1887.] . 167 



the first found, were also sent to me, and were of the long curly-wool 

 kind. Subsequently Mr. C. O. Waterhouse gave me three examples 

 of the large white ? sacs which he obtained at Folkestone Warren 

 and exhibited at the Meeting of the Entomological Society, Feb. 3rd, 

 1886 (Trans. Ent. Soc, 1886, Proceed., p. 1), and these are of the 

 same kind as those found at Bickleigh in October. 



We have then both of the forms of sac noticed by Signoret ; the 

 large long-wool one which he refers (and I think correctly) to JErio- 

 feltisfestucce, Fonsc. ; the smaller, felted, short-wool one is the Tl. 

 LicJitensteinii, Sign. I cannot find that Signoret ever made his pro- 

 mised investigation, which is to be regretted. He may be right in his 

 suggestion of two species, but the conclusion I arrived at, pending 

 further elucidation, was that the felted sacs found in July are either 

 the same as the long-wool ones found in October, but abraded during 

 the winter, or, more probably, that they have been produced after 

 hibernation from the eggs contained in the latter, and are the growth 

 of the year ; this latter proposition is more consonant with the economy 

 of the Lecanina. The question is open for future investigation ; in 

 the mean time we have, nominally, two species. 



LiCHTENSIA VIBURNI. 



Lichtensia vibiirni, Sign., Ess. Cochin., p. 204, pi. x, fig. 7 and 7«. 



Larva-scale pale citron-yellow, oval, flat, with a long median fusiform space, and 



four (two on each side) slight anterior lateral carinte. 



Length, 2'25, breadth, 1 mm. 



(J scale (the larval covering having been thrown off) whitish, transparent, 

 long-oval, the median space as in the larva, but dark or brown and opaque, with 

 slightly raised edges ; from its anterior end two strong carinse proceed obliquely to 

 the margin in a V"fo'''Ui and on each side two slighter carinse, of which the one is 

 about the middle, the other posterior ; all the carinse white. 



Length, 2'25, breadth, 1'50 mm. 



<? imago orange-yellow ; head, and anterior and posterior margin of the thoracic 

 depression broadly, pale brown, or the head dark brown ; eyes and ocelli black ; 

 antenn£e yellow, very hairy, of ten joints, 3rd to 6th long, sub-equal, the others 

 short ; wings whitish, transparent, along the radial nervure roseate ; halteres short, 

 with one terminal hair ; the body with two long white terminal filaments ; legs 

 dingy brownish. Exp. of wings, 3 mm. 



? adult scale pale citron-yellow, ovate, flat-convex, an indistinct longitudinal 

 row of short, transverse, light brownish marks on each side of a narrow, clear median 

 space ; surface (under a lens) finely punctate, more strongly, or even crenate, on the 

 brownish marking. Under-side all pale. Scale finally covered with a cottony 

 pellicle. Antennse of eight joints, the first two short, 3rd longest of all, 4th and 5th 

 sub-equal, shorter than 3rd, 7th shorter, 6th and 8th nearly equal, the latter with 

 gradate sides, and hairy. Length, 3*50 — 4"50, breadth, 240— 3 mm. 



