146 THE ENTOMOLOGIST. 



highly glabrous, the face flattened, the crown slightly notched : 

 body obese, deeply incised at the divisions of the segments ; 

 the thoracic segments, namely, the 2nd, 3rd and 4th, are 

 dilated at the sides, and the Snd segment also in front ; the 

 dorsal areas of these three segments unite in forming a shield; 

 the 5th, 6th, 7th, 8th, 9th and lOih segments have each a 

 transverse dorsal ridge, very prominent and conspicuous, 

 which terminates on each side in a kind of lobe or festoon, 

 containing the spiracle : the ventral area has also gibbous pro- 

 jections, somewhat corresponding with those on the back, 

 but proportionally less, in order to allow of the arched 

 position in which the larva usually rests ; scattered over the 

 dorsal area are miimte warts, few in number and very incon- 

 spicuous in appearance ; each of these emits a small bristle. 

 Colour of the head apple-green, the cheeks sparingly and 

 inconspicuously irrorated with black : body apple-green ; the 

 crest of each dorsal ridge is of a rich velvety oil-green, thus 

 forming a series of conspicuous transverse bands, the inter- 

 stices being pale apple-green ; the lateral lobes or festoons 

 are in some specimens apple-green, but in others of a most 

 beautiful rose-colour, and this again is bordered below by 

 the most intense velvety black ; this black border descends 

 into the anal, but not into the ventral claspers ; the dorsal 

 area of the lOlh and 12th segments is smoke-coloured, fading 

 at the lateral margin into green, and then decorated with 

 blotches of rose-colour : the spiracles are reddish ; the ven- 

 tral area, legs and claspers are delicate apple-green : the 

 hairs or bristles are black. At the end of August most of 

 these larvaj spin up amongst the flowers of the food-plant ; 

 others descend to the surface of the earth, and there change 

 into short, obese, glabrous pupaj, haviug the head rather pro- 

 jecting and rounded ; the thorax very convex ; the wing- 

 cases ample, and the anal segment very slender and horn-like, 

 directed backwards, and bearing at its extremity two stout 

 divaricating bristles. Colour of the head, thorax and wing- 

 cases transparent olive-green, of the abdomen testaceous- 

 brown. The moth appears on the wing in July, — Edward 

 Newman. 



Life-history of Cymatophora ridens. — The eggs are laid 

 on the twigs of Quercus robur (oak) in April, and the young 

 larvaj emerge in the beginning of June, and spin for them- 



