18fl6.] 



103 



2. IlydroptUa sparsa, Curt.— Many examples from Frais Vallon and Mirabcan, 

 (November, 1892) ; conduit near Fort St. Germain (May 29th and 31st, June 3rd, 

 1893) ; and Fontaine Chaude, near Biskra (April 6th, 1894). 



3. Hydeoptila campanulata, n. sp. 



Antenna about 32-jointed in the $ (25-jointed in $ ), fuscous, but with pale 

 pubescence, which gives them a whitish look in certain lights ; there is also a long 

 ante-apical fuscous mark. Clothing of vertex yellowish-white ; palpi and fore-logs 

 yellowish, the latter apparently marked with fuscous ; the two hinder pairs of legs 

 paler, almost white. Fore-wings black or blackish-brown, with many white mark- 

 ings, particularly some spots at the base, an 

 ante-median vague fascia, showing large 

 spots on anterior and posterior margins, 

 a similar median fascia, and a strongly 

 marked pale sub-apical crescent, followed 

 by an equally strongly marked black apical 

 spot ; the raised hairs are mostly whitish, 

 and these help to give the wings a generally 

 pale aspect, except towards the apex. 

 Hind-wings grey, with iridescent con- 

 colorous fringes. 



At the apex of the abdomen of $ 

 there is a very large dorsal plate, some- 

 what campanulate in outline, the apical 

 margin trifid, the median production, the 

 largest, rather obtuse, the side angles acute 

 when viewed from above ; seen from the 

 side the median prolongation is nearly 

 vertical and obtuse. From the sides of 

 the plate arise two small appendages, 

 curved and acute. The inferior appendages 

 are larged blade-shaped, tip falcate. Penis 

 near its apex having a sharp hook arising 

 at a nearly right angle, and similar in this respect to several other members of 

 the genus. Exp. of <? , about 6 mm. ; ? slightly larger. 



In many examples from the river at Biskra just above the 

 Barrage (May 29th, 1893, and February 8th, 1894), and Sources 

 d'Oumache, near Biskra (June 4th, 1893) ; Constantine (October 3rd, 

 1893). 



Of the sparsa group, but abundantly distinct from that species 

 on account of the median prolongation of the dorsal plate, and the 

 iaferior appendages are also broader. The wings, in the ^ at least, 

 are noteworthy on account of the strong relief into which the apical 

 spot is brought by the pale crescent which bounrls it inwardly, 

 reminding one of certain minute Leindoptera. 



