1664 



THE BUTTERFLIES OF NEW ENGLAND. 



a little above the upper border and its edge forming the posterior border of tlie clasp; 

 upper posterior angle of clasj) slightly produced, a little incurved and bearing at its 

 extremity a fine upturned tliorn, lyiag beside the extremity of the lower process. 



Measurements in millimetres. 

 Length of tongue, 12.2 mm. 



Length of fore wing 



antennae , 



hind tibiae and tarsi. , 

 fore tibiae and tarsi . . , 



Described from 8 3 , 12 9 . 



Accessory sexual peculiarities. The discal stigma of the male has been described 

 under the wings ; the scales contained in it consist of jointed threads, the joints (49 : 3 d) 

 short, strongly fusiform in the heart of the stigma, accompanied, at least in the 

 basal patch, lay some spatulate scales of peculiar form, either very largo with a large 

 spatula developed from a broad shank (3 c), or of long, feebly spatulate rods (3 g) ; 

 guarding these androconia are found at the extreme base two-pronged rods of very vary- 

 ing lengths (3 f , k) , accompanied above by large, very elongated, ova! scales with entire 

 margins, with converging waved reflections at tip (3 a), and along the upper edge two - 

 pronged and three-pronged, slender, rod-like scales, enlarging rapidly though not 

 greatly at their base (3 b, h) ; in the field below the stigma are found some scales of 

 very peculiar form (3 e) ; they are large, equal and rather slender in the basal two-thirds, 

 suddenly expanded into a fan-shape apically, the outer margin strongly convex and 

 deeply waved. In the vitreous spot of the lower median interspace of the female are 

 found some rounded subquadrangular scales with waved reflections and entire margins 

 (3i). 



Egg (66: 31;. The cells of the reticulation quadrangular, half as broad again as 

 long on thelmsal half of the egg, above which they are at first of about equal height and 

 breadth and irregularly pentagonal, afterward, and soon above the middle, higher than 

 broad ; at the base the cells are about .042 mm. in length, in the middle about .03 mm. ; at 

 the summit where the longer axis is vertical it is of about the same length; themicropyle 

 (69 : 11) consists of a collection of radiately arranged minute cells, together forming a 

 cluster only .042 mm. in diameter, immediately surrounded by pentagonal cells scarcely 

 smaller than those at some distance from the micropyle. Diameter, .9 mm.; height, 

 .56 mm. 



Caterpillar. First stage (77:28). Head (80 : 68) blackish castaueous, the sutures 

 black; ocelli pellucid in a dusky field, darkest inferiorly ; mouth parts generally infus- 

 cated; dorsal thoracic shield dark castaneous, edged with blaoJi on all sides. Body 

 pallid, with a tinge of greenish, the bristles pellucid; first pair of thoracic legs 

 blackish fuscous, the others concolorous with the body; the claws and tips of the last 

 joint blackish; prolegs concolorous. Length, 2 mm.; breadth of body, .4 mm.; of 

 head, .5 mm. Described from specimens in glycerine. 



Second stage. Head (80:69) piceous, finely punctate; all mouth parts blackish fus- 

 cous. Body very pale yellowish green ; dorsal thoracic shield piceous, the transverse 

 furrow testaceous ; papillae and their very short bristles blackish fuscous, not very 

 numerous. Length, 4.5 mm. ; breadth of Ijody, .8 mm. ; of head, 1 mm. Described 

 from specimens preserved in glycerine. 



Third stage (77 : 30). Head piceous, with a faint greenish tinge, rather profusely 

 and distinctly punctate ; dorsal thoracic shield blackish fuliginous, the transverse fur- 

 row blackish; first pair of thoracic legs blackish fuscous, other pairs fuliginous; pro- 

 legs concolorous with the body; body as in preceding stage. Length, 8 mm. ; breadth 

 of body, 1.5 mm.; of head, 1.5 mm. Described from specimens preserved in 

 glycerine. 



Fourth stage. Head (80 : 70) black, the base between the ocelli and maudil)les with 

 a luteous cloud ; the surface deeply punctate, the punctae more or less run together in 

 rudely vertical lines ; dorsal thoracic shield blackish fuscous ; the segment in front of 



