358 LEPIDOP TERA . 



distinctness were aroused by the circumstance that it was 

 reared always among typical C. pusaria, from larvae not 

 separable from those of that species. Finally Mr. E. A. 

 Atmore, having collected a very large number of larvaa from 

 alder and birch in the neighbourhood of King's Lynn, reared 

 from them, among abundance of typical C. pusaria, some 

 with reduced numbers of transverse lines, several of the form 

 rotundaria, others intermediate between them, and one 

 example not symmetrical, the wings of one side being of the 

 typical pusaria, on the other of a variety approaching to 

 rotundaria. 



On the wing in May and June, and as a second brood in 

 August. 



Larva slender, cylindrical, slightly enlarged behind ; head 

 rounded, rather sloped, and flattened in front, reddish- 

 chocolate; face green; body reddish -chocolate with a purple 

 tinge on the sides ; a series of pairs of whitish dorsal spots, 

 two on each segment ; an interrupted pale ventral stripe, but 

 the undersurface from the second to the fourth segments pale 

 green, between the prolegs pale bluish-green ; the whitish 

 dorsal spots are lengthened into white dashes on the middle 

 segments. (C. Fenn.) 



July, and again in September, on birch, alder, oak. sallow, 

 hazel, and other trees, feeding at night upon the leaves. 



PurA stout, rather ovate, having a full curve from the head 

 over the dorsal region to the tail ; head and eye-covers rather 

 prominent; antenna-cases ridged and delicately sculptured 

 with cross lines ; wing and limb-covers unusually smooth, 

 olive-green ; anterior portion of the dorsal region greenish or 

 olive-brown ; dorsal segments glossy chestnut-brown ; abdo- 

 minal segments similar, but deepening in colour to the anal, 

 and with the divisions rather darker ; tip of the anal segment 

 somewhat swollen, dark brown ; cremaster a mere tubercle of 

 the same colour, armed with a pair of closely appressed 

 terminal spikes or bristles. In a cocoon of silk and earth 



