280 BRITISH BUTTERFLIES. 



are. It carries hairs much as the surrounding skin does, both 

 as to their number, size, and irregular distribution. It is, how- 

 ever, of a somewhat corneous texture and wrinkled on a larger 

 pattern than those of the head. Beneath the plate is the anal comb, 

 about 0'6mm. wide, and the same in length; the central spines are 

 about that length to the number of some 13 ; these appear to be laterally 

 flattened, and with five or six terminal crenulations, the extremities of 

 divisions into which it tends to split. At either side the long central 

 spines decline gradually into smaller ones, and the base of the comb 

 becomes narrower, the last spine, sharply pointed, is not so very 

 different from some rather large skin-spicules that are adjacent. The 

 total spines are 21 in one specimen, 27 in another. At the extreme 

 anterior margin of the prothorax, medioventrally, is a minute " chin- 

 gland" (Chapman). Final instar (July 31st, 1868) : 18mm. in length, 

 with the back a little arched, and the belly rather flattened, being just 

 of the same form as when younger; the body is very plump, and thickest 

 in the middle segments ; the segmental folds distinct, each segment sub- 

 divided into five subsegments, the brOadest one in front ; the head is 

 somewhat heart-shaped and flattened on the face; the colour of the body 

 is of a rather more yellowish-green than before, the minute, raised, points 

 blackish, the dorsal line a darker green, and the paler subdorsal stripe 

 delicately edged above and below with a fine faintly darker line ; the 

 anterior pair of tubercular dots just perceptible on each segment, but 

 only with a strong lens ; the spiracular region forms a slight ridge of 

 paler whitish-green, the spiracles very small and red in colour; the 

 head is purplish-brown as before, but with the addition of an ochreous 

 streak from the crown down the front of each lobe, united below by 

 another broad transverse streak at some distance above the mouth, and 

 also a spot of the same colour on each cheek (Buckler). 



Foodplants. — Lotus corniculatus (Buckler), L. uliginosus (Sich), 

 lberis pinnata (Donzel), Teesdalia niiclicaulis (teste Lambillion), 

 Eryngium campestris (Schiffermuller), Coronilla varia (Koch). 



Puparium. — Unless disturbed in some way, the larva pupates in 

 spring in the cocoon it has made for the purpose of hybernation. In 

 one instance there was a branched V-shaped cable drawn across the 

 thoracic region, as if intended for a girth, and the cremaster holds to 

 silk that may have been recently spun ; but, with these exceptions, 

 there was no proof that any additions were made to the hybernaculum 

 before pupation. On March 8th, 1906, some larvse that have been in 

 a warm room for a considerable time are still larvae, but three are found 

 to have pupated (Chapman, March 8th, 1906). The remainder of 

 these pupated soon after. One larva, however, which was sent last 

 autumn from Hyeres, was kept on a mantelshelf all the winter (at 

 Reigate), at a temperature of 70°F. and over on most days, and, its 

 hybernaculum being transparent, it was often seen to move within it. 

 English larvre kept cool all the winter till the end of February, and 

 then brought into a warm room, all pupated, as noted above, by about 

 March 15th ; whilst this southern one (carried south to Hyeres again in 

 in id-March) only pupated on April 10th. About March 30th it opened one 

 end of its winter cocoon, as a provision for the emergence of the imago, 

 but did not come out. The head of the pupa faces this opening, and 

 there is, inside the cocoon, a girth; really, this consists of two strands 

 drawn across the cocoon, one on each side of the pupa, and attached to 



