134 THE BUTTERFLIES OF NEW ENGEAND. 



faunas we liavc mentioned accentuates the distinction which exists between 

 eastern America and Europe, and tlie agreement found between western 

 America and Eiu'ope. 



BIBLIOGRAPHY. 



Those wishing details concerning the vertical distrilmtion of Swiss butterflies should consult 

 Speyer's Geographische verbreitung der sclnnetterliuge Deutschlands und der Schweiz (1858) ; 

 or Meyer-Diir's Verzeichniss der schnietterlinge der Sehweiz (1852). Brief notes of my own 

 on Alpine butterflies will be found in the Geology of New Hampshire, i : 343, Bost. journ. 

 uat. hist., vii : 612, and Appalachia, v : 13, where tlie present excursus with sliglit variations was 

 lirst pul)lished, and with the same map. See further. White on the Mountain Lepidoptera of 

 Britain, Scott, nat., v: 97; and also Mead, Psyche, i: 179, where some notes are given on the 

 Alpine fauna of our Pacific slope. 



Table of specAes of Oeneis, based on the egg. 



Vertical ribs broken near the base of the egg into bead-like prominences semidea. 



Vertical ribs continuing to the base of the egg unbroken jiitta. 



Table of species, based on the caterpillar at birth. 



Anal prolegs much larger than the others. Terminal segment squirely truncate on either side, 

 each side with two terminal hairs seiuidea. 



Anal prolegs no larger than the others. Ter.ninal segment regularly tapering on either si le, 

 each with only one terminal hair jutta. 



Table of species, based on the mature caterpillar. 



Supralateral stripe broad, discontinuous semidea. 



Supralateral stripe narrow, continuous jutta. 



Table of species, based on the chrysalis. 



Head and most of the wings fuscous, in strong contrast to the yellowisb abdomen... seniide?. 



Head amber and most of the wings light green, in no great contrast to the yellowish green 



abdomen jutta. 



Table of species, based on the imago. 



Upper surface of wings with no ocellate spots semidea . 



Upper surface of wings with ocellate spots j utta. 



OENEIS SEMIDEA.— The White Mountain butterfly. 



[The mountain butterfly (Harris) ; the White Mountain butterfly (Sen 1 ler) ; brown mountain 



butterfly (Maynard).] 



Hipparchia semidea Siy, Anier. cntoni., C/itV)?io&as semirfea Edw., Morr., Syn.Lep. 



iii, pi. 50 (1828); Enton. N. Amer., ed. Le N. Amer., 351 (18(i2);— Scudd., Bost. journ. 



Conte, i: 113-114, pi. 50 (1859) ;—narr.. Ins. nat. hist., vii: 621-G2G, pi. U, figs. 2-8 (1803); 



inj.veg.,31. ed.,304, fig. 120 (1802). Proc. entom. soc. Philad., v: 20-25, fig 



