COPEIA 35 



In any case it helps them to see better the oral wea- 

 pon with which they are threatened. It should be 

 easier for them to meet the attack. 



On the whole it seems wisest to regard the dis- 

 play as merely incidental to the opening of the mouth 

 in attack and as quite devoid of biological meaning. 

 In its effect on food it is neutral; in its effect on ene- 

 mies the advantages and disadvantages seem to be 

 pretty well balanced. The disadvantages may have 

 rather the best of it. The analysis of the case may 

 help to an understanding of similar displays in other 

 forms. It suggests caution in interpreting them. 



Jacob Reighard, 

 Ann Arbor, Michigan. 



PIKE-FISHING INCIDENTS. 



The following incidents occurred during my va- 

 cation this summer in the Adirondack Mountains: 



On August 14th Dr. H — - and myself went 

 out pike fishing on Stony Creek Pond No. 1, in Cor- 

 ey s. At the time the incident happened I was rowing 

 the boat and the Doctor trolling, using a shiner for 

 bait. A pike was struck and after some play the 

 line came away minus bait, hook and an inch of the 

 gut to which the hook had been attached. Another 

 baited hook was put on and we continued around the 

 pond. On coming a second time to the spot where 

 the fish was lost there was another strike, and a pike 

 a little under two pounds was safely landed in the 

 boat. 



At the first cut I made in dressing this fish out 

 dropped a shiner with the Doctor's lost hook and inch 

 of gut snood fastened to it. The gut had been sawed 

 off by the pike's teeth. 



A few days later while fishing in the same place 

 the following occurred: 



I was still fishing, using a live perch as bait. My 

 first catch was a pike weighing in the vicinity of one 

 and a half pounds. He had swallowed the perch, and, 



