118 TMay, 



the particular species before us, whilst absolute certainty may be at- 

 tained by taking the trouble to collect and rear the larvae. The 

 anatomical question, then, apart from its intrinsic interest, will be 

 chiefly of importance by serving as a Court of Appeal, if I may so 

 term it, before which we shall be able to bring any suspicious forms 

 we cannot make up our minds about. 



As all five occur within three or four miles of my own door, it is 

 more than likely that other species are yet waiting to be differentiated. 

 Indeed, there can be no doubt that I am fortunate enough to possess 

 such another even here, for I found last autumn a species, which in 

 its case and larval characters is so totally unlike any of the rest, that 

 it cannot fail to be new. As I hope to breed it in the course of the 

 coming summer, I will say nothing further about it now. 



They may be summarized thus : — 

 let. — Fore-wings moderately narrow, and moderately pointed. Case compound, 

 constructed partly of the rush flower, and partly of silk. Two species. 



(a) Sylvaticella, n. sp. — A large insect ; fore-wings greyish, unstreaked ; an- 

 tennae white. Flies in woods (hence its name), in May. Larva on 

 Luzula sylvatica ; two years in feeding up. 

 (5) AUicolella, Zell. — A small insect ; fore-wings yellowish, streaked with 

 white ; antennae annulated on the inner face with pale fuscous. In fields 

 and woods, in July. Larva on Juncus lamprocarpus, more rarely on 

 other species, in autumn and early winter. 

 2nd. — Fore-wings narrow and very pointed. Case simple. Three species. 



(c) Murinipennella, Fisch. — Fore-wings grey, streaked conspicuously with 

 white ; antennae annulated all round with dark grey. On commons and 

 flowery meadows, in May. Larva on Luzula campestris and multiflora 

 in the autumn. Case brownish-ochreous. 

 {d) C(Bspititiella, Zell. — Fore-wings grey, unstreaked ; costa conspicuously 

 white ; antennae annulated on the inner face with gi'ey. Flies in June. 

 Larva on many kinds of Juncus, rarely on J. glaucus ; full-fed at the 

 end of autumn. Case whitish, 

 (e) Qlaucicolella, n. sp. — Yery like ccPspititiella, but yellower ; antennae as 

 in ccespititiella, or sometimes in ? entirely white. Flies in July. Larva 

 on several kinds of Juncus, most partial to J. glaucus ; not full-fed till 

 the spring. Case whitish. 



C. SYLTATICELLA. 

 Exp. al., 5^ — 6i lin. Fore-wings greyish-ochreous ; costa paler in some lights, 

 but not distinctly white as in ccespititiella ; costal fringe at the apex ochreous. 

 Head and thorax greyish-ochreous (in all the species these parts appear to be of the 

 same shade of colour as the fore-wings). Antennae white. 



The largest species of the lot. The white antennae, the unstreaked 

 fore-wings, with, at the best, but an ill-defined whitish margin to the 



