170 BRITISH LEPIDOPTERA. 



front, and lying closer to resting-surface at anus. The seg- 

 mental incisions are not well marked, but the five subsegments 

 of each abdominal segment are very clearly defined whilst those 

 of the thoracic segments are less clearly marked, although there seems 

 to be the same number. The tubercles form raised warts (bear- 

 ing many hairs) dark-coloured and chitinous ; on the thoracic 

 segments they are especially large and strongly developed, notably 

 iii and vii on the prothorax, i and vii on the meso- and 

 metathorax, and i on the 8th abdominal. The dorsal tubercles 

 (i and ii) are set at the corners of an oblong, i on the 2nd 

 subsegment, ii on the 4th subsegment, on the meso- and metathorax 

 as well as on the abdominal segments ; i is from two to three 

 times as large as ii, iii about equal to ii is on the third sub- 

 segment. The spiracles are small, and each appears to be directly 

 below iii, but at some little distance ; really it is placed near 

 the junction of the second and third subsegments, which are not 

 noticeably divided hereabouts. Tubercles iv and v form a 

 somewhat elongated wart about the same size as iii, situated 

 on the third subsegment, slightly beneath, but further back than, 

 the spiracle; a small, single-haired, (primitive) tubercle (?vi) is 

 present below and anterior to spiracle ; vii is marginal, and 

 consists, on the abdominal segments, of two large warts side by 

 side ; on the thoracic and 8th abdominal segments there is only 

 one very large wart present; much elongated on the latter, and 

 doubtless formed of the two present on the other segments, united ; 

 on the thoracic segments it is large and circular, and probably 

 consists of only one of those present on the other segments. A 

 large prespiracular wart (slightly larger than iii), at the same 

 level as the spiracle, is present, whilst beneath this prespiracular 

 in vertical line, are three primitive, simple, single-haired tubercles as 

 in the larva of Eatricha quercifolia, etc. ; ii on the 8th abdominal is a 

 large, single-haired, primitive tubercle, not a wart. On one larva 

 there is a single - haired tubercle on the 2nd subsegment of 

 the abdominal segments just below iii (Bacot. August 23rd, 1900). 

 Second instar. The dorsal tubercles have flattened and spread, 

 secondary hairs are abundant on the dorsal area, their bases are 

 surrounded by black, and remind one of the shagreen tubercles' 

 of Dimorpha versicolora, and the spreading of the black colour from 

 the bases ot the hairs, in the position of the dorsal tubercles, form 

 black spots that remind one of the dorsal spots of the larva of this 

 species ; the subdorsal line is strengthened on abdominal segments 

 1 — 7 by a bright yellow triangular blotch, the apex of 

 which points downwards and joins one series of the oblique 

 stripes ; the subspiracular tubercles are large, and the hairs 

 grow downward in the manner of those of the larva of Eutricha 

 quercifolia ; the thoracic segments are rather larger than the ab- 

 dominal ; the meso- and metathorax have a velvety black dorsal 

 area, in the centre of which ( partly on meso- and partly on meta- 

 thorax) is a cream-coloured, roughly diamond-shaped mark, and, 

 as in previous stage, there is a small, diamond -shaped white- 

 (previously cream-) coloured spot on the subdorsal area of the 

 meso- and metathorax (compare with larvae of Dcndrolimus pini and 

 Lasiocampa qucrciis); on the mesothorax is a mediodorsal tuft, 



