398 Dr. T. A. Chapman on the 



hairs of the slope. The more conspicuous hairs are four or 

 five black ones on the dorsal flanges, i. c. on each side of the 

 middle line ; some hairs on the lateral flange, pale brownish 

 in colour, are also more conspicuous. 



The larva itself is a dirty green (not so bright and lively as the 

 well-fed specimen), with an interrupted darker dorsal line, and a 

 dark line across at each incision (shadow ?). The spiracles are darker 

 points ; there is a very marked lateral flange, but no diff'erence in 

 colouring, nor are there any obli(][ue lines, but the cushioned hollows 

 of the slope look slightly darker. 



I note on — 



October 13. — The majority have gone into hibernation, 

 some in third instar and some in fourth. Some of the 

 third instar have only been laid up during the last few days, 

 but for the most part they became lethargic two or three 

 weeks ago. The fourth instars, on the contrary, have only 

 recently become quiescent, except one or two earlier 

 individuals. There remain one or two of each instar, 

 perhaps feeding, not at any rate laid up. There are also 

 a full-grown larva still feeding, however, 13 mm. when 

 sulking, 15-16 when active, 4'5 mm. broad and 3'5 high 

 (sulking). The segments full and rounded, back flattened 

 but no distinct dorsal flanges, the lateral flange marked, 

 and thrown into greater prominence, by the brilliant line 

 of yellow in* it some way below the surface and, therefore, 

 more or less indistinct, except on direct lateral view. 

 There is a dark dorsal line or band ; seen at some angles, 

 it has a paler margin. On the slopes are two parallel 

 pale oblique lines on each segment (2nd thor. to 6th and, 

 partially, 7th abl.), sloping downwards and backwards. 



The hairs and their bases are hardly visible without a 

 lens. The hairs are very fine and small, longest on dorsal 

 and lateral flanges, ruddy, almost brown, a less long and 

 paler set on middle of slope, the rest very small. 



Along the dorsum the hair bases are nearly all black, 

 below this the pale glassy form is abundant. 



The glassy bases seem less abundant as the larva gets 

 older. I cannot say whether some of them change and 

 become dark ; I suspect not, and that the appearance is 

 perhaps due to exaininiug specimens in difl'erent lights. 



There is a second specimen in last akin, not quite so 

 large (13 mm.) and duller in colour, possibly has done 

 feedinor. 



