2 HYPENA ROSTRALIS. 



the head has the lobes rounded, is the same width as 

 the second, but narrower than the third segment. 

 Body cylindrical, widest in the middle, attenuated 

 very gradually to the anal extremity. There are only 

 four pairs of posterior legs, on the 8th, 9th, 10th, and 

 13th segments respectively, so that the larva, when 

 walking, arches the 5th, 6th, and 7th segments ; skin 

 soft and smooth ; tubercles slightly raised, and from 

 each of them springs a single short and inconspicuous 

 hair. 



Ground colour bright grass-green, exactly of the 

 same colour, indeed, as the underside of the hop 

 leaves on which it feeds ; the head tinged with 

 yellow. A darker green pulsating vessel showing 

 clearly through the skin forms the dorsal line ; sub- 

 dorsal lines clear white ; spiracular lines also white, 

 but much interrupted and less distinct ; tubercles and 

 spiracles black, and the head is also numerously dotted 

 with black; segmental divisions yellow, but scarcely 

 noticeable, the hairs grey. 



Ventral surface, legs, and prolegs uniformly of the 

 same bright green of the ground of the dorsal area. 



Feeds on hop, and when young (Mr. Jeffrey says) 

 is very inconspicuous if at rest in its usual position 

 along the midrib of the hop leaf, the colour of the 

 leaf and larva so closely resembling each other. 



Next day, on the 26th, the larva described became 

 paler in colour and began to spin its cocoon, which 

 on the following day was evidently nearly completed ; 

 during the spinning a pretty pink colour spread over 

 the dorsal area of the larva. 



The cocoon is of white silk, but so slender that the 

 pupa can be distinctly seen through it. 



The pupa is about five-eighths of an inch long, and 

 very much of the ordinary Noctua shape ; it is smooth 

 and polished, the ribbed antenna-cases prominent and 

 reaching to quite the bottom of the wing-sheaths ; 

 colour rich mahogany-brown. 



When full-fed both larvae seemed exactly alike, and 



