136 THE CANADIAN ENTOMOLOGIST. 



NOTES. 



A CORRECTION. 



In Entom. Amer., Vol. VI., p. 173, in my description of Euchaetes 

 conspicua there is erroneously inserted : " This insect comes near E. cada- 

 verosa, Gr.," etc., etc. This should read : " This insect comes near E. 

 abdojnifia/is, Gr. It is easily recognized by its conspicuous costal lines. 

 E. abdominalis is a Florida insect, whilst this seems to be the Colorado 

 representative." Entom. Amer. having ceased to appear, you will confer 

 a favour on me by publishing this in your esteemed paper. 



B. Neumoegen. 



NOTE ON AMMOPHILA ROBUSTA. 



Sept. 20, 1890, I was collecting along the sunny side of a railroad 

 embankment, where several species of digger wasps were plentiful. I 

 stopped to watch the operations of a female of the above species. She 

 was opening a filled-up hoJ£, and soon pulled out a larva resembling that 

 of the cabbage Plusia, nearl»»grown. She laid it three or four inches 

 from the hole, and was standing over it, apparently resting, when another 

 wasp of the same species alighted about six inches away, and, without an 

 instant's hesitation, attacked No. i, which had turned to face the assault. 

 The fight which ensued was of the most spirited character. They 

 " clinched " at the first onset, and remained in that position, their ventral 

 surfaces in close contact, and the body of each closely embraced by the 

 fore and middle legs of the other. One had grasped the neck of the 

 other with her mandibles, and both were striving to use their stings, their 

 abdomens being curved so as to bring these weapons into favorable posi- 

 tion. These details I gathered one at a time, for they did not lie still by 

 any means, but went rolling, scratching, and buzzing down the side of 

 the embankment. On account of grass stubs (the vegetation had been 

 burned off) their progress downward was not rapid, and after nearly a 

 minute they were About two feet from the starting place. Neither seemed 

 to have gained any advantage. At this point a third specimen arrived, 

 and threw herself upon the other two. The fight was now more vigorous, 

 if possible, than before. After a few seconds one released herself and 

 ^w away. A second soon followed suit. The third, apparently under 

 grftat excitement, dashed wildly about, seeming to be looking for the larva 

 before mentioned. From this I supposed her to be the one I first observed. 



