150 CERURA VINULA. 



until the April of the year after that. (J. H., 17, 12, 



86.) 



N0T0D0NTA DROMEDARIUS. 



Plate XXXIII, fig. 2. 



Mr. Buckler figured this species, August 9th, 1860, 

 on birch ; and August 18th, 1868, on birch also. In 

 1858 I bred several moths, May 25th to June 1st, from 

 pupse found during the previous winter at the roots 

 of alders; in 1862 I again bred moths, May 11th to 

 June 6th ; in 1870, August 25th, I beat the larva from 

 alder not half grown; in 1871, August 7th, I again 

 beat the larva from alder, and bred the moth July 

 15th, 1872. In 1886 Mr. Bignell sent me a larva on 

 alder quite small, July 17th ; it moulted on July 22nd, 

 being 20 mm. long, but soon after died, because, as I 

 believe, I could not supply it with alder ; whilst with 

 me it ate birch, but not heartily. August 4th, Mr. 

 Bignell sent me another larva, I suppose full grown, 

 being rather less than 35 mm. in length. September 

 2nd, Mr. "W. H. B. Fletcher sent me several larvaB 

 and supplied me with alder for their food ; the smallest 

 of them was but 15 mm. long. 



This larva varies a good deal in colour ; when about 

 its last moult it seems to be most brilliantly coloured. 

 One at this stage, described this year, was brilliant 

 yellow all over, except the purple-brown dorsal mark 

 and brown head, the belly also brown except some green 

 patches between the legs ; afterwards there came some 

 vivid green marks on segments 9 — 11 and a subdor- 

 sal row of green slanting streaks on 6 — 11 ; the purple- 

 brown dorsal mark included the humps, but their tips 

 were yellow. This was a very handsome larva ; others 

 were more or less of a dusky yellow-brown all over. 

 The one I described most carefully was over 33 mm. in 

 length, with very irregular outline, especially when 

 at rest, the back being then humped and the hinder 



