226 THE CANADIAN ENTOMOLOGIST. 



somewhere a statement in print to the effect that the Park is remarkably 

 poor in insect Hfe. It would appear from Mr. Hubbard's letter that this 

 notion had to be considerably modified, at least so far as the Coleoptera 

 are concerned. 



The Secretary then read the following paper : — 

 INSECT LIFE IN THE HOT SPRINGS OF THE YELLOW- 

 STONE NATIONAL PARK. 



BY H. G. HUBBARD. 



Pleasant Valley Hotel, August 7, 1S91. 

 " The arrangements we had to make with the proprietors of the stage 

 line gave us a trip of five days from Beaver Canon to the mammoth Hot 

 Springs for $35 apiece, there being three of us. But if we stopped over 

 anywhere it was $10 extra ; it was also $10 extra to make the trip to 

 Yellowstone Lake. But I am very glad we did not omit this, as it is by 

 far the most delightful part of the Park. As the distances in the Park 

 are tremendous, you can imagine I had not much time for collecting, and 

 most of the insects I did get were taken when I could get out and walk 

 while the carriage was going up some long hill. However, we had an 

 entire day at the middle and upper geyser basins, as we had to travel only 

 eight miles. There were hundreds of pools and geysers to visit which 

 would have more than occupied the entire day if I had not skipped most 

 of them. I, however, sa.w three of the large geysers play, and that was 

 quite sufficient. These geysers and hot springs always build up either a 

 hill, or if there are many of them together, they form, perhaps, immense 

 terraces, covered with pools full of boiling water, and generally running 

 over in thin streams. Millions of insects fall into these transparent pools, or 

 get suffocated by the steam, and their dead bodies are floated to the edge 

 of the basin, and there, in a few hours, they are coated with lime. 

 Around all the pools and geysers and everywhere in the Park, where 

 hot sulphurous water is running over the ground and forming tepid or 

 hot pools, there is to be found Cicindela hcemorrhagica. At the mam- 

 moth hot springs on the terraces, where the hot water forms shallow 

 basins, I saw this Cicindela running along the edge of the flutings, where 

 the water, quite warm, was pouring over the rim. They did not hesitate 

 to run in the water where it was one-eighth of an inch deep. I thought 

 they must be there for some predatory purpose, so I examined these 

 basins carefully, and, sure enough, there were thousands of minute gnats 



