26S LEPIDOPTEBA. 



rich velvety green, with a yellowish tinge, slightly paler be- 

 tween the segments, and a dorsal stripe of a darker shade, 

 centred along the middle segments with a faint, j-ellowish 

 line. The anterior edge of the second segment is yellowish 

 brown, with a few dots of a darker color. The body is thickly 

 covered with minute hairs which are brown above and white 

 below, being scarcely visible to the naked eye. The body is 

 flattened above (dorsal crest not bordered with yellow as in T. 

 Acadica), steeply sloped at the sides, where it is striped with 

 faint oblique lines of ^yellowish, two or three on each segment. 

 The two last segments have a patch of yellowish on each side? 

 making the dark dorsal line appear much more prominent. A 

 faint yellowish line close to the under surface from the fifth to 

 the terminal segments. The under surface is bluish green, 

 with a darker patch on the last two segments. 



" The chrysalis changed June 19th, and is nearly oval in form. 

 The head-case is rounded, and the body is dark reddish brown, 

 with black markings thickly covered with fine, short, whitish 

 hairs, rather more numerous on the anterior and posterior 

 segments. Anterior segments with many thickly set patches 

 of blackish, and a dark ventral line from the sixth to the 

 twelfth segments. It is bound by a few silken threads on 

 the anterior portion of the seventh segment." 



The accompanying cut (Fig. 1!)7) represents the pupa of a 

 Thecla, found in July by Mr. Sanborn, on the Glen road to 

 Mount AVashington. The body is smooth and tapers gradually 

 from the mesothorax, and the venation of the wings is 

 very apparent. Another pupa, probably T. niplion, found 

 by Mr. Stillborn, is very different, being much stouter, 

 and thicker through the abdomen, by a third of its 

 19 '' diameter, than the chrysalis figured. It is rough and 

 covered with short, fine, stiff hairs ; the tegument is so thick, 

 that there are no traces of the veins of the wing, while the 

 sutures between the segments and the appendages are not 

 nearly as distinct. The larva, according to Mr. Sanborn's 

 notes, was found feeding upon the A\ r hite Pine, July loth. 

 k> lt was .45 of an inch long; the head was retracted, yellow- 

 ish, and the body pale, transparent green, with four longi- 

 tudinal, white stripes, and one transverse, lozenge-shaped 



