80 GLUPHISIA CEENATA. 



GrLUPHISIA CRENATA. 



Plate XXXIV, fig. 6. 



On the 10th of August, 1883, I received from Herr 

 Heinrich Disque about twenty eggs of crenata laid 

 loose both singly and in little clusters of two and four 

 or five together. 



The egg is round in shape, convex above and con- 

 cave beneath, the margin a little rounded off, in colour 

 a most delicate pale green, the surface having a pearly 

 lustre. They seemed to be rather less shallow and to 

 be filling out a little by the 13th, and on the morning 

 of the 15th nine of them were hatched. 



The newly-hatched larva is of a creamy-white and 

 without markings other than the black ocelli and the 

 brownish mouth, and an internal spot of greyish show- 

 ing very faintly through the twelfth segment. They 

 were placed on poplar (Populus nigra) and soon ceased 

 wandering and began to eat out small cells in the under 

 cuticle of the leaf, and in four days were eating quite 

 through the leaf, and one seemed on the fifth day 

 (August 20th) laid up to moult. At this time the 

 larvaB measured 4 J mm. in length, and were of an ex- 

 tremely pale whitish -green tint, the segments plump 

 and deeply cut on the belly. 



On the 22nd one had just moulted the first time, 

 one of the others was still laid up waiting on a little 

 carpet of silk spun on the bottle, the others on the 

 leaf. 



The individual just moulted had the head of a whitish 

 ground-glass-like appearance, the back of a faint tint 

 of yellowish-green, bounded by a subdorsal yellowish 

 line, so extremely faint as to be discerned with difficulty, 

 below all was of a faint whitish-greenish-tint ; length 

 4 mm. 



The next morning three more had got over their 

 first moult and their back was now distinctly green. 

 On the 25th they were still eating out little cells from 



