52 PACHNOBIA ALPINA. 



only two, or at most three, pellets of frass to be found 

 with each larva each morning. 



The dorsal marks are diamond shapes of blackish 

 minute freckles. 



Subj. fig. 1, which has with me been feeding sparingly 

 since the 17th of June, is now (July 9th) laid up in pre- 

 paration for a moult, and in the afternoon of the 12th 

 it was accomplished ; it grew afterwards a little and 

 became like subj. 3 in colour and roughness, but was 

 not so large, and it ceased to feed and went to earth 

 on July 27th. 



Subj. fig. 2 died on July 20th. 



Subj. fig. 3 grew to be one and a half inch long and 

 stout in proportion, and uniformly so throughout, the 

 head being but a trifle smaller than the second segment, 

 and the thirteenth a little tapered behind ; this indivi- 

 dual about the middle of July was decreasing in bulk 

 and length, and though put then with earth it seemed 

 too late for it to go under or make up as I expected, 

 and it remained on the surface and died gradually. 



Subj. 4 kept feeding chiefly on arbutus and was but 

 little grown by the 7th of August. (W. B., 1880, 

 Note Book IV, 21). 



Thirty eggs of P. alpina sent by Mr. Meek from 

 Shetland arrived 9th July, 1880. They were precisely 

 similar to those of 1878, recorded in Note Book 

 III, p. 246. On the 13th of July they turned all 

 over a dingy brownish-slate colour, the coarse ribs 

 very glistening, and next day became a pale grey 

 colour. One larva was hatched on the evening of the 

 14th, and eleven more by next morning. 



The young larvse, in the course of a few hours, took 

 to birch and more sparingly to arbutus, and the next 

 day quite freely to whortleberry, and did well until I 

 left home for six days, when on my return on July 

 30th, I found all were dead but two ; another died 

 on August 4th, and the last on the 5th. (W. B., 1880, 

 Note Book IV, 23.) 



