GASTROPACHA ILICIFOLIA. 1 9.3 



short ; on sides in long white fascicles (a few dark interspersed) 

 curving downwards. Head pale drab, the black atoms on it in 

 longitudinal bands. On the second segment, a reddish blotch 

 bordered with black atoms ; a series of markings something 

 like the ace of clubs down the centre of the back, embracing the 

 dorsal line, formed of thicker black atoms, blackest on the fourth 

 segment, into which run lateral stripes of black atoms, from 

 each black spiracle directed backwards. An indistinct spiracular 

 line of black atoms. Legs reddish with black spots ; claspers 

 the colour of the body, with a black stripe on the upper surface, 

 orange underneath. Along the ventral line a chain of black 

 spots, very large and conspicuous from commencement of the 

 claspers to the anal segment, gradually smaller towards the head " 

 \Ent. Mo. Mag., i., p. 121 (1864)]. Hofmann describes the larva 

 \Raupen Grossschmett. Eur., p. 54) as "rusty-coloured with black dorsal 

 stripe, in which appear white spots." Ochsenheimer describes it {Die 

 Schmett., hi., p. 241) as follows : " When full-grown it is very 

 supple, long, extended, with short hairs on the back, and longer 

 on the sides, and with a bunch of hairs on the penultimate 

 segment. I know two varieties which are probably sexual: ^1) 

 The one is rust-coloured, with two large white dots on each 

 segment, which are bounded inwards by a black central line that 

 widens out towards them ; on the 2nd and 3rd segments stands 

 a red-yellow transverse stripe dotted with black on both sides, 

 whilst above the legs it is grey ; the head brownish-grey, with 

 rust-coloured hairs. (2) The second variety has on the dorsum red- 

 yellow spots, interrupted by black transverse lines ; the spots are 

 connected by a black median line, and are, on both sides, broadly 

 white-margined ; above the legs stands a blue-grey stripe ; 

 the head is black-grey." Hering says {Stett. Ent. Zeifg., ii., p. 59) 

 that the larvae he obtained at Stettin resembled the figure of Hiibner, 

 and were yet essentially different in some aspects, but he failed to 

 figure it or describe the differences. 



Cocoon. — The cocoon is spun up among the foodplant, almost 

 surrounded by leaves, which are fastened flatly and closely to the 

 outer part of the cocoon. The latter is composed of loose flossy 

 silk, pale greyish or dirty white in colour. The inner part of 

 the cocoon more closely woven, reminding one a little of that of 

 Cosmotriche potatoria, the upper end being much more closely spun 

 than the other. The lining of the cocoon is formed of loosely woven 

 dirty whitish (inclining to brown) silk. The cocoon is of a soft yield- 

 ing texture, in this respect also resembling that of Cosmotriche potatoria, 

 and not firm and solid like that of Lasioeampa quercus. The pupa is 

 firmly fixed at the lower end of the cocoon by the cremaster (Tutt). 

 Bacot notes : " The cocoons are composed of pale grey-brown silk, 

 loose and flossy on the outer side, smoother, closer and whiter on the 

 inner side ; a few larval hairs are felted in the silk. Of two cocoons 

 examined, the slightly larger one is composed of greyer silk, and the 

 grey dust, that is plentifully sprinkled over both pupae, is paler and less 

 brown in this than in the somewhat smaller one. This may indicate a 

 difference of sex, although the sexual organs of both pupae appear to be 

 quite similar." Chapman observes that the cocoon opens by a transverse 

 slit that has been prepared by the larva. Ochsenheimer describes it as 



