EXPLANATION OF PLATES. 



OPPOSITE PAGE 



Plate 1. — Basilarchia arthemis 32 



Fig. 1, Egg magnified ; Fig. 2, A spray of willow with 

 caterpillars of different ages feeding upon it, two of the 

 youngest on their perches on a detached leaf. The egg, 

 of natural size, is shown at a, a bunch of riffraff at b, 

 and the hibernaculum at c. Fig. 3, Chrysalis. 

 The butterfly is shown on the next plate. 



Plate 2. — Butterflies of the White Mountains . . 80 

 Fig. l,Pieris oleracea. Fig. 2, Basilarchia arthemis. Fig. 

 3, Polygonia faunus. 

 Plate 3. — Nests of Butterfly Caterpillars .... 104 

 Fig. 1, Nest of Thanaos juvenalis on scrub-oak. Fig. 2, 

 Nest of young Thanaos persius on poplar. Figs. 3~ 



5, Nests of Euphoeades troilus at successive stages of 

 growth on spice-bush. Fig. 6, Nest of Epargyreus tity- 

 rus on Gleditschia. Fig. 7, Nest of Aglais milberti, 

 when full grown, on nettle. Fig. 8, Nest of Vanessa 

 huntera on Gnaphalium, formed of the petals entangled 

 in web. 



Plate 4. — Eggs of Butterflies 116 



Fig. 1, Pontia protodice. Fig. 2, Pholisora catuUus. Fig. 

 3, Bunch of eggs of Laertias philenor on a tendril of 

 Aristoloehia. Fig. 4, Inverted column of eggs of Po- 

 lygonia interrogationis. Fig. 5, Epargyreus tityrus. Fig. 



6, Cereyonis nephele. Fig. 7, Speyeria idalia. Fig. 8, 

 Anthocharis genutia. Fig. 9, Brenthis myrina. Fig. 10, 

 Anosia plexippus. Fig. 11, Erora laeta. Fig. 12, Eury- 

 mus philodice. Fig. 13, Rusticus scudderi. Fig. 14, 

 Strymon titus. 



All the illustrations are magnified, excepting Fig. 3, which is slightly reduced. 



