THE CANADIAN ENTOMOLOGIST. 19 



six to fifty-four parasitic cocoons of the same species as that before 

 observed. Some of the hosts had died during the process, others were 

 still alive ; but all further development was at an end in the case of the 

 latter, and at the end of eight days the last one died. Inasmuch as not 

 a single uninjured specimen was to be found among so many caterpillars, 

 I reached the conclusion that the place to look for the chrysalids was 

 under the ground, and that only these caterpillars which were forced by 

 the pressure of the circumstances which I have related, made excursions 

 to the upper world. 



The parasitic cocoons which I had collected disclosed the first wasps 

 on the 2oth day of June, and pupation, therefore, must have occurred 

 about the middle of May. Their hosts must, therefore, have awakened 

 from their winters sleep at the beginning of May, and, therefore, their 

 pupation, if everything had progressed favorably, would have taken place 

 probably in the course of the two following weeks. My diligent search 

 for pupfe was for a long while fruitless, until at last on the 25th of May 

 I succeeded in digging up one. It was lying free in the sand concealed 

 under the roots of grass. The transformation had just taken place, as 

 was shown by the skin of the caterpillar, which was quite fresh and still 

 clinging to the anal extremity. The chrysalis on the 24th of June dis- 

 closed the butterfly of (Eneis Bore in a beautiful male example. From 

 four to six days before the butterfly emerged from the chrysalis the wing- 

 sheaths had assumed a dark yellowish-grey, and at last quite bluish- 

 black colour. On the 31st day of May I found still another chrysalis of 

 the same species lying in the grass, but brown in colour. This produced 

 no butterfly, but, upon the 17th and iSth of June following, three speci- 

 mens of ichneumon-wasps of another much larger species than that which 

 had infested the caterpillar. 



In the spring of the year 1883, which, for our high latitudes, was 

 unusually early and warm, this butterfly was observed as early as the 

 middle of June upon the crag at Siidwaranger Prestegaarde. At Jacobsely 

 I found on the 15th and 20th of May, under moss in barren spots, con- 

 cealed among the roots of grass, two caterpillars, which both transformed 

 five days later, and on the loth and 13th of June following disclosed the 

 imagines (two ^ ^ ). The duration of the chrysalis stage of existence 

 was, therefore, scarcely three weeks. W. J. Holland. 



