THECLA QUEROUS. 187 



segments 5 and 6 ; the segments are strongly divided, 

 each sloping forward so that the back edge of the next 

 rises like a notch, except between 2 and 3, for 3 rises 

 higher than 2 at its front edge; 11 and 12 are also 

 less distinctly divided. Below the spiracles each seg- 

 ment is produced into a flattened ridge, thus causing 

 the great proportional width ; the belly is flat ; a 

 transverse section of the larva would be almost trian- 

 gular; all the legs are short and well under the body, 

 the motion is even, almost gliding ; the general colouring 

 is brown ; the centre of the back is fawn colour, with 

 a dark-brown dorsal line bordered with yellowish, which 

 looks like a groove ; the second segment is edged with 

 yellowish, and has a central brown spot in front with 

 a greyish patch ; the third has a semicircular brown 

 patch with its curve behind ; the fourth has a similar 

 patch, but smaller ; on each of segments 3 to 10 there 

 is in the subdorsal region a pale streak slanting down- 

 wards and backwards edged below with very dark 

 brown, growing wider and more intense backwards ; 

 these streaks map off the centre of the back ; below 

 them the side is darker than the back, the edge of the 

 ridge is yellowish ; some way above the ridge are the 

 round, small, dark brown spiracles, placed in a hollow. 

 On segments 11 and 12 the centre of the back is brown, 

 the sides yellowish, the hinder part of 12 chestnut ; 

 13 has a small squarish chestnut patch at the tip, 

 bordered with yellowish-white ; the colour under the 

 ridge is reddish-brown, just above the legs is a pale 

 line ; centre of the belly blackish ; true legs black and 

 shining, with a fringe of bristles along them on the 

 outside, the prolegs soft pale brownish-ochreous. 



For pupation the larva spins a few threads, making 

 a frail sort of cocoon just on the surface of the earth, 

 or availing itself of the shelter of a fallen leaf ; the 

 pupa is stout and rounded in outline, about 9 mm. 

 long and rather more than 4 mm. at its widest, the 

 back rounded, the belly more flattened, the abdomen 

 not extending more than 3 mm. beyond the wing-cases, 



