202 THE CANADIAN ENTOMOLOGIST 



snow before they are quite dead, they will soon commence to struggle, stretch 

 their legs and eventually recover entirely. I also noticed that if carried in a 

 closed match box in one of my pockets they only lived a very few hours; possibly 

 a large male, under these circumstances, might live 3 to 4 hours. If they were 

 walking over the snow and my warm hand was placed near them they would 

 hurry away from it. On the other hand, they would walk quite freely over my 

 snowshoes, which of course were cold, thus proving to me that it is warmth 

 that they retreat from. 



There is another peculiar feature in their habits that I have noticed. They 

 have an extremely strong grip, and it is very difficult indeed to shake them loose 

 from anything to which they are attached. For instance, it is hardly possible 

 to shake them loose from the match-box in which I have frequently stored them 

 when collecting, and it is equally difficult to remove them from sticks or thongs 

 of snowshoes. 



Apparently their object in travelling so rapidly over the snow is to enable 

 the sexes to come together. When they were active on stormy days in April, 

 I have captured numbers of both sexes, placing them in my collecting box, and 

 it was only a few moments before copulation took place. The sexual grip is 

 also very strong, it being retained even when placed in alcohol. 



My attention has been drawn to the article in Psyche by Werner Marchand, 

 who mentions that Chionea is affected by the warmth of the hand and that it 

 travels in straight lines. I could have made fuller observations on this insect 

 if I had known it was of interest. For instance, I could have found out whether 

 copulation takes place in other months than April. It was my belief that 

 Chionea was predaceous on the snow fleas but I have changed my opinion, the 

 snow fieas being very active in warm, thawing weather, whereas Chionea is not 

 abroad in such weather except to a very limited extent." 



CORRECTIONS TO MR. GUNTHORP'S SUMMARY OF WOOD'S 



MYRIOPODA PAPERS. 



It seems desirable for the benefit of those not familiar with the literature 

 of the subject to call attention to certain inaccuracies in Mr. Gunthorp's recent 

 "Summary of Wood's Myriapoda Papers."* 



1. Mr. Gunthorp states that Wood's first paper "described four species 

 as new." As a matter of fact twenty new species are there described. 



2. Likewise incorrect is the statement that in the second paper, "On the 

 Chilopoda," "twenty-nine new species are included."' There are really forty- 

 five described as new. 



3. It is written that Wood's paper on "New Polyzoniidsc" is "the one 

 paper he wrote on foreign material." On the contrary, Wood's first paper, 

 mentioned above, is based chiefly on foreign material, sixteen of the twenty 

 new forms described being exotic; and in the second paper, on the Chilopoda, 

 seventeen exotic species are described as new. 



4. The number of species described by Dr. Wood "from elsewhere" than 

 the United States is said to be two. The number is actually thirty-five. 



♦Canadian Entomologist:, May, 1920, p. 112. 

 September, 1920 



