266 [May, 



Zi. dispar, Mg. : a very common species in many localities in 

 Sussex, Kent, Hants, and Herts. I have seen Walker's original types 

 of L. dispar and 2'>^in(;tum, which are undoubtedly the same species. 

 Immature examples of this species sometimes have the legs coloured 

 almost as in L. lineola, but the more pellucid tint of the wings at once 

 identifies them. 



L. lineola, Mg. : this is slightly the largest British species of the 

 genus, and may be known at once by its yellowish-tinged wings with 

 a faint but quite distinct stigma. I have taken it in Sussex, Hamp- 

 shire, and Cambridge. 



L. LINEOLELLA, «. .ip. ( <? $ ). — Ferruginea, nitida ; thoracis antice lineola 

 dorsali nigro-hrunnea ; capite cano alls suhflavido-hyalinis, stigmate vix ullo ; 

 pedihus flavis , femoribus apice obscuris. Long. 9 — 10 mm., alar. exp. 19 — 21 mm. 



S ■ Back of head blackish, covered with -whitish-grey tomentum, becoming 

 somewhat silvery towards front, and also bearing yellowish-red hairs ; the aiiteunsB 

 are shortish, reaching about halfway down the thorax when bent back, and have the 

 basal joint blackish, the second roundish, blackish at base but dull ochreous at tip, 

 succeeding joints oval, becoming elongate-oval, dull ochreous working up to darkish 

 brown, bearing bristles about as long as each joint ; palpi and rostrum brownish- 

 black. 



Thorax shining ochreous, with a black central line in front. 



Abdomen well clothed with reddish-yellow hairs, usually with a dark line down 

 the sides, and rather obscure above before the genitalia, but Jiothing at all like the 

 blackish band in L. ferruginea, $ ; the genitalia the same colour as the abdomen, 

 bearing yellow pubescence, the genital hooks not large and still the same colour, an 

 internal piece is black, and there are no^[noticeable reddish-yellow bristles on the 

 last segment of the belly as in L. ferruginea, (J . 



Legs ochreous, becoming indeterminately dark towards the end of the femora 

 and onwards, the base of the tibiae perhaps a little paler ; even in pale specimerB 

 only obscure darkening and no determinate markings, while in dark specimens the 

 darkening begins before the middle of the femora, but very indeterminately. 



Wings pale yellowish-hyaline (i. e., not as yellow as in L. ferruginea and lineola), 

 with scarcely a vestige of a stigma ; veins somewhat yellowish-brown, marginal 

 cross vein about the middle of the upper branch of the radial fork, the basal portion 

 of the radial (= the space between the end of the praefurca and the radial fork) 

 about a third as long as the upper branch of the fork, the branches of the forked 

 vein from the discal cell are almost the same length as their petiole, the last vein is .'' 

 very little undulating, very slightly incurved at its end. The base of the praefurca 

 often has a trace of a recurrent vein, and the end of the mediastinal vein sometimes |- 

 runs up so abruptly to the costa, that it seems as if a cross vein united it to the '" 

 costa, while it gently curved on into the subcostal vein. 



5 very similar, but the ends of the femora are more determinately blackish. 

 One specimen caught at Inveran on July 11th, 1886, has the disc of the thorax i 

 nearly all blackish, and is altogether a very dark specimen. 



