42 ' February, 



third, segment ; body rounded, slightly swollen from the segmental divisions ; it 

 gradually thickens from the head to the fifth segment, beyond which it is of nearly 

 uniform width to the twelfth, when it tapers off rather abi'uptly ; segmental 

 divisions well defined, the stin smooth and velvety. 



Grround-colour, as far as the spiracular region, purplish-brown ; head yellow- 

 brown, strongly marked with black, a streak of black extending from the top of each 

 lobe being most noticeable ; a narrow, polished, black plate on the second segment ; 

 dorsal line almost clear white, and on the dark ground is very conspicuous ; sub- 

 dorsal lines very indistinct — except in the plate on the second segment, where they 

 show clearly — and seem to be composed of an interrupted series of faint bluish- 

 white streaks and dots ; on each segment between the dorsal and subdorsal lines, is 

 a large, square, purplish-black mark, and these marks, together with the pale dorsal 

 line, form the most noticeable feature in the larva. There are no perceptible 

 spiracular lines, but the spiracles are black and very distinct. The usual trapezoidal 

 dots small and indistinct, of the pale colour of the subdorsal lines. 



Ventral area and prolegs uniformly dingy glaucous-green, with a purplish tinge ; 

 the anterior legs pale straw-colour, and having immediately in front, and also im- 

 mediately behind each of them, a short black streak. 



The larvae fed up well on birch, and on or about May 23rd, both 

 disappeared below the surface of the earth for pupation. 



The moths, perfect specimens, emerged together on June 16th, a 

 month earlier than the species is usually seen in a wild state in 

 Yorkshire. 



Huddersfield : January Ith, 1893. 



ADDITIONAL NOTES ON THE LAEVA OE OETROSIA SUSPECT A. 

 BY T. A. CHAPMAN, M.D., F.E.S. 



As Mr. Porritt did not see the young larva of O. suspecta, I add 

 a few notes of my own observations : — 



The eggs were packed closely together side by side, and appeared to have been 

 thrust in between two surfaces, and it resulted both from this (if so) and also from 

 a real identity, that they reminded me greatly of those of G. vaocinii. A closer 

 examination only confirmed this impression, the diameter was 0-8 mm., most of the 

 eggs were more or less distorted, indented, or flattened, so that it was only by 

 securing a favourable specimen that it was seen to have a fine cone, surrounded 

 by an irregular raised wall, formed by the summits of the ribs, about thirty-one in 

 number, and badly defined. The eggs were in places covered by a pavement of 

 battledore moth scales, whether purposely, or by accident, I could not be sure. 



I got some vaccina eggs to compare, and could really detect no difference. The 

 young larvae of both were much alike, but su.ipecia tied its leaves together more or 

 less, a habit which I have never noticed in vaocinii, the larva being satisfied with 

 such shelter as curled or applied leaves afford. 



When in their penultimate akins, they were of almost exactly the same outline, 

 suspecta much darker in colouring. In tubercles, head hairs, plates on second and 



