446 THE CANADIAN NATURALIST. [DeC. 



time to attack tlie young grass of the season. Of thirty-six galls 

 collected early last May, all produced the insect but three, which 

 were empty. I have not detected a parasite on the Eurytoma 

 during the advanced stage of the gall ; but about the first of August, 

 1863, when the galls were brought to my notice by Mr. Kirkwood 

 of the Crown Lands Department, I forwarded a few in the green 

 state to Baron Osten Sacken, thinking that they were produced by 

 a cecidomyia. He says, " It is not at all unlikely that Triticum 

 repens is infested by a cecidomyia, but in the specimens you sent 

 me I found nothing except a very minute larva of a hymenopte- 

 rous parasite." Since then I sent more advanced galls, together 

 with the insect, to Mr. Edward Norton, of New York, who is 

 considered good authority on American hymenoptera. He had 

 removed to New Orleans, where my letter found him, and he 

 answers, " that on account of his collection having been left in 

 New York, he was then unable to answer my questions " ; however, 

 he forwarded the galls and insects to Baron Osten Sacken for his 

 investigation. The baron writes to me as follows : "The insect is 

 a Eurijtoma, but whether it is E.fulvipes of Fitch, as you suggest, 

 I am unable to tell. This genus is very numerous and apparently 

 very difficult, as the species seem to vary in size, and most of 

 them have nearly the same coloring. I have reared numbers of 

 them from galls, without ever attempting to separate the species." 

 If it is E. falvijjes, then I may safely state that it does not 

 confine itself to a single species of plant, and any of the cereals 

 may be destroyed by it. To bring this insect before Canadian 

 entomologists is the object of this short notice ; and I only wish 

 that one of them will find sufficient leisure to investigate its com- 

 plete history. — Read before the Quebec Branch, Oct. Qth, 1864. 



MEETING OF BRITISH ASSOCIATION. 



OBSERVATIONS ON THE SALMONID^. 



Dr. J. Davy read the following paper, entitled " Some Observa- 

 tions on the Salmonidae, chiefly relating to their G-enerative Func- 

 tions :" — It is now well known as an established fact that the young 

 of the salmon in its parr-stage, has, in the instance of the male, the 

 testes fully developed, so as to be capable of impregnating the ova of 

 the adult fish. Bemarkable and anomalous as this must be admitted 

 to be, it is the more so considering that in the female parr of the 



