as well as by the dilated tarsi of the female intermediate feet ; 

 from the latter by the absence of the central spur on the an- 

 terior tibiae; and from both those genera by the trifid nervure 

 in the inferior wings and differences in the palpi. 

 The following are British species : 



1. instabilis Curt, in Phil. Mag. v. 4. — maculatus Don. v. 16. 

 pi. 548. 2. — atomaria Pict., Gmcl.P 



May, Southgate ; June, bushes and plants near the river, 

 Ambleside ; July, GlengarifF; several pair on the steam-boat 

 on Loch Derg and in Galway. As there is a P. maculatus Oliv. 

 it became necessary to change Donovan's name, and our insect 

 does not quite agree with Gmelin's description. 



2. hibernica Curt. Ochreous ; antennae with slender rings to 

 the basal joints, head thorax and abdomen fuscous; superior 

 wings with a few small obscure spots at the base, below the 

 disc and round the apex and cilia : expanse 12 lines. 



I took a male the end of July at Roundstone in Connemara ; 

 it is readily distinguished by its ochreous nervures. 



3. pellucidula Curt. Phil. Mag. — Iseta Pict. ? Head, thorax 

 and abdomen slale-black ; antennae very long, ochreous 

 spotted fuscous; wings semitransparent, superior obscurely 

 freckled with pale fuscous and ochre, margin spotted with 

 ochre from the stigma to the posterior angle, with 2 long 

 spots on the inferior margin and the legs ochreous: 14 to 15 

 lines. — Common in Perthshire in July. 



4. lanceolata Curt. Phil. Mag. Wings fuscous, superior slightly 

 hooked, clothed with shining ochreous pubescence, slightly 

 freckled, the posterior margin spotted fuscous : 13 lines. 



I took a male either in Scotland or near Ambleside. 



5. angustipennis Curt. Phil. Mag. Antennas slightly serrated 

 and annulated ; head and thorax slate-black, abdomen red- 

 dish black ; wings fuscous, superior with an ochreous tint, 

 an ochreous oblong spot before, and a round one at the pos- 

 terior angle, very distinct in the males; legs ochreous, darker 

 at the base: 10 to 13 lines. — I have taken several in Norfolk. 



6. fulvipes Curt. Brit. E7it. pi. 601 ? . 



Taken by J. C. Dale, Esq., the end of June, off a hedge, 

 with a brook running below it, by Muller's Copse, near Glan- 

 ville's Wootton. 



7. ventralis Curt. — angustata? Pict. Antennae shorter than 

 the wings, annulated ; head and thorax griseous ; abdo- 

 men slate-colour, beneath silky green or whitish ; wings 

 subdiaphanous fuscous, superior ochreous, with silky yel- 

 lowish pubescence and slightly iridescent, a large obscure 

 ochreous spot on the costa towards the apex, and another 

 on the interior margin beyond the middle: 6,} lines. 

 This makes an approach in habit to the genus Tinodes. I 



took both sexes in July on the steam-boat on Loch Derg. 

 The Plant is Char a vulgaris var. /3 (Common Stonewort). 



