2U8 ' [May, 



emerging in July. Zeller's description agrees closel}'-, but it is quoted 

 twice in Hofmann's " Kleinschmetterlingsraupen," on p. 58, correctly, 

 for this species, and on p. 41, for Penthina corticana = picana. 



PcecUsca profmidana, W. V. — Larva active, cylindrical, but rather 

 tapering at each end, and with well-divided segments. Shining dark 

 green or bottle-green, with faintly marked black dots and strong hairs, 

 head pale horn-colour, plates of the colour of the body. 



In rolled-up oak-leaves, feeding through June and emerging late 

 in July and in August. Zeller says feeding also on Pr«?««<s^jrtrf?<s. 

 He describes the larva — probably younger — as having the spots large 

 and the head and dorsal plate shining black. 



Pcsdisca occultana, Doug]. — Larva resembling that of a Sciajyliihi, 

 sluggish, nearly cylindrical, but with the anal segments rather attenu- 

 ated. Slate-grey, with the segmental divisions paler, spots large, 

 black, and very prominent. Head flat and rather broad, jet black, as 

 also are the plates and feet. 



Found feeding on larch on the Yorkshire moors in June by Mr. 

 Eedle, and sent by Lord AValsingham. Pupa light brown. Moth 

 emerging in July and August. 



Baron von IN^olcken records rearing this species (under the name 

 oi pinicolana) from silver fir, Pimis picea. 



Pcedisca opldhalmicana, Hiib. — Larva short, thick, and wrinkled 

 with swollen segments. Dirty greenish-W'hite, spots olive-grey, promi- 

 nent, head shining black, dorsal plate olive-brown with a white collar, 

 last two segments retracted, anal plate light brown. This larva was 

 sent by Mr. J. B. Hodgkinson, of Preston. It fed in June on aspen, 

 rolling up the leaf and eating the substance of the upper skin. It 

 died after forming a tough cocoon of whitish silk, but others were 

 said to have been reared. 



This larva is described by Treitschke as " greenish-white, with 

 small grey raised dots. Head and dorsal plate shining black, anal 

 plate grey, belly whitish. In May, in rolled leaves of Popuhts tremiiJa. 

 Pupating in an earth-cocoon, pupa light brown." This description is 

 evidently from a younger larva than I have seen. 



Pcedisca Solandriana, L. — Larva sluggish, flattened and swollen 

 in the middle. Dull white, tinged on the back with faint bluish-grey, 

 which is interrupted at each segmental division. Head pale brown, 

 with dark brown jaws, plates both whitish. Feeding between drawn- 

 together leaves of sallow early in June. Emerged in August. 



