184 THE CANADIAN ENTOMOLOGIST. 



Pimpla pterelas, Say, of which species I have bred both the males and 

 females, the latter being by far the most abundant. 



Apparently, the male imago of Taxonas nigrisotna has not been 

 described, but it does not differ from the female in general appearance, 

 except by its much smaller size. 



Collected and observed in the Arnold Arboretum, at Jamaica Plain, 

 Mass., in June, 1890 : the saw-flies noted as emerging from the stems of. 

 the Polygonum about June 30 and some days later. For the determina- 

 tion of the food plant I am indebted to Prof. William Trelease. 



Taxonns dubitatus, Nort. The larvae of this species are of a light 

 grass-green colour, so that it is not an easy matter to detect them when 

 resting on the fronds of the Sensitive Fern (Onoclea sensibilis) upon which 

 they feed. I have bred the saw-flies from the larvae, but made no critical 

 notes as to peculiar markings, if any exist. There are certainly no spots 

 or markings large enough to be noticeable by a casual look, the whole 

 effect being green. 



The saw-flies of this species appear as early as the latter part of May 

 and the beginning of June, and are also very abundant about the fern 

 early in July, so that there must be at least two, and possibly more, 

 broods. The males were seen in greatest abundance. 



When at rest both males and females fold their legs and antennae, and 

 drop to the ground on very slight alarm. 



Collected and observed at Jamaica Plain, Mass., in 1890. 



NOTE ON COPIMAMESTRA AND EULEPIDOTIS. 



BY A. R. GROTE, A. M., BREMEN, GERMANY. 



In discovering a North American representative ot the European 

 Brassicce, I proposed for this latter and our Occidentis the generic title 

 Copimamestra, based on the tibial claw. In the Philadelphia List the 

 term Barathra is resuscitated out of Hubner's Verzeichniss, p. 218, for 

 the genus, but incorrectly. Hiibner refers two species. Brassicce and 

 Albicolor, to his genus, and I was free to use for one of them the new 

 term. I need not state that Hiibner took no note of the structure of 

 Brassicce, and that Albicohr differs structurally I must therefore insist 

 that Copimamestra be used for the two species Brassicce, and Occidentis 

 under the laws of scientific nomenclature. 



In the Canadian Entomologist, when discussing Hubner's figures 

 of North American Noctuidae in the Zutraege, I drew attention to his 



