EGG AND FIRST-STAGE LARVA OF PAPILIO HOMERUS. 99 



some segments meeting in front of them. There is a rather 

 paler stripe just below these (subdorsal) containing one dark 

 mark. Laterally the dark area from subdorsal to low sub- 

 spiracular is partially broken by light markings into three 

 parallel stripes, and these a little broken on each segment. 



The brown head has four ocelli in a curve, with convexity 

 forwards, and one (making five) about the centre of the curve 

 behind. The base of antenna is pale, as well as the soft portions 

 of the mouth-parts. There is a paler area at the vertex laterally. 

 The first antennal joint is an extremely narrow line of brown 

 chitin, easily overlooked. The second is conical, flat at each 

 end, nearly half as long again as broad at the base, more than 

 twice that of apex. It carries on front side a short thick hair, 

 and close to or on the end what must be called a hair, but is a 

 broad thick process, little longer than broad ; at end is a third 

 joint, a short process as broad as long, with several hairs or 

 sensitive papillae at end ; also on second joint, and beside this, 

 are two conical (jointed at base) papillae, and one minute hair. 

 The labrum is 0"5 mm. wide, deeply notched so as to be 0'22 mm. 

 long (antero-posteriorly) at ends, 0*17 in the middle. It carries 

 outside five bristles (on each side), longest nearly 0"1 mm. long ; 

 inside it has on each side one long median hair and a row of six 

 very thick bristles (0*05 mm. long) round the margin of the 

 lateral rounded flap. The inner surface and membrane behind 

 is clothed with abundant, minute, sharp, hair-like skin-points, 

 their apices directed backwards, i. e. away from the margin. 



The jaws are of rather square outline, about 0*35 mm., with 

 three large rounded teeth, three or four minute internal and six 

 nearly as small external to them. All these teeth have finely 

 crenated margins. On the external margin is a short but rather 

 sharp tooth. The maxilla has a general resemblance to a larval 

 leg. The first joint narrow externally, broader internally, with 

 one long and one short bristle. Basal to this first joint is a plate 

 with two or three hairs. The second joint is broad externally, 

 narrowing (at least its chitinous covering) to a point internally, 

 with a long bristle here. Beside the terminal joint is a rounded 

 chitinous boss carrying three strong bristles and two small mam- 

 millae, each with a terminal mammillula. The third joint is a 

 little smaller than, of much the same shape and proportions as, 

 the second antennal joint. It carries, again, a fourth joint (but 

 no hairs), of about half its own length, and this has at end 

 several mammillae, one at least with a mammillula. The visible 

 portion of the labium is triangular (nearly equilateral), with 

 sides 0"2 mm. long ; two-thirds of this (in length) seems to be 

 in one piece. The apical third is formed of two side and one 

 central piece. Each side-piece has a palp, the first joint about 

 0*05 mm. long and a quarter of this width ; at end of this there 

 is a long (0*02) conical sharp-ended piece, apparently jointed 



i2 



