272 May, 



loose scales three of the round flattish cocoons ; one was empty, and had previously 

 contained the larva whose history had just been giveii ; another held a dead larva ; 

 and the third Dr. Wood kindly enclosed to me, which I received (together with an 

 infested cone) October 8th, 1879. 



This round, flattish case, containing a larva, I figured on October 23rd, and kept 

 apart with a bit of an old cone quite dry of the year 1877- 



The infested cone that came with it I also kept separate. In writing to Dr. 

 Wood I expressed an opinion I had held for some time, that the small larvse I had 

 received from him late in autumn in former years could not be full grown, as they 

 did not produce a moth, though I had kept them over two years ; but that when a 

 larva came from him to me much larger than any I had before seen, more than 

 double the size of the others, that larva produced the moth. A fact which seemed 

 to point to the larval life extending over two seasons. 



To tills Dr. Wood replied as follows : — 



" It seems to me the question you have raised as to the length of the larval life 

 of ahietella is a very difficult matter. I told you all the larvse do not form the 

 round cocoons, and I think it is more especially the earlier and better fed ones that 

 do not. This is in favour of your views, but against it is the unquestionable fact 

 that the full-fed larvee construct them. Then again, the insect I bred this summer 

 occupied just such another cocoon ; it deserted it in May, showed no desire to eat, 

 but at once began to construct an ordinary shaped one in which to pupate. 



" The impression conveyed to my mind by these facts has been, that at a com- 

 paratively rei 3nt time in the history of this insect it was a two years' feeder, making 

 use of these ound cocoons in the first year as hibernacula, but that, although it has 

 now becomf one year feeder, the memory of the old habit is not altogether lost, 

 and is calle nto action perhaps by the lateness of the season or want of nutritious- 

 ness in the i, id, causing the larva to be somewhat imperfectly fed. But it is an 

 intricate question." — October llth, 1879. 



A NEW SPECIES OF CR AMBUS FROM COLORADO. 

 BY T. D. A. COCKERELL. 



Mr. Henry Edwards, of New York, has been kind enough to 

 examine a box of moths collected by me last year, and, among several 

 other species of interest, is a Grambus to which he appends the note 

 " not described," and which I therefore characterize as follows : — 



Ceambus ul^, n. sp. 

 Length, 9^ mill. ; alar exp., 24 mm. Primaries warm yellowish-brown, sufPused 

 with a dark shade (inclining somewhat to reddish-brown) on costa, extending over 

 about one-third of the wing. There is a slightly paler patch (1 mm. long) on the 

 costal margin near the apes. Of the area below the dark shade, the inner three- 

 eighths is pale yellowish-brown, sprinkled with blackish and with pale scales ; beyond 

 this there is an indistinct but rather broad oblique band, composed of an inner pale 

 and an outer dark portion. External to this is another band, similar in proportions, 



