18 THE CANADIAN ENTOMOLOGIST. 



Mr. Scudder writes October ioth, T874, as follows : 



" I formerly believed this to be Pembina, having received it from 

 Edwards with that determination. I therefore named some of your first 

 lot (as Mr. Mead says) Pembina. Afterwards I received a lot from your 

 subsequent journeys, sent me by Grote. The specimens were poor and 

 much rubbed, and I thought when I determined them to be distinct from 

 the so-called Pembina, that <J and °. alike had a broad marginal band. 

 Mr. Edwards was the first to discover his own error, and drew my attention 

 to it. We do not know Pembina; it is temporarily lost to science, but it 

 will turn up one of these days. From Edwards' description and the 

 context, it is plain that your butterflies are not Pembina. After Conperi 

 was described, I saw many other and fresher specimens, and then dis- 

 covered my mistake (accepted and published by Grote) about the 

 •distinction between your two lots of butterflies, and found that although 

 Grote was in error in describing Conperi as distinct from the so-called 

 Pembina, the name must stand because the first one, apart from Pembina, 

 was given to an insect which was not Pembina. 



" There are but two known species of Glancopsyche in America : 



" 1. Lygdamus of the South. 



" 2. Conperi of the North, long supposed to be Pembina Edw., which 

 however belongs to a distinct group." 



papilio brevicauda, Saunders. 



I have received specimens of this butterfly from Perce', district of Gaspe> 

 the north shore of the Gulf of St. Lawrence. 



Wm. Couper, 67, Bonaventure Street, Montreal. 



colias ph1lodice. 



Dear Sir, — 



Mr. W. H. Edwards informs me that Mr. Mead has determined by 

 experiment that this species becomes crimson on the contact of the wings 

 with cyanide in the collecting bottle. This accounts for a supposed 

 variety of philodice sent me by an Entomological correspondent in good 

 faith as having been collected by her. The lady reported that she had 

 not particularly noticed the specimen at the time of capture, but on setting 



