68 



we have seen ; it also has a certain percentage of the 9 's yellow. We 

 figure $ 's of all three forms for comparison. 



Gigantea Stkr. described from Hudson Bay and at present placed 

 as a form of pelidne seems to be the same species as that named 

 pelidneides by Staudinger from material from the same locality. We 

 have recently examined the type series of gigantea in the Strecker 

 Collection and believe that it represents in reality the yellow form of 

 christina rather than a race of either pelidne or palaeno ; the size and 

 maculation of the underside point very decidedly to this and the 9 's 

 can scarcely be separated from the paler forms of christina 9 . Mr. 

 Wolley Dod mentions this yellow form in his List of Alberta Lep- 

 idoptera (C. Ent. XXXIII, 169, 1901) and besides a series from Cal- 

 gary we have before us specimens of both sexes from Chatanika, 

 Alaska which agree excellently with Strecker's specimens. It is very 

 possible that the Ft. Simpson specimens mentioned by Scudder in his 

 description of occidentalis really belonged to this yellow form of 

 christina and for this reason we would restrict the name occidentalis 

 to the Vancouver Is. form which, while close, can at once be distin- 

 guished by the much greater suffusion of black at the base of both 

 wings on the upper side, approaching in this respect chrysomelas Hy. 

 Edw. We figure both sexes of gigantea from Chatanika, Alaska. 

 (PI. V, Fig. 7-9.) 



EUREMA GUNDLACHIA Poey. 



Holland's figure of this species (Butt. Book, PI. 37, Fig. 1) rep- 

 resents the 9 , not the $ as stated. The S is very similar to pro- 

 terpia but generally lacks all trace of the black on the veins and has 

 the tailed secondaries. It seems to occur in the same localities as 

 proterpia and specimens of this latter species without the black vein- 

 ing (as sometimes occurs) are very apt to be confused with gund- 

 lachia; the 9 proterpia has usually considerable black marginal bor- 

 dering on the secondaries but is otherwise similar to gundlachia apart 

 from the wing shape. 



E. blakei Mayn. 



We cannot see why this should be made in Dyar's list a form of 

 gnathene Bdv. (not gnat heme) a species described from Yucatan 

 which is white with a complete black border to both wings, broaden- 

 ing out on the apical portion of primaries to twice the width of the 

 lower portion. Maynard's description states 'greenish white above, 



