LBPIDOPTEEA NYMPHALIDAE MELITAEA PALLA. 759 



Unfortunately, none of the specimens reached maturity, so that the 

 species remains a matter of conjecture ; but Nubigena is by far the most 

 abundant Melitcca in their locality. 



MELIT^EA EUEYTION, Edw. 

 Melitwa Eurytion, EDW., MS. 



This species is found associated with Nubigena in Colorado, but is 

 much rarer, and does not seem to range to quite so great -elevations. The 

 most obvious point of distinction from Nubigena is that the yellow spots of 

 the latter are largely obscured in Eurytion by fulvous. 



tMELITJSA LEANIRA, Felder. 

 PLATE XXXVII, FIGS. 5, 6, 7, 8. 

 Melitcea Leanira, FELDER., Lep. Frag. Wien, 1859. 



This species, which is by no means rare in California, has been taken 

 in Southern Arizona by the expedition. 



tMELITLEA PALLA, Boisd. 

 Melitcea Palla, BEIIR, Proc. Gal. Acad. Nat. Sci., 1803. 



This species was taken by the expedition of 1871, probably in Utah 

 or Nevada. It is not known to occur in Colorado. Mr. Henry Edwards 

 writes regarding it: 



"This is one of the commonest and most variable of Pacific coast but- 

 terflies, and is found in every canon in California and Oregon from April 

 to July. It is dimorphous one form of the female being blackish, while 

 the other is foxy-red. All intermediate grades are found, and suffused varie- 

 ties are by no means rare. 



"On a sunny day in May, this insect maybe seen in countless numbers 

 settling upon flowers ; and as it is rather a lazy species, good specimens are 

 easily obtained. The form described by Dr. Behr as M. Whitneyi is, I 

 think, only a mountain variety, as I have recently met with some specimens 

 near San Francisco which bear a remarkable resemblance to his types." 



"Larva. Dull-black, with a double dorsal row of orange spots, forming, 

 when viewed longitudinally, two interrupted lines. In the spaces between 

 the spots are some irregular white patches. Along the sides are two sirni- 



