ON THE LEPIDOPTERA-RHOPALOCERA OF HUDSON'S BAY. 51 



secondaries of the latter species as having all the spots buff, some 

 of them occasionally sprinkled with a few scales of silver ; in the 

 three Moose specimens all the spots are of a brilliant silver. 

 The insect much resembles A. aglaia, but, like A. atlantis, the 

 ground colour of the under side of the secondaries is of a rich 

 chocolate. 



Grapta comma, Harris. — Very much resembles G. c- album, 

 Linn. 



Pieris protodice, Bois. — Like a faded specimen of P. dapli- 

 dice, Linn. ; but one specimen was taken. 



Pamphila peckius, Kirby. — Evidently the American repre- 

 sentative of P. sylvanus, Fab. ; common. 



Heteropterus mandan, Edw. — Much resembles H. paniscus, 

 Fab. ; common in 1883, but not observed before. 



Nisoniades brizo, Bois. — Closely allied to N. tages, Linn. ; 

 three taken. 



Two European species, but not of British genera, were taken, 

 viz. : — 



GUiieis jutta, Hub. — It would seem to be rare, as Mr. Hay don 

 took but one. 



One specimen of the widely distributed Danais erippus, Cram., 

 was captured, and also one of Limenitis arcluppus, Cram., which 

 so closely resembles the Danaine species, and departs in so 

 remarkable a manner from the coloration of all other American 

 and European species of Limenitis, that it is undoubtedly a 

 case of mimicry ; both sexes are alike in colour, and in this 

 respect the mimetic resemblance differs from that between Danais 

 chrysippus, Linn., and Diadema misippus, Linn., in which latter 

 species the female alone mimics the Danaine form. 



Four other species remain to be mentioned, which have more 

 or less close allies on the European Continent, viz. : — 



Maniola {Erebia) discoidalis, Kirby. — Staudinger places this 

 species next to the European M. disa in his Catalogue, with the 

 remark, "an spec, diversa"; the insect from Moose is entirely 

 without ocelli in all the wings, either on the upper or 

 under side. 



Argynnis aphirape, Hub., var. triclaris, Hiib. — Whether the 

 American A. triclaris is distinct from A. aphirape must be left for 

 future investigation ; the specimens from Moose are larger than 

 my Eussian specimens of A. aphirape, var. ossianus, but I am 



