16 ENTOMOLOGICAL SOCIETY 
7. Leaf-like appendages before the mouth as broad as long, serrate on the 
j ,(. x ( Sayomyia americana l 
end &% 2 ' ^ .................. \Sayomyia hudsoni 
These appendages narrow, much longer than wide ................ 8 
8. These appendages serrate (fig. ,. .) . . 
These appendages smooth, at least outwardly, long pointed (fig. 2, /) 
(Sayomyia sp* 
\ Sayomyia rotundifolia 
Mr. Currie presented the following paper : 
DRAGONFLIES FROM THE KOOTENAY DISTRICT OF 
BRITISH COLUMBIA. 
BY ROLLA P. CURRIE. 
About a ye?r ago the writer gave the Society a general ac- 
count of the Kootenay District of British Columbia and of the 
three months spent there by Dr. Dyar, Mr. Caudell and himself 
in the study and collection of insects. The dragonflies consti- 
tute a group in which he is especially interested, but the effort 
to collect a good series of insects in all Orders prevented his 
devoting as much attention to the Odonata as he might have 
wished. Nevertheless, the collection of Kootenay dragonflies 
1 Mr. Johannsen separates the American form of plumicornis under a 
new name because the four spines of the antennae are equal in length. But 
Mr. Knab has called my attention to Weismann's article (Zeits. fiir wis- 
sensch. Zool., xvi, 1866) where the spines are shown of equal length in the 
European form. But Dr. Felt repeats the statement of the difference 
(N. Y. State Mus., Bull. 79, 370, 1904) and figures the leaf -like appendages 
of the two forms, which appear slightly different. I therefore provisionally 
use Mr. Johannsen's name. S. hudsoni Felt does not seem to differ in any 
tangible manner. 
2 Mr. Johannsen cites my figure of this species as indicating but two hairs 
on the anal segment. The figure is drawn as if of one side only; there are 
in fact four hairs, two on each side. To judge by Dr. Felt's figures, S. 
albipes Joh. differs in the smaller development of the serrations on the edges 
of the appendages. 
3 This may be the larva of 5. punctipennis Say or 5. rotundifolia Felt. 
The specimen was collected by Mr. F. Knab at Springfield, Mass. Dr. Felt 
says of rotundifolia that the leaf-like appendages have several rather large 
irregular teeth at the base of the long pointed process. In the form before 
me there is scarcely a trace of an irregularity anywhere, and it is, therefore, 
probably a distinct species. It may be called Sayomyia knabi, new species. 
