THE DISTRIBUTION OF INSECTS IN NEW HAMPSHIRE. 355 



find females at this date with undeveloped eggs, this theory would seem 

 more plausible, and might throw some light on the origin of the vernal 

 series in the other species. It should be added that, in Europe, only one 

 brood has been observed among the mountain species of this genus. 



Probably no collector has seen more than eight or ten of these butter- 

 flies in a day's scramble among the mountains, but if sought early in July 

 they might be found in greater abundance. They fly close to the ground 

 among the scanty foliage growing in the rocky crevices of the steep 

 mountain slopes. Messrs. Sanborn and Whitney have often seen them 

 on the mountain willow, Salix Jicrbacea Linn., which grows but a few 

 inches above the ground. So frequent and prolonged were their visita- 

 tions to this plant, that these observers sought carefully but in vain for 

 eggs. It is more probable that the caterpillar feeds upon some of the 

 Violacese. 



28. Brenthis Bellona Herr.-Schaff. In New England this butterfly 

 appears to be as well distributed and as common as B. Myrina, although 

 elsewhere it is considered somewhat less abundant. 



29. PJiyciodes Tliaros Kirb. In New England this species is almost 

 everywhere exceedingly abundant. It is not uncommon even in the 

 White Mountain district ; but Mr. Smith, who has collected largely in 

 Norway, Me., writes that he has never seen a dozen specimens there. 



30. Charidryas Nycteis Scudd. In New England this is a very rare 

 insect. Mr. Sanborn has found a single specimen in the Glen, at the 

 base of the White Mountains, and Mr. Smith one at Walpole. The gen- 

 eral distribution of this insect leads us to anticipate its occurrence any- 

 where in the southern half of New Hampshire. 



31. Limucecia Harrisii Scudd. Specimens of the imago have been 

 taken among the White Mountains, and the sides of the Glen road 

 swarm with the caterpillars at the proper season. It has also been found 

 at Pittsfield (Treat), Dublin (Faxon), and Milford, rare and local (Whit- 

 ney). It seems to be more common in the elevated and northern dis- 

 tricts than elsewhere, and has seldom been found outside of the state. 



32. Euphydryas Phaeton Scudd. This butterfly is so eminently local 

 in its habits that it has not yet been found over the extent of country 

 which it probably occupies. In New England it is found abundantly 

 everywhere, from the heart of the White Mountains to the lower portion 



