234 H. A. HAGEN. 



figvre and description ; one specimen from Umea (fig. 19D) is similar. 

 The next to it is the specimen from Luneburg (fig. 19C). All the 

 others show the valves to be more or less shrnnken, or bent, or sepa- 

 rated, especially in the Kiel specimen (fig. 19B). Now, there can 

 be no doubt that all these different forms (see PI. x, fig. 19) are the 

 consequence of the shrinking after death ; and they may also result 

 even when the females have copulated and deposited the eggs, as I 

 have ascertained in several specimens. 



Mv first figure of the valvules of hudsonica (fig. 18A) is to be com- 

 pared with the first of diibia "lobes rap])roches, oblonges, tronques 

 au bout obliquement (fig. 19A)," the second (fig. 18B) to the last 

 ones of dubia. 



The hamules of both species are similar, but to be separated by 

 the black, polished, triangular projection, x, triangular in dubia 

 (fig. 12), narrower at base and larger on tip in hudsonica (fig. 18). 



The appendages of the males of the two species differ. Dubia 

 has the inferior appendage only half as long as the superioi's, the tip 

 of which is crenated. Hudsonica has the inferior appendage pro- 

 portionately longer, reaching the obliquely truncated inferior tip of 

 the superiors. 



The pattern and coloring of the two species vary much, but hud- 

 sonica has in some specimens of both sexes a spot on the 8th ab- 

 dominal segment, which I never saw in dubia. The color of the 

 labiu:n varies much in hudsonica, in .so far as the external margin, 

 in the feuiale, is pale and sometimes connected with a large white 

 spot, as in the male. 



I think hudsonica can be retained as a different species. 



9. Lieiicorliinia dubia Vander Linden. 

 [Northern and Central Europe. — Selys.] 



10. Lieucorliinia glacialis n. sp. 



[Hagen, Proc Bost. Soc Nat. Hist., xviii, p. 79, 1875. No de- 

 scription.] 



This species is related to intacta. I have sixteen males before me 

 from Massachusetts ; Cape Breton, Nova Scotia ; London, Ontario ; 

 jNIichipicoten on Lake Superior ; and Reno, Nevada (Mr. Morrison, 

 1878). [Elsewhere in his MS. Dr. Hagen refers to a male glacialis 

 from the White Mts. of New Hampshire, collected by Morrison.] 



% ■ — Abdomen 23-25 mm. Hindwing 24-27 mm. 



Labium milk-white; labium and lobes black ; thorax with a large yellow baud, 

 sometimes contracted after base. Wings as in intacta. Abdomen black, segmeut 

 2, and 3 to suture and a triangular spot after suture, yellowish brown ; no spots 

 or lines on 7 or 8 ; one specimen just out of the nymph, its colors not yet finished. 



