188 BRITISH BUTTERFLIES. 



none above spiracle, and one behind it only on one side ; the infra- 

 marginal one as in anterior segments. The 5th abdominal has one medio- 

 dorsal lenticle, no supraspiracular, and one behind only one spiracle, but 

 the opposite one to that possessing it on the 4th. The 6th, like the 

 5th, except that, of the dorsal group of hairs, the 2 posterior ones are 

 very large and long. (On the 4th and 5th one dorsal hair was long.) All 

 these long ones about 05mm., the mass of hairs about 02mm., but 

 with all sizes, from 04mm. to O'lmm., or even shorter. On the 

 7th abdominal segment are two mediodorsal lenticles, and two long 

 hairs on each side, placed trapezoidally, but much too near spiracles 

 (which certainly are more dorsal here, and more so on 8th, as in Lycasnids 

 as a rule) to be i and ii ; below these, and behind spiracle, are two 

 lenticles. Two very long hairs in marginal set. The 8th abdominal has 

 only three or four short dorsal hairs, and four mediodorsal lenticles ; the 

 9th has five or six short dorsal hairs, a lenticle below these. There are 

 two very long marginal hairs, probably belonging one each to the 8th 

 and 9th abdominals, with others nearly as long, and as many shorter, 

 that belong to the 8th, 9th, and 10th abdominal segments, which may 

 be distinguished dorsally, but not along the margin. The skin-surface 

 is beautifully tessellated in minute hexagons. Each pad of prolegs 

 carries five or six hooks of slightly varied length, but not distinctly in 

 a longer and shorter series. The bases of the hairs spread out basally, 

 and are divided into five or six rounded lobes, giving them a very 

 petaloid (and flower-like) character. The hairs are all dark and finely 

 spiculated. It is to be noticed that some lenticles are mediodorsal 

 (azygos), and that they already are markedly inclined to differ on 

 the two sides, apparently, from a certain theoretical number ; some are 

 wanting, and not symmetrically, a beginning of their very irregular dis- 

 tribution in the older larvae. Third instar (antea, p. 163, line 2): Head 

 black, 1mm. across. The prothoracic plate a broad transverse oval, about 

 0-6mm. across, with a central forward tongue acutely pointed, and a broad, 

 square, posterior wing, divided into two by a suture-like mark, that 

 does not proceed forward into the central portion, with three hairs on 

 each side, and three or four lenticles not quite symmetrically placed ; 

 the rest of the segment carries many hairs of the same pattern as 

 elsewhere, 0-lmm. to 03mm. long, spiculated, and with petaloid 

 bases — a sparser group round the end of the plate, a large group 

 along the front, another in front of the spiracle, and another towards 

 leg, not well separated from each other, except that the intervals have 

 rather shorter and sparser hairs ; there are a few scattered lenticles ; 

 the spiracle large, somewhat raised ; the skin-surface in fine tessellated 

 network. The mesothorax is much the same but without the plate, 

 several of the dorsal hairs are 04mm. long. The metathorax and 1st 

 abdominal are narrow segments, and none of the following, though wide, 

 are quite as wide as the first two (pro- and mesothorax). These two 

 segments, and the 2nd abdominal, are notable as having on each side 

 one dorsal hair about 0"5mm. long ; on the 2nd abdominal is a second 

 moderate hair, but on the metathorax and 1st abdominal the next longest 

 are about half the length, and grouped more densely round the long 

 ones ; otherwise the hairs are equally distributed, about 85 on either 

 side, above spiracular level ; there are also four or five long hairs in 

 the lateral flange region, the longest nearly 0'6mm., ranging down to 

 hairs of about 0*1 5mm ; there are lenticles, three or four dorsally, 



