218 THE CANADIAN ENTOMOLOGIST. 



plants has been observed." This is no longer true, for in the autumn of 

 1886 I was asked to look at the green-house connected with Mt. Auburn 

 Cemetery, to see if anything could be done to prevent the loss of geranium 

 cuttings by an insect, which turned out to be the same culprit. The bed 

 in which the cuttings were set was a long shallow wooden box or tray 

 placed against the northern wall of the green-house ; the tray was filled 

 with moistened sand and kept constantly warm by being directly over a 

 chamber heated by hot-water pipes. The ants thus found the precise 

 condition which they prefer, warm moisture, and the wooden sides of the 

 tray showed everywhere the characteristic gauges of the insect. The 

 geranium cuttings were plunged near together in the sand, and the ants 

 entering at the cut end had eaten out everything but the rind, and by the 

 time they had penetrated the cutting above the level of the sand, the 

 drooping leaves gave sign of the injury to the plant. Some, the leaves of 

 which had begun to turn black, were found to have been eaten to the very 

 bases of the terminal leaves, and a good deal of injury had been done, 

 hundreds of cuttings having been destroyed ; the trouble had been going 

 on, I was told, for a year. As a light porous soil is required for the cul- 

 ture of the cuttings, and a receptacle allowing the passage of the water 

 with a certain freedom, I recommended that the bottom of the tray be 

 made of slate or tiles of the material from which flower pots are made, 

 and the sides of zinc or other metal, high enough to come several inches 

 above the sand. 



ON COLIAS ERIPHYLE Edw., AND C. HAGENII Edw. 



BV W. H. EDWARDS, COALBURGH, W. VA. 



In my last paper I showed that C. Hagenii was a yellow form of C. 

 Eurytheme Bois., and I am now prepared to say that Hagenii is identical 

 with Eriphyle, and the name gives way to this. I described Eriphyle, 

 Tr. Am. Ent. Soc, v., 202, 1876, from about thirty individuals of both 

 sexes, taken in British Columbia, at Lake Lahache, by the late G. R. 

 Crotch ; and related that they were submitted to Mr. Henry Edwards, who 

 pronounced them distinct from any of the Pacific coast species, an opinion 

 with which I agreed. I said they came nearest Philodice, and pointed out 

 the differences, which seemed to be decisive against their being of that 



