THE CANADIAN ENTOMOLOGIST. 61 



PIERIS BRASSIC^. 



BY ALBERT F. WINN, WESTMOUNT, P. QUE. 



On September 4th I found, feeding on leaves of Nasturtium, two 

 larvae which I had never seen before, and which agree exactly with figures 

 and descriptions of the larv?e of the " Large White Butterfly " of Europe, 

 Pieris brassicce. 



Both of these larvae succumbed to attacks of Hymenopterous 

 parasites, and while it is to be hoped that the rest of the larvae in the 

 neighbourhood have shared the same fate, it is scarcely likely, as there are 

 large fields of cabbage within a short distance of the place where the two 

 were found, and unless the winter kills them off, I fear we shall have 

 another immigrant to add to our list, and a most unwelcome one. Next 

 summer will tell the tale as to whether the species has established itself 

 permanently or not, and any specimens seen should be at once reported. 



NOTE ON SOME GEOMETRID^ IN THE HULST COLLEC- 

 TION, RECENTLY EXAMINED BY DR. DYaR. 



BY GEO. W. TAYLOR, WELLINGTON, B. C. 



Dr. Harrison G. Dyar, in the Proceedings of the Entomological 

 Society of Washington, VI., No. 4, has given us a very interesting and 

 important paper on the Hulst collection of Geometridce. 



In this paper he has shown, from an examination of the type 

 specimens, that a considerable number of Dr. Hulst's supposed species 

 are not really entitled to specific rank. Of course, any entomologist 

 describing as freely as Dr. Hulst did would be sure to make some mis- 

 takes and create some synonyms, and I have no doubt that Dr. Dyar is 

 perfectly correct in his judgment in the majo'rity of cases that he cites. 



When, for instance, lie tells us that the types of Thallophaga 

 faiitaria and Tetrads hyperborea are specimens of the well-known 

 Anthelia tiigroseriata, of Packard, we can readily believe it, because on 

 referring to Hulst's descriptions we can see that nlgroseriata must have 

 been the insect before him, and so we cross fautaria and hyperborea off 

 our lists, and it is the same in the case of most of the species with which 

 Dr. Dyar's paper deals. But there are one or two cases in which, while 

 not doubting Dr. Dyar's facts, I find I cannot accept his conclusions. In 

 these cases the Doctor's determinations of the types seem to raise a real 

 difficulty. For instance, he tells us that the type of Somatolophia 

 umbripen7iis is a specimen (a single female) of Aids Haydenata, and he 

 adds, " Thus both genus and species fall." 



