THE ENTOMOLOGIST. 179 



this median pencil ; the 13th segment has six warts ; all the 

 warts emit radiating bristles ; the claspers, being divided at 

 the extremity, and the divisions spreading at right angles 

 with the shaft of the clasper, assnme the shape of a letter T 

 inverted. Colour of the head pale delicate gi'een ; ocelli 

 bro\vn ; dorsal area of the body delicate velvety green, inter- 

 rupted between the 5ih and 6th, 6th and 7th, and 7th and 

 8th segments, by a transverse band of intense velvety black, 

 which becomes strikingly conspicuous when the larva rolls 

 in a ring; in the incisures following these three a double 

 spot appears of the same velvety black, and there is also 

 a short black longitudinal line on each side of the 9th, 10th 

 and 11th segments; the four dorsal tufts are generally pure 

 snowy white, but sometimes tinged with yellow ; the caudal 

 pencil is pink; the bristles pale yellowish green ; the spiracles 

 concolorous with the ground colour, but surrounded with a 

 delicate black margin ; the ventral surface is intensely black; 

 the feet and claspers pale green : it is one of the most beauti- 

 ful of all British larvae. Having attained its full size, it 

 descends the tree on which it has been feeding, and spins, in 

 a crevice of the bark, a somewhat double cocoon, the silk 

 being intermixed with the hairs of its own body ; the outer 

 one is transparent and shapeless ; the inner opaqiie, com- 

 pact and oval : within this it changes to a rather obese pupa, 

 beset, more especially about the abdomen, with shortish hairs; 

 its colour is dark brown, the interstices of the abdominal seg- 

 ments being conspicuously paler. The moth appears in May 

 and June. I have watched the progress of this species from 

 the egg to the imago : the length of time occupied in the 

 larva state was about ten weeks, and on more than one 

 occasion ten days were occupied in moulting : I shall be 

 glad to know the experience of others on this interesting sub- 

 ject. I am indebted to Mrs. Hutchinson, of Grantsfiekl, for 

 a beautiful specimen of the full-grown larva. — E. Newman. 



Ellopia fascia ria and E. prasinaria. — "I have lately 

 solved, in a manner satisfactory to myself, an entomological 

 problem which has long remained in obscurity. Our earlier 

 authors generally treated Ellopia fasciaria and E. prasinaria 

 as two perfectly distinct species, while more recent entomo- 

 logists have regarded them as varieties of one species. If M. 

 Giienec had had the opportunity of examining the larva of 



