Arg., Pl. XV., Fig. 4) in the characteristic attitude of alarm, with the front segments retracted, and the ocelli on the fourth segment prominently exposed. The subdorsal line is present in this species. Burmeister also figures two of the early stages (Pl. XV., Fig. 7, A and B), and describes the complete development of _Philampelus Labruscæ_, another species belonging to the subfamily _Chærocampinæ_. The earliest stage (3-4 days old) is simple green, with no trace of any marking except a black spot on each side of the fourth segment, the position of the future ocelli. A curved horn is present both in this stage and the following one, during which the caterpillar is still green, but now has seven oblique red lateral stripes. The caudal horn is shed at the second moult, after which the colour becomes darker, the adult larva (figured by Madame Mérian, in her work on Surinam, pl. 34 and Sepp., pl. 32) being mottled brown. In addition to the ocellus on the fourth segment, there is another slightly larger on the eleventh segment, so that this species may perhaps be another transition to the third group; but our knowledge is still too imperfect to attempt to generalize with safety. R.M.] [83] Cat. Lep. Ins. East Ind. Comp., Pl. XIII. [Figured also by Butler (=_Chæerocampa Silhetensis_, Walker), _loc. cit._ Pl. XCII., Fig. 8. R.M.] [84] Cat. Lep. Ins. East Ind. Comp., Pl. XIII. [Figured also by Butler, _loc. cit._ Pl. XCI., Fig. 1. R.M.] [85] Horsfield and Moore, _loc. cit._ Pl. X. [86] _Ibid._ [=_Pergesa Acteus_, Walker. R.M.] [87] [Figured also by Burmeister, _loc. cit._ Pl. XV., Fig. 3. R.M.] [88] Horsfield and Moore, _loc. cit._, Pl. XI. [89] To be accurate this should be designated the infra-spiracular line; but this term cannot be well applied except in cases where there is also a supra-spiracular line, as, for instance, in _Anceryx (Hyloicus) Pinastri_. [90] Upon this fact obviously depends the statement of that extremely accurate observer Rösel, that the caterpillar of _Euphorbiæ_ is but very slightly variable (“Insektenbelustigungen,” Bd. iii. p. 36). I formerly held the same opinion, till I convinced myself that this species is very constant in some localities, but very variable in others. It appears that local influences make the caterpillar variable. [91] The green is considerably too light in Fig. 45. [92] “Die Pflanzen und Raupen Deutschlands.” Berlin, 1860, p. 83. [93] Fig. 62, Pl. VII., is copied from Boisduval. [94] The fading of the red anteriorly has not been represented in the figure. [95] [The caterpillar of _Deilephila Euphorbiarum_, figured by Burmeister (Lép. Rép. Arg., Pl. XVI, Fig. 1) belongs to this stage. R.M.]