154 BRITISH LEPIDOPTERA. 



of which are pale pink ; subdorsal line yellow ; spiracles yellow, 

 with a pink blotch behind and below them ; the belly, claspers, and 

 prolegs whitish-yellow, the lower extremities of the prolegs black ; 

 a large black oval spot on the front part of all the claspers ; the 

 upper part of the anal claspers and flap are of the same colour as 

 the head ; the caudal horn straight and very rough, red, tipped with 

 black (Bignell, Ent., v., p. 169). (5) The head and body soot-black; in 

 one a dorsal line of reddish-brown, in another no dorsal line at all ; 

 the subdorsal line yellow, uninterrupted ; slightly below these and 

 between each segment a dull reddish blotch ; the belly and "claspers 

 ochreous, speckled with black. Three other larvae differed from those 

 described above in that the subdorsal lines were indicated by yellow 

 ocelli (Farn, loc. cit, p. 180). (6) Length about 3*25ins. ; head black ; 

 caudal horn red and pink ; a black line runs the entire length of the 

 back, about fV n - * n width, with transverse bars on each segment, 

 extending about T 3 e-m-> and near the same in breadth, at the end 

 of which is a cluster of minute white dots in the form of a crescent; 

 a narrow black line divides each segment ; on the sides are a great 

 number of minute yellowish dots dispersed in rows ; on the 

 lower side, just above the legs, runs a distinct line of small dots 

 with a series of small crescents below ; the sides have a yellowish- 

 green appearance; the belly is rusty black (Hobbs, loc. cit., p. 214). 

 (7) Smooth, elongated anteriorly; ground-colour apple-green, more or 

 less speckled with yellowish ; an olive-coloured dorsal line dilated 

 into a triangle on the 1st segment ; the lower half of the body, 

 and all the abdomen, of an uniform yellow-olive colour ; a series 

 of large oval patches of shining light yellow on either side of the 

 dorsal line, two on each segment, of which those of the middle 

 segments are the largest, brightest and roundest ; each of these 

 patches is encircled with black ; a brownish interrupted lateral line 

 on which are placed the stigmata ; abdomen yellowish-olive, with 

 a darker ventral line ; all the prolegs are of the same colour as 

 the abdomen, the thoracic legs tipped with shining brown ; head 

 greenish-olive, with a triangular brownish patch over the mandibles ; 

 the mandibles and lower part of the head black ; caudal horn of 

 a yellowish-green colour, granulated and tipped with black; a pale 

 lateral line between the dorsal and lower line (Chaumette, Zool., ix., 

 p. 3160). 



Variation of larva. — We have already quoted the descriptions 

 of several different forms of the adult larva of this species (supra), as well 

 as that of Fuessly's quite unusual variety. That described by Marshall 

 appears to be the palest, whilst intermediate between it and Hellins' 

 Exeter larva is that described by Bignell. On the other hand, that 

 described by Gatcombe was much darker, and must have come 

 near to Fuessly's figure referred to above and used by 

 Stainton in his description in the Manual. Bartel observes 

 (Pal. Gross-Schmett., ii., pp. 98-99) that the larva is, when full 

 grown, 8omm.-9omm. in length, and agrees in size and form with 

 those of Celerio gal Hi and Hyles .euphorbia? , and that there are two 

 different forms : \i) Light green, thickly dusted with yellow; on each 

 segment a quadrate black spot, and, beside it, a rose-red one 

 margined below with white ; below these spots runs a yellow lateral line ; 

 above the legs appears on each segment a round red spot. Belly and 



