234 THE CANADIAN ENTOMOLOGIST. 



The Chrysalis. — Distinguished at once from the chiysalids of inis^ 

 augustiis and niphon by its squat, compressed appearance, the abdomen 

 being relatively stouter. This may be readily seen by comparing the 

 figures (i, 2 and 3) in plate 5 with the figures of irus and augustus pupte 

 given in Vol. XXXVIII, No. 6 (June, 1906) and plate 3 of the current 

 volume (May). 



Ground colour warm orange-brown, marked with very dark brown, 

 as follows : Each abdominal segment with a moderately large medio- 

 dorsal blotch crowded toward the posterior incisure ; a larger supra- 

 lateral area from just above the spiracle to a point somewhat dorsad of 

 the lateral pit, extending the entire width of the segment and including 

 the lateral and infra-lateral pits, which are black ; a rudely-triangular 

 infra-stigmatal spot, largest near the posterior incisure-, tapering forward ; 

 on the ventral surface of those segments not covered by the wing-cases a 

 few scattered, minute spots. The metathorax and sides of the mesothorax 

 are of the same deep brown (in a strong light burnt-sienna), leaving the 

 orange-brown as an irregular mediodorsal streak. Prothorax with an 

 obscure dark transverse stripe near the posterior incisure, and a medio- 

 dorsal slender line of the same colour. Face and wing-covers very dark 

 from the many crowded small spots. Spiracles very noticeable, each bright 

 yellow, set in an orange-brown area, except the thoracic. Prothorax with 

 a delicate medial "ridge." Described from three specimens showing 

 scarcely any variation. 



Were it not for the fact that the darker colour covering most of the 

 surface has been determined to be due to the presence of pigment I should 

 have spoken of this as the ground colour, and the smaller orange-brown 

 areas as markings. Such a description would have been, perhaps, easier 

 to apply in identifying the pup;e, but would not have been accurate in the 

 use of terms. 



Possible Correlation between Larval Characters and Sex. — Unfor- 

 tunately the numbers afiixed to the leaf beside each chrysalis became 

 detached, and the suggestion offered here is based upon my memory of 

 wMiere the three caterpillars spun their final mats and the position of the 

 numbers as they lay after having fallen off. I regret that it did not occur 

 to me to sketch the larvae as they rested upon the leaf. To the best of 

 my knowledge and belief the green caterpillar yielded a larger pupa 

 containing a female ; the two red larvte yielding smaller pupae containing 

 males. I shall endeavour to verify this with others now being bred. 



