes observed, especially towards evening, in 

 large flocks, like gnats, sporting about, near the edge of slowly 

 running and quiet streams ; they are rendered very conspicuous by 



