lO IHE ENtOMOLOGISx's UECORt). 



tudinally ribbed eggs, a form which, I believe. Dr. Chapman has 

 associated with A. imitaria, and that I have associated (T'wji. Rec.,\\\\., 

 p. 188) with A. marfiinepunctata. 



Egg. — My description of the eggs, made under a two-thirds lens 

 used as a hand-glass, laid by a female taken near Aix-les-Bains, 

 on July 26th, is as follows: — Variable in shape. Some cylindrical, 

 others wider at the micropylar end than at its nadir. Length : 

 breadth : : 5 : 3. The newly-laid e^g is pale green in colour ; the 

 shell shiny and glassy-looking, very distinctly ribbed longitudinally 

 with about 16 ribs, and with about 20 fine transverse ribs crossing 

 the longitudinal ones. The micropylar area is very strongly marked, 

 most of the longitudinal ribs uniting on the edge of the minute 

 central depression, at the base of which the micropyle is placed. 

 (Described July 27th, 1897.) After two days the eggs become pale 

 reddish to the naked eye, but are pale straw colour, blotched with 

 crimson, under the inicroscope. The ribs are now very distinct, eight 

 being the usual number on the upper half, whilst a rather deep and 

 oval depression is noticeable on the upper surface. The eggs are 

 usually laid singly, and on the long side, but some few are laid quite 

 on end. (Further note, July 29th, 1897.) 



General description and resting habit of larva. — Having sent on 

 some of the eggs to friends, Mr. H. J. Turner handed me over a few 

 larvae, about the middle of September. One was then about three- 

 quarters of an inch long, and I felt certain would feed up this autumn. 

 It lived until well into October, and then died, whilst the smaller ones, 

 about half an inch long, were laid up for hybernation. A description 

 of the larva, made on Sept. 17th, 1897, is as follows : — The larva is 

 long and slender, scarcely any thicker posteriorly than anteriorly, and 

 yet a suspicion of gradual increase from the meso-thorax to the 8th 

 abdominal segment. The smaller individuals rested with the dorsum 

 forming a curve or bow (not rolled up), but the larger individual stood out 

 rigidly, its body making an angle of about GO'^, with the stem on which 

 it rested. The larva does not drop when disturbed, but quickly throws 

 its head and body to one side, and then stands immovable as before. In 

 colour, the larva is greyish-brown to the naked eye, and has a longitudinal 

 series of small black dorsal markings placed in the incisions between 

 the abdominal segments. There is a fine longitudinal medio-dorsal 

 line, on either side of which is a dark grey line, then a brownish line 

 followed by a black supra- spiracular line. BeloAV the spiracles, a 

 tumid white sub-spiracular line is conspicuous. The ventral area is 

 very pale (whitish), without markings. The true legs are placed very 

 close together, white, with pale brown hooks, and scattered tubercu- 

 late hairs. The prolegs are also whitish, shaded outside with brown, 

 also with a few tuberculate hairs, the marginal, at the base of each 

 proleg, being conspicuous ; the hooks are crimson in colour. The 

 marginal series of tubercles are to be found as a longitudinal series on 

 all the segments ; those that have no prolegs also carry these tubercles. 

 Under the microscope the grey-brown ground colour becomes clear 

 white on the thoracic segments, and creamy on the abdominal, the 

 skin being minutely pitted, and the dark (blackish) supra- spiracular 

 line has the appearance of dried black ink. The tumid sub-spiracular 

 line is snowy white, much broken up by the segmental incisions, 

 and thrown into striking convolutions on the thoracic segments. 



