Insects. 9637 



another along the sides, above the stigmata, greenish pale gray ; be- 

 tween these a broader gray line, little spines on the folds, as in fig. 3, 

 giving the gray a striped appearance. Next to the pale line on the 

 side is an equally narrow black one, then a row of pale gray knobs 

 almost touching each other, and below these, just above the legs, a 

 row of larger black projecting knobs. The thoracic legs were again 

 black ringed with white, the abdominal legs greenish gray, mostly with 

 two black spinose transverse lines; the anterior segment entirely 

 greenish gray at the sides, the last entirely black and strongly spinose. 

 Tlie ventral surface greenish gray. Figures 5, (> and 7 are drawn from 

 these larva; ; fig. 5 represents three of the middle segments of the body, 

 in profile, and fig. 6 the last two segments seen on the dorsum. 



The longest of these larvas were scarcely more than one centimetre 

 in length ; they frequently assumed a very singular posture, curling 

 the terminal segments round a twig, and, projecting the body at right 

 angles thereto, they bent the head and fore part of the body back 

 against the dorsum, the thoracic legs being extended, thus putting 

 themselves in the remarkable attitude which I have endeavoured to 

 represent at fig. 7. 



These larvae were also entirely pale gray after the last moult, and 

 spun up among the leaves. Among the cocoons I observed but very 

 ievr pure while ones ; the greatest number had a yellow or ferruginous 

 tint, some were even entirely obscure yellow. From all these charac- 

 teristics I came to the conclusion that this latter brood was healthier 

 and stronger than the former. _ From both broods the imagos made 

 their appearance in September, being three months after spinning up. 



The male of t1)is species is represented at fig. 8; it is only 7 milli- 

 metres long without the antennae, slender, with a very wide head, 

 entirely shining black and smooth, the exceptions being, as regards 

 the tint, the antennae, the legs and the ventral surface, which are pale 

 red. The antennae, which are very long, have twenty-five joints (Hartig 

 says twenty-three to twenty-five), and are pectinated on both sides, 

 but the pectinations on the outside are longer than those on the inside 

 more especially towards the base, where they are twice as long; see 

 fig. 10 representing the outside pectinations, and fig. 11 representing 

 those on the inside. The ventral surface is, for the most part, reddish, 

 but black at the end near the valve of the penis ; the claws are rufous 

 the pad between them being black. The wings are transparent and 

 iridescent, the costa and stigma pale brown, the post-costal and 

 esterno-medial nervures dark brown, the other nervures grayish. 



The female, represented at fig. 9, is longer and broader, expanding 



