APAMEA UNANIMIS. 91 



more whity-brown ; the length was now 13 mm., and 

 of much stouter proportions. 



By the 3rd of September, after moulting, they 

 measured from 20 to 22 mm., and were quite brown 

 and sober in their colouring — the anal plate still the 

 darkest, and were all full-grown unanimis. By the 

 9th of October they ceased feeding, though the grass 

 was supplied till end of the month. 



On the 12th of February, 1883, they were found to 

 be all dead and shrivelled up amongst dried leaves of 

 the Phalaris kept out of doors. 



The larvae on the striped grass from Blubberhouse, 

 Yorkshire, arrived on the 8th of September, and were 

 all rather less than half an inch in length, with black 

 heads and plates and greyish-greenish bodies, marked 

 with stripes quite similar to the usual unanimis. 

 They fed well, and retained the black heads up to the 

 penultimate moult, and also the anal plate quite black, 

 and these did not change colour till after the last 

 moult, when they became pale brown. Their growth 

 was rapid, and they were full grown by the 18th of 

 October, but fed on until the 23rd, though more 

 sparingly. The full length was now 1 inch 1 line ; the 

 head and the plates lightish brown and shining, the jaws 

 dark brown, papillae pale cream-colour, as was also the 

 dorsal stripe, the subdorsal not quite so pale, the 

 ground between them and the spiracular stripe of a 

 delicate brownish-greenish tint, and with fine grey- 

 brown dots near and close to the edges ; the spiracular 

 stripe broad and pale cream-colour, spiracles in the 

 middle were whitish finely edged with blackish ; belly 

 and legs rather deeper tinted with greyish-buff; the 

 skin shining a little, but covered all over with fine 

 wrinkles except on the plates ; the ventral and anal 

 prolegs longisb, and well furnished with fine hooks, 

 that cling well to the grass. On each side of the 

 dorsal line towards the end of each segment a few 

 dark grey-brown freckles were aggregated together, 

 and a dark edge finely outlined the dorsal line. On the 



