284 THE ENTOMOLOGIST. 



the above is to record an instance of a fact new to me (though 

 perhaps familiar to others), that out of a single batch of eggs 

 laid by one female there should be a portion (about one-third) 

 destined, evidently by something in their own nature and vital 

 force (quite independent of all surrounding circumstances), to 

 develope thus rapidly to the perfect form, while the rest, under 

 precisely similar treatment, made the slowest possible progress, 

 through retaining every appearance of health and vigour, evidently 

 intending to pass the winter and feed up in the following spring 

 or early summer, not to appear probably in the perfect state until 

 June or July, 1883. The time from the deposition of the eggs 

 to the appearance of the first moth was seven weeks. — 0. P. 

 Cambridge ; Bloxworth, November 1, 1882. 



CiDARiA RussATA AND C. iMMAN ATA. — With reference to the 

 remarks made by me on page 253 of the ' Entomologist ' for the 

 present year, that the Cidaria immanata taken in the Island of 

 Arran, could, at a little distance, be scarcely distinguished from 

 the Cidaria russata of the Outer Hebrides, I have since had the 

 advantage of critically examining a large series of the insect 

 from Arran, with Mr. Howard Vaughan, whose special knowledge 

 of the two species is much greater than my own ; we have arrived 

 at the conclusion that the Cidaria taken in Arran is specifically 

 identical with the Hebridean local variety, and that both are un- 

 doubtedly Cidaria russata. Cidaria immanata has been taken in 

 Arran by Mr. Howard Vaughan, so that all that is necessary is to 

 add the name of Cidaria russata to the list of Macro-Lepidoptera 

 taken in Arran. Phasiane loalumharia should also be added to 

 the list of the insects captured there. It is a remarkable fact 

 that these two species, Eubolia and Cidaria, should be so closely 

 alike that an experienced collector, as Mr. M'Arthur undoubtedly 

 is, should have been mistaken in the species, particularly as he 

 had also captured in some numbers Cidaria immanata in Shet- 

 land. I have in my own cabinet a specimen of Cidaria russata 

 from Arran, singularly like some of the varieties of the poly- 

 morphic species Cidaria immanata ; indeed I confess I thought it 

 was of that species.— J. Jenner Weir; 6, Haddo Villas, Black- 

 heath, S.E., November. 1883. 



Notes on hypsipetes elutata and Cidaria russata. — Mr. 

 Jenner Weir, in his paper on ' The Macro-Lepidoptera of the 

 Isle of Arran,' at Entom. xv. 253, suggests that the larvae of the 



