258 THE ento:\ioi,ogist's recorh. 



almost hoi'izontal line. On May 2r)th, 1901, I note: The larvji:^ are 

 mostly raoulting. One or two have already changed and are in 3rd 

 skin. 



Larva in Hrd stadium. — Noticeable changes are the further 

 development of the bases of the horns and dorsal tubercles i. The 

 horns themselves would appear to be atrophying, the branches being 

 :-;mall and insignificant, and the forks at top have disappeared, but the 

 tij) is stJll composed of two minute prongs, each bearing a single hair. 

 The anal horn is now very short and the small dorsal horns, representing 

 tubercles i on the segments that do not bear the large horns, are also de- 

 generating. Lateral flange much stronger and stands out more sharply 

 (coloured yellow) than l)efore. The head is clear green, not shining, but 

 with a dull surface, taller, and more clearly trapezoidal than before. 

 The last joint of antenna long. The prothorax overhangs head more 

 than ever ; at rest the crown of head is anterior to mouth, the slope 

 being about A'y ; ii is the most obscure of the tubercles, iii, iv and v 

 are still clearly visible, chiefly on account of their raised bases. There 

 is a dark slash of red on 1st abdominal segment, just above the lateral 

 flange and behind the spiracle. The legs are green with pink tips, the 

 prolegs large and Sphingid-looking, of a pale greenish colour. The 

 spiracles long and narrow, and of a pale pink colour. The oblique 

 stripes clear, but not strong or bordered as yet. The shagreen hairs 

 are scattered over skin surface, they are raised on tall cone-shaped 

 yellow bases, and the hairs rising from them, if they may still be so 

 called, are short stumpy cylinders, rather larger at top than base. 

 Hairs on tubercle vi and the basal hairs show up plainly by reason of 

 their large size, as also do those on the other primary tubercles. 



Larva in 4th stadium (June 10th, 1900). — The larva:* will, on 

 occasion, crawl Imckwards for a short distance. They have lost all 

 trace of horns. Head as before, but rather a tall trapezoid, with well- 

 marked lobes and notch at crown ; mouth-parts pink, antennsip long, 

 also two fleshy appendages rather prominent ('? palpi) in front of 

 mandibles, palpi and ocelli brown, 6 ocelli present, one very ventral. 

 Numerous scattered fine short white hairs on head. The body slopes 

 up from head to metathoracic segment, and tapers rapidly and suddenly 

 from 8th abdominal to anus ; it is of about even thickness from meta- 

 thorax to 8th abdominal. It is now a square-cut, angular-looking 

 larva with the dorsal area of segments raised into square, sharply-angled 

 humps ; when at rest, however, the intersegiuental areas are so com- 

 pressed, and the humps flt so closely together, that the impression is 

 given of very tall short segments. The metathoracic and 1st abdominal 

 segments show a marked tendency for the humps to coalesce and form a 

 single one, the cleft at intersegmental area being not at all apparent. 

 The larva is bright apple-green, studded with numerous yellow shagreen 

 tubercles. The lateral ridge is very sharp and distinct, coloured bright 

 yellow. This yellow line along lateral flange is continued round edges 

 of anal flap and turns up in front of prothoracic spiracles along the 

 anterior ridge of prothorax. The ventral area below the lateral ridge 

 changes after moult to a dull sage- or glaucous-green. Feet on prolegs 

 are j_-shaped, pale-coloured, the rows of dark brown hooks on them 

 showing up distinctly. The true legs are greenish tipped with pink. 

 The spiracles pale red. The red or pinkish warning spot, developed 

 from the dark red slaiab on 1st abdominal segment and referred to in 



