136 THE ENTOMOLOGIST. 



but in these latter it is interrupted and incontinuous ; the 

 black forms a broad continuous stripe down the ventral 

 surface, including the cases of the head, legs, antennae, &c. ; 

 the wing-cases are yellow, bordered and spotted with black ; 

 the dorsal keel of the thorax is black, and the abdomen is 

 abundantly spotted with black ; the anal horn is yellow, 

 with three longitudinal black marks. I have been most 

 abundantly supplied with larvae and pupae, through the 

 kindness of Mr. George Lock, of Newport, Monmouthshire, 

 a gentleman who has distributed this interesting species 

 most liberally among subscribers to the * Entomologist.' I 

 believe the usual and almost universal plan of including this 

 butterfly with the familiar species of Pieris is a mistake : 

 several characters of the larva and imago would induce me 

 to separate it entirely from the genus, and place it near, 

 if not in immediate proximity with, the Doritidae. — Edward 

 Newman, 



Descriptioti of a Larva of Erehia Medea. — When full fed, 

 which was on the 1st of July, 1870, it rested in a nearly 

 straight position on the stalks or leaves of Agrostis canina 

 (the brown bent grass), and it fed in confinement exclusively 

 on the latter, but I cannot say whether this is the case in a state 

 of nature : these leaves appear to possess a revolute margin, 

 and hence to assume a somewhat tubular character: when 

 annoyed the larva seemed to grasp more tightly with its anal 

 claspers, and when compelled to relinquish its hold, it fell 

 among the grass and assumed a somewhat crescentic form, 

 the two extremities approaching, and in this position it 

 remained a while perfectly motionless ; after sufficient time 

 had elapsed for the disappearance of the supposed enemy, it 

 began to crawl, but all its movements were remarkably sedate 

 or even lethargic. The head is rather narrower than the 2nd 

 segment, into which it is partially received; it is scarcely at 

 all divided on the crown, has a slightly convex face, and a 

 rough surface resembling shagreen and composed of approxi- 

 mate warts, each of which emits a hair from its summit : the 

 body is obese, decidedly thickest in the middle, and diminish- 

 ing towards both extremities ; the division into segments is 

 not very manifest, and is rather concealed by a division of 

 each into four sections, each of which consists of a transverse 

 series of warts; thus the eye is attracted by the minor divi- 

 sions, and the major divisions, or segments, properly so called. 



