CELERIO GALLII. 183 



with black ; stigmata light orange, bordered with black (Chaumette, 

 Zoo/., ix., p. 3160). Newman describes the larva (Ent., v., p. 192), 

 and Robinson gives some details of the larva in three instars (E.M.M., 

 vii., p. 187). 



Variation of larva. — We have already detailed (anted, pp. 180- 

 181) Bacot's description of three different forms of the larva in the 3rd 

 instar, the individuals not being so unlike each other in the 1st 

 and 2nd, nor again in the 4th and 5th, instars. Many authors have 

 dealt with the variation, and Buckler gives (Larvae, &c, ii., pi. 

 xxiv., figs. 1 — ig) some excellent figures of different forms thereof 

 in his possession. He describes (loc. cit., pp. 37-40) an example (one 

 of six*), sent to him in September, 1870, and which he regards as the 

 type, as follows : " This larva, on its arrival, was about three-quarters 

 of an inch in length (in 3rd instar), of a rather bright, full, opaque 

 green, the belly and legs a little paler than the back and sides, 

 with dorsal, subdorsal and subspiracular stripes of pale ochreous- 

 yellow. Upon the subdorsal stripe, on the front of each segment, 

 appeared an indication of an oval spot of a little deeper yellow, 

 with the faintest possible outline above of black ; the horn at this 

 time, but slightly curved, semitransparent, and of a reddish tint, 

 tipped with crimson ; the hinder wrinkled portions of the segments 

 dimly showing some whitish-green freckles. On moulting (into 4th 

 instar) it changed into a deeper, brighter, and purer opaque green 

 dress, in which the previous design was now deeper than that of the 

 side, and the belly and legs a little paler still. On the subdorsal stripe, 

 at the beginning of each segment, the oval spots were enlarged and 

 tinged with bright orange, edged above and below with black; 

 the end of the stripe, towards the horn, bore something of an elongate 

 pear-shaped spot. A freckling of pale yellow specks distinctly 

 appeared on the hinder portions of each segment, as well as on 

 the sides ; the spiracles white, outlined with black ; the head pale 

 bluish-green, marked with black near the mouth ; a pale bluish- 

 green plate on the second segment ; hinder extremities pale green, 

 slightly tinged with pink ; the horn pinkish-ochreous, tipped with 

 deep crimson. When a length of an inch and a quarter or there- 

 abouts is attained the final moult (into 5th instar) takes place, and a 

 great change is at once apparent; the stripes have now totally disap- 

 peared, and the head, the plate on the second segment, and the anal flap 

 and prolegs, show purplish-red. In the individual whose changes I 

 have been tracing, the ground-colour at first was opaque-black, 

 relieved only by the pale yellow subdorsal spots, a few small 

 freckles and the spiracles ; but investigation with a lens disclosed 

 an infinity of little puckers and wrinkles, reminding one of the 

 texture of crape. By degrees these wrinkles were smoothed out 



* Buckler must have obtained more specimens afterwards for it is recorded 

 [Trans. Ent. Soc. London) that McLachlan exhibited at the meeting of the Ent. Soc. 

 of London, held on November ;th, 1870, no fewer than 16 different forms of the larva 

 figured by Buckler, and all found in 1870. Tugwell writes: "The larvae vary 

 immensely in colour and marking, and not only include the eight forms figured 

 in Buckler's Larvae, Sec, ii., pi. xxiv., but also several others. In some, the usual 

 pale yellow or creamy-white subdorsal spots were replaced by a bright rose-pink 

 colour. Three larvae were entirely black, without any markings ; and two, half grown 

 larvae, had the subdorsal markings much freckled with violet, making them extremely 

 handsome." 



