134

Mr; R. M'Lachlan’s Monograph of the

short. Anterior wings long and narrow, somewhat dilated to-wards the elliptical apex; hairy clothing long and dense; fringeslong ; radius not bent; discoidal cell short and triangular, closedby an oblique transverse vein ; a transverse vein uniting the uppermargin of the discoidal cell to the radius, and two others placedbelow that cell (perhaps another more towards the base); forks2, 3, 4 and 5 present. Posterior wings not folded, much shorterthan the anterior and very narrow ; the costal margin suddenlyand acutely elevated about the middle; beyond this elevation themargin is slightly excised to the apex; fringes very long; nodiscoidal cell; perhaps one or two transverse veins ; forks 2, 3 and5 present. Legs moderately long, the intermediate tibiae andtarsi dilated in the female ; anterior tibiae with two minute apicalspurs; intermediate and posterior tibias each with two pairs ofrather long and unequal spurs. Abdomen slender. In the male,there is sometimes a pointed lobe from the middle of the uppermargin of the last segment ; app. sup. and inf. sometimes bothpresent, or the app. inf. are absent. In the female the apex ofthe abdomen is furnished either with a very short ovipositor, orwith a very long upeurved one.

Larva unknown ; frequenting slowly-flowing rivers.

The species are small, unicolorous, and difficult to separate,but the two here described cannot possibly be confounded.

1. Psychornia gracilipes, Curtis.

(PI. VII. fig. 4, neuralion ; PI. XIII. fig. 17, app*)

Anlicyra gracilipes, Curt. (*) Phil. Mag. p. 21C, 1 (1834); A.talipes, Curt. (*) Phil. Mag. p. 216, 2 (1834J ; A. subochracea,Steph. (*) Ill. p. 160, 3 (1836); A. ciliaris, Steph. (*) Ill.p. 160, 4 (1836); Ilag. (*) Ent. Ann. 1801, p. 12, 103;Psychornia annulicornis, Piet. Recherch. p. 222, 1, pi. 20,fig. 7 (1834) ?; Ramb. Hist. Nat. Nevrop. p. 500.

Antenna; whitish, annulated with dark fuscous. Head coveredwith dense yellowish pubescence. Palpi brownish. Mesothoraxreddish-brown. Anterior wings rather acute at the apex ; palegreyish-ochreous with long yellowish fringes. Legs pale-ochreous.Abdomen reddish-brown. In the male the only apparent appen-dices are the app sup., which are long and crooked with curvedtips. In the female the abdomen ends in a short, nearly triangular,upturned ovipositor.

Expanse of fore-wings 4—5J lines; the females the largest.

An extremely abundant species about some slowly flowing