1888.] ]_47 



Posticana, Zett., which is of about the same size as duplana, Hb.,has the hind- 

 margin less oblique, more curved ; the apex less prominent ; and both the head and 

 thorax rusty ; the basal two-thirds being more or less obscurely dark, and the apical 

 one-third rust coloured. 



From turionella, L., they may both be separated at once by their 

 much smaller size, and by the colour of the hind-wings, which, in 

 turionella, L., are silky whitish, darker only towards the hind-margin, 

 in the other two entirely dark grey in both sexes. 



Of posticana, I append a more detailed description :— 

 Expanse of wings, 12 — 16£ mm. Antennae grey-brown. Palpi grey beneath, 

 above rust coloured, like the head ; thorax the same, more greyish behind. Legs 

 greyish-yellow, with pale-ringed tarsi. Abdomen ashy-grey, the last segment yel- 

 lowish. Fore-wings dull leaden-grey, with lighter ashy-grey, slightly lustrous, 

 transverse lines, which, in the most clearly marked examples, form a paler transverse 

 fascia just beyond the base, and a broad one just before the middle, which latter is 

 always traversed by a fine dark line down its centre. Apex, to a moderate extent, 

 rusty-brown, which tint also extends along the hind-margin to the anal angle, and 

 is traversed towards the costa by two or three whitish-grey abbreviated transverse 

 lines ; fringes dark grey. Hind-wings in both sexes alike, brownish-grey, not paler 

 towards the base. 



TJnder-side brownish-grey, the fore-wing rather deeper than the hind-wings ; on 

 the costa before the apex are four yellowish spots, the outermost of which is divided 

 by a dark streak. 



The above description is in the main taken from Wocke's account 

 in the Stettiner Entomologische Zeitung, for 1862, pp. 50, 51. The 

 synonymy, as given by Wocke, in the Catalogue, is as follows : — 



Posticana, Zett., Ins. Lap., p. 982 ; Wo., S. E. Z., 1862, p. 50 ; Hein., 

 p. 94. 



Sylvestrana, Hein., p. 95. 



Mulsantiana, Etz., S. E. Z., 1848, p. 266 (larva). 



To these must be added : — 

 Posticana, H.-S., Corr. Bl. Zool. Min. Ver., 1863, p. 121 ; De Graaf, 



Tijd. v. Ent., 1869, p. 204 ; Snell., Microp., p. 257. 

 Duplana, Wilk, p. 221 ; StD., Man., 2, 248. 

 Turionella, var., Barrett, Ent. Mo. Mag., xxi, p. 126. 



It should be noted that "Wilkinson's description of the hind-wings 

 agrees neither with duplana nor posticana, and would seem to have 

 been made from a small turionella. The larva, like that of turionella, 

 is said to be full-fed in March, in the young shoots of Pinus sylvestris. 



13, Cheyne Eow, Chelsea, S.W. : 



November 9th, 1888. 



N 2 



