232 H. A. HAGEN. 



Six males and tour females from Saskatchewan River and Fort 

 Resolution, Hudson's Bay Territory by Kennicott. Abdomen 27 

 ram. Hindwing 30 mm. 



This s|)ecies is intermediate between pedoralis and rubicunda. Of 

 pedoraUs it has the stature, the somewhat brighter colors, and the 

 vulva of the female. Otherwise it is decidedly very near to rubi- 

 cunda by the wings and the thinner abdomen. PI. x, fig. 10, shows 

 the hamulus, viewed from the side. In rubicunda the membrane m. 

 is inflated in lifetime, and in some specimens after death. This shape 

 is figured by me in the " Revue des Odonates" PI. 1. I have not 

 seen such inflation in the other four European species even when 

 alive. All my figures represent the hamulus opened, as it is when 

 no copulation is in progress, — the regular position. But as I stated 

 before, the basal branch (I have marked the articulation) can be 

 shut in just as the blade of a pocket-knife. I have, for comparison, 

 given the figure (PL x, fig. 11) of the hamulus of rubicunda when 

 the membrane is not inflated. 



The " piece anterieure" of borealis is similar to that of rubicunda ; 

 the long pointed brush of hairs, always present in pedoralis, is want- 

 ing in borealu. The vulva of the female (PI. x, fig. 21) decides the 

 difference between borealis and rubicuuda. But there is another 

 difference : borealk, both male and female, has always a large red 

 spot on the dorsum of the eighth abdominal segment, just as on the 

 seventh and preceding segments. Rubicunda and pedoralis never 

 have this spot. 



6. Licucorhiiiia riibieuiida Linne. 



[Northern and Central Europe; Northern Asia. — Selys.] 

 I have again com[)ared the male rubicxinda from AVilni, Siberia. 

 As I have stated long ago, I find no difference, except the shape of 

 the inferior appendage (PI. x, fig. 5), which may be after all a dif- 

 ferent variety. 



7. l<eueorliiiiia proxiina (Hagen M.S.) Calvert. 



[Hagen, Proc Bost. Soc. Nat. Hist, xviii, p. 79, 1875 (no descrip- 

 tion). Calvert, Trans. Amer. Ent. Soc. xvii, p. 38, pi. v, figs. 5, 6, 

 1890. Leucorhinia perversa Hagen, MS. 



I have described only the niale, my types being from Manchester, 

 Kennebec County, Me., and Pictou, Nova Scotia. Dr. Hagen's types 

 of perversa, at one time supposed by him to be a distinct species, 

 were three males from Cape Breton, Nova Scotia, and one male from 

 Massachusetts. In 1875, Dr. Hagen also indicated proxima from 

 the White Mountains of New Hampshire.] 



