17U THE CANADIAN ENTOMOLOGIST. 



distinct from C. eurydice. Opportunities had been afforded of studying 

 all stages of M. chalcedon, with M. phaeton colonizing on the same plant, 

 so that the habits of the two species could be compared. 



Mr. Edwards has also raised Lycaena melissa from egg to chrysalis, 

 and finds that the larva in the last stages has similar organs to those of 

 Pseiidargiolus on the loth and nth segments, and that ants are attracted 

 in the same way by the sweet fluid they exude. Over loo eggs of Par- 

 tiassius, either sminthms or something close to it, have been obtained from 

 West Montana. h%Xo butterflies, the author stated that he had never 

 seen them scarcer than during the past year. An interesting discussion 

 followed this paper, in which several members took part. 



Prof Riley offered some " Notes on Fcedisca Scudderiana," and 

 exhibited plants of Solidago containing the larvae of this species, and 

 made some remarks on its habits which went to reconcile the published 

 conclusions and differences between himself and Dr. Kellicott, and to 

 show that while the insect is commonly a gall maker, it was also, excep- 

 tionally, an inquiline. The specimens showed that the habits of the 

 insect were variable, and that the larva was either a leaf-crumpler, living 

 in a bunch of curled terminal leaves held together by a silken gallery, a 

 stem-borer, without causing any swelling, or the maker of a more or less 

 perfect gall. He had also found it as an inquiline in the gall of Gelechia 

 gallceso/idaginis, the gall of which was always distinguishable from that of 

 the Psedisca ; among other things by the burrow of the larva always being 

 traceable from the blighted tip of the plant, whereas the Padisca larva 

 lived at first in the tip, and when making a gall always left the tip and 

 bored in at the side. Mr. Kellicott's observations were accurate so far as 

 they went, but did not take into account the variation in habit. Mr. 

 Riley had watched these larval habits during the present year from the 

 time of hatching, and had concluded that the insect combined, in varying 

 degree, the four characteristics of gall-maker, leaf-crumpler, stem-borer 

 and inquiline. The larva living in the crumpled leaves later in the season 

 had not been reared to the imago, but he had made comparisons of the 

 young larvae and found that they were exactly alike, but they showed con- 

 siderable modification as they developed, especially after the last moult. 

 Several other micro-lepidopterous larvse bored in the stems and lived 

 among the leaves of Solidago ; while another species, yet unbred, made 

 a gall similar to that of Paedisca ; but all the other larvse known to him 

 were easily distinguished from Paedisca. 



