270 ENTOMOLOGICAL NEWS. [Nov., 'o2 



on the 29th and 30th adult ca7iadensis were obtained from the 

 latter. In one spring which had been cleaned out during the 

 summer, it was fairly alive with wrigglers just or recently 

 hatched. Query if this is the hibernating crowd, the tail of 

 which will be found next May. I see no reason why these 

 larvae in the spring should not live in there throughout the 

 winter. Collections were continued from time to time and 

 minute larvae, evidently referable to this species were found 

 November 8th, after heavy frosts, forming ice half an inch 

 thick on exposed ponds. Other larvae were collected Novem- 

 ber 1 8th and 25th, and on the 26th, with tlie thermometer 

 ranging from 295^ to 36° in the open, the water in the spring 

 was found to be 45° — warmer than any other waters on the 

 place. 



It was intended to continue the.se observations during the 

 winter, but an attack of typhoid fever intervened, and not 

 until March 23 and 24, 1902, were systematic collections 

 again made by Mr. Miller H. Emley at Mr. Brakeley's orders 

 and under his direction. The result of this collection was a 

 large series of larvae of C. canadensis, ranging from less than 

 half to almost full grown, and all of these were sent me. 



We have, therefore, very small wrigglers recorded as late as 

 November 25, 1901, and somewhat larger specimens recorded 

 as early as March 23, 1902. The inference is that the winter 

 was passed in the larval stage, and as this was in running, 

 spring water which rarely reaches the freezing point, the infer- 

 ence does not .seem unwarranted. 



It should be said that in October and November, 1901, Mr. 

 Brakeley was .scouring the woods for the hibernating quarters 

 of Anopheles. He found the species of that genus, and Cukx 

 pungens in large numbers. He found no C. canadensis adults, 

 and the inference is fair, in view of the thoroughness of the 

 search, tljat there were none. Hibernation in the egg stage is 

 not excluded ; but unfortunately the egg of this species is not 

 known, nor is the place or manner in which it is laid. A send- 

 ing made (hiring the early i)art of April arrived in bad condi- 

 tion ; hut a collection made on the 22nd reached me safely a 

 day later. Adults l)egan issuing on tlie 24th and up lo the 



