24 BRITISH LEPIDOPTERA. 



claspers very large, tapers slightly from head to anus ; 9th abdominal 

 segment long ; the prothorax large, scutellum very large and developed 

 into two cushion-like warts, which give rise to long and large black 

 hairs ; ear-tubercles very large ; prothorax divided into 2 (? 3) subseg- 

 ments, a very large anterior, and a small posterior (possibly sub- 

 divided) ; the thoracic segments longer (front to back) than the 

 abdominal. The tubercles form large many-haired warts, i and ii are 

 large, and appear to be placed at corners of an imaginary square on 

 thoracic, as well as abdominal, segments, i larger than ii, iii also is a 

 large many-haired wart ; iv and v form a subspiracular, many- 

 haired wart, whilst there is a similar supplementary prespiracular wart. 

 The dorsal hairs are mostly black and shiny and slightly serrated, very 

 large and long ; many of the lateral hairs are white, finer and smaller 

 than the dorsal. There is a broad, whitish, dorsal band, the dorsal and 

 subdorsal areas are dark chocolate-brown, and the lateral area white, the 

 oblique stripes appear as dark streaks bordered with white, suggesting 

 the origin of the double obliques in Lasiocampa querciis, Cosmotriche 

 potatoria, &c. The dorsal band has a chain of yellow spots in it, 

 one of each of the abdominal subsegments is yellow in the line of the 

 white band. This yellow section appears to be that of the 4th sub- 

 segment, and the band is much broader here than elsewhere. The 

 yellow spots end on the 7th abdominal. The anterior trapezoidals on 

 the 8th abdominal are large and very close together, on the 9th they 

 are also large. The lateral tubercles on the abdominal segments 

 appear to be the supra- sub- and the prespiracular, the latter very far 

 forwards. In the second stadium the head is black, shin}-, with a 

 number of stout, black hairs, the clypeus pale cream colour, except 

 for a central (vertical) brown band ; the scutellum, not chitinous in 

 appearance, forms two raised cushions, one on either side of the 

 median line, each bearing many long stiff black hairs (i.e., very similar 

 to scutellum in larva of L. quercus in first stadium, except for the size 

 of hairs) ; the abdominal segments are divided into five subsegments, 

 the thoracic are difficult to determine. The dorsal tubercles well 

 marked (more so than in L. quercus in 1st stadium) ; i larger and 

 more pronounced than ii, which are not only smaller but less wart-like. 

 The lateral tubercles are very large, especially on thoracic segments 

 (on prothorax they form the large ear-tubercle), and consist o\ supra- 

 sub- and prespiracular, whilst the basal tubercles are large, and carry 

 several hairs ; there are also present several small single-haired tuber- 

 cles in a line with vii, but on the 1st subsegment ; the prespiracular 

 tubercle is on the 1st subsegment ; i is on the 2nd subsegment, iii and iv 

 (? and v) on the 3rd, ii on the 4th ; it is perhaps not quite correct to state 

 that iv is on the 3rd subsegment, as the subsegments become obscure 

 before they reach the spiracular area (the spiracles are quite indistin- 

 guishable in this stadium). The coloration is much as in the 1st stadium 

 — a broad, white mediodorsal longitudinal band, with a yellow blotch in 

 it on each segment, the dorsal area on either side of a leaden or slaty 

 hue, mottled with black, and there are traces of a white subdorsal 

 line ; lateral area also slate coloured, with double oblique white stripes 

 (sloping from head to anus) on abdominal segments [—8 on the 

 thoracic segments, and on abdominals 8-10 is a broad white lateral 

 band, at same height (so that oblique Stripes are possibly due to 

 the splitting up of longitudinal band); the stripes are conspicuous, 



