SOLENOBIA LICHENELLA. 179 



[Bacot, described March 26th, 1899, from larvas sent by Hamm, and 

 collected near Wellington College.] De Geer states that the adult 

 larva has very short prolegs, but the true legs are very long and 

 yellow-brown in colour. The head and prothorax also yellowish-brown* 

 and shiny, and the mesothorax is of a darker brown, equally 

 shiny ; these two segments are covered dorsally with a common 

 shield ; the remainder of the body is membranous, dirty grey mixed 

 with brown, with some slightly raised oval plates, the skin is smooth, 

 whilst one only observes hairs on the head, pro-, and mesothorax. The 

 abdomen is larger than usual posteriorly. The larva walks with diffi- 

 culty when out of the case, the venter is dragged because the shortness 

 of the prolegs is not suitable for walking, but only for clinging to the 

 silk with which the case is lined. 



Pupa. — The (living) pupa is about 3mm. in length, 1mm. in width, 

 of a black-brown colour dorsally, and a much paler yellow or greenish- 

 brown tint ventrally, the 8th, 9th, and 10th abdominals also of a paler 

 brown colour, and apparently united somewhat closely. The seg- 

 ments appear to bear the same number of setae (and in the same 

 relative positions) as in the larva. The chitinous dorsum shiny, finely 

 shagreened, striated transversely ; the frontal area rounded, the pro- 

 thorax very small ; the mesothorax well-developed, the forewings 

 extending to the middle of the venter across the 3rd thoracic segment, the 

 1st, and greater part of the 2nd, abdominals ; the metathorax small, the 

 hindwings just covering the spiracle of the 1st abdominal ; the abdominal 

 segments 1-6 almost equal in width and bulk, 7-10 rapidly narrowing 

 to the rounded anus ; the tubercles almost as in larva — i on the 

 posterior margin of the transverse patch of spines on anterior margin 

 of segment, and distinctly nearer the median line than ii, iii large, iv 

 larger than v and a little higher and posterior to it, vi single, vii ap- 

 parently with three hairs, viii ventral to proleg scar. The two dorso-anal 

 spikes are distinct. The incision between 2-3 movable dorsally (soldered 

 ventrally), those between 3-4, 4-5, 5-6, 6-7 movable. When on the point 

 of emergence the dark bands of the imago show distinctly through the 

 pupal cuticle, which, when empty, is somewhat uniform in its tint and 

 general delicate texture, the darker areas being in reality due to the 

 contained female. Dorsally. — The prothorax and anterior part of meso- 

 thorax, frontal, the forewings with a strongly defined costa and inner 

 margin, the metathorax distinctly continued backwards to join base of 

 hindwings. The metathorax and abdominal segments 1-6 are very 

 characteristically formed as distinct hoops, depressed centrally, and 

 raised at the segmental incisions, the anterior rims of segments 3-8 

 being roughened and provided with a patch of minute spines, about 

 five deep centrally. There are recurved hairs on abdominal segments 

 8-10, six on either side of 8 and 9, and four on either side of 10. The 

 crcmastral area smooth, but bears two well-marked dorso-anal spikes, 

 one on either side of the terminal dorsal edge. Laterally. — The 

 spiracles are small, have a faintly raised rim surrounded by a slight 

 depression, placed rather high up on the side of the segments. 

 Ventrally. — The dorsal head-piece comparatively small ; two bristles at 

 base of labrum on either side, very long, and deflexed almost to the point 



* One suspects that De Geer was describing a larva that had just moulted. 

 He describes the young larva as having a " brown " head, and the head, in the 

 lai'Yte of this genus, tends to get darker at every moult. 



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