296 Dr. T. A. Chapman's Contributioti to 



broad, and quite 5 mm. deep. Many of the hair bases are black, 

 but the long hairs are conspicuously white, on lateral view, the 

 dorsal prominence of each segment has a crest of these silvery hairs. 

 The prothoracic plate is well marked out and shows conspicuously 

 black hair-bases. The fan-positions are white spots, the honey-gland 

 looks like a small smooth area surrounded by a close line of hairs 

 or lenticles, on a darker ground the dorsal view shows a fringe of 

 silvery hairs laterally similar to the dorsal crest. There is a third 

 range of such hairs half-way between hxteral line and prologs. 



Jan. 12. Seems to be looking for a place for pupation. No. 2 

 still laid up for last moult. 



Jan. 14. No. 1 has settled (?) in a corner of box. 



No. 2 moulted last night into 5th instar, prothoracic plate dark 

 from hair-bases, hairs very bright and silvery. 



Dec. 30, 1913. Brought 14 3rd instar larvae from refrigerator 

 into warm room (54°-56° night, 66°-68° day temj^erature, sometimes 

 near 70°). 



Dec. 31. Two larvae have already made marks on the leaves 

 provided, one having an area of quite two square mm. 



Jan. 1, 1914. About 7 or 8 appear to be feeding. 



Jan. 7. One larva has moulted into 4th instar. 



Jan. 12. There are now 12 of these larvae, nearly all in 4th instar. 



Jan. 13. Several of these larvae show a distinct yellow line down 

 each dorsal flange. 



Jan. 6. Brought up 3rd instar thersites and two 4th instar. 



Jan. 7. One (at least) of 3rd uastar is feeding. 



Jan. 12. All above grown, and most now laid up for moult. 



Jan. 14. One of 4th instar moulted to 5th, hairs very silvery 

 and white. 



4th instar. Description from a larva reaching this stage after 

 hibernation. Length 7 mm., width 3 mm., height 2-5 mm. Is 

 very like full-grown, last-skin larva in dark green colour, more or 

 less obscure yellow lines; when laid up for moult shows the same 

 flattened plateau ranging over segments to Gth abl. on slopes, 

 level and polished, and with the hollows within on each segment. 

 It differs from the last skin in the hairs, including a good many 

 dark ones especially on dorsal ridges, and in the black hair-bases 

 being more conspicuous. 



Last instar, half grown. 



Length 125 to 130 mm., width 4 mm., height 3'8 mm. Colour 

 bluish green, with indications of yellow dorsal and lateral (very narrow) 

 sunk lines, a faint indication on each segment of 3 pale lines obliquely 

 downwards and backwards. Hairs white, except on thorax. 



