274 THE CANADIAN ENTOMOLOGIST. 



medio-dorsal series is one-third from the front margin of the segment. 

 The lateral series and the infrastigmatal series slightly posterior to the 

 spiracle and in the same line. The supra-stigmatal series slightly anterior 

 to the spiracle and in almost the same line as the medio-dorsal series. 



Prolegs and thoracic feet white, slightly darkened towards the claws, 

 and all pretty thickly covered with white detiexed bristles. On segment 

 No. 2, instead of the large branched bristles which occur on the rest of 

 the body, are simple short thick bristles exactly similar to those on the 

 face, and each bearing at its apex a slender black bristle. The skin is 

 white and semi-translucent, allowing the green contents of the body to 

 show through. This together with the shape of the larva gives the 

 caterpillar a considerable resemblance to an Apatura larva. The inter- 

 segmental folds are white and the INI-shaped dorsal markings of Grapta 

 larvae are white and indistinct. The pale delicate green colouring of this 

 larva gives it a very un-Grapta-like appearance. 



PUPATION. 



On Sunday evening, June i6th, the larva was found to be suspended 

 for pupation. At 7.15 p.m. gentle undulations of the abdomen (peristaltic 

 motions), accompanied by straightening out and slowly drawing up of the 

 body, were noticed, and the contents of the body seemed to run down to 

 segments one to eight. 



7.25 — Last segment apparently empty. 



7.27 — Body drawn up several times and then straightened out, 

 undulations running along the body as if an effort were being made by 

 the insect to shrink away from its skin. 



7.35 — The bases of some of the thoracic tubercles pale as if air were 

 under them. These were the areas which afterwards in the pupa were 

 gilded. The skin at the base of the prolegs apparently loosening and 

 little folds showing. 



7.40 — Colour of the body darkening, the peristaltic motions con- 

 tinuing all the time. 



7.43 — The muscles apparently relaxed and the body hung down 

 almost the full length. 



7.45 — The body drawn up vigorously 3 or 4 times, the peristaltic 

 motions continued energetically and with some effort. 



8.00 — Muscles relaxed and the body hanging down loose again 

 without movement for about half a minute. 



