880 Till-: HL TTERFLIKS OF NEW ENGLAND. 



ance ; on the fore wings tliis is conspicuous only in the iliscal cell, between the discal 

 spot and the mesial l)and. between the mesial baud audtlic submarginal row of streaks, 

 and, continuous with the latter, a curving streak, which follows, nearly to the base, 

 the submedian nervure; the whole of the hind wings below the subcostal nervure, 

 and, basally, below the costal nervure, inside the orange luuules, and excepting the 

 extra-mesial band, is sufl'used with white, merging into brown toward the base of the 

 wing. Tlie white edging to the black margin of both w-iugs is altogether wanting; the 

 submarginal markings, excepting the edging just mentioned, and the orange lunules 

 seated on black spots on the hind wings, are entii-ely absent and the general color 

 of the dark parts more nearly approaches the color of the upper surface that is 

 normal. 



Secondary sexual peculiarities. For the male stigma see the description of the 

 fore wing. The scales (46 : 18) which .stand erect upon it hardly dift'er from those of 

 T. calanus except in being strongly lobed at the base. They are a little more than 

 three times as long as broad, with straight or scarcely convex sides, nearly equal 

 throughout and as broad apieally as basally. 



Egg (65 : 17). Slightly flattened below, very broadly rounded above, pellucid white 

 when empty, bristling all over with regularly tapering, slightly arcuate, almost acic- 

 ular, bluntly pointed filaments, which arise from the angles of the cells, and on the sides 

 nearly twice as long as the diameter of the cells. Cells polygonal, .018-.025 mm. in 

 average diameter, bounded by walls which are quite as high or even twice as high as 

 thick, perpendicular; above, the cells are smaller and the filaments shorter; the floor 

 of the cells shows four or five thickened points. Filaments, .025-.03-1 mm. long and 

 nearly or quite .005 mm. in diameter at base. Height of egg, .43 ram. ; breadth exclu- 

 sive of filaments, .65 mm. 



Caterpillar. First stage (71:2). Head fusco-castaneous, deepening to black below ; 

 labrum and antennae pale ; mandibles castaneous ; ocelli black. Body pale green, above 

 more or less pallid, uniformly besprinkled with black points. Posterior hairs of the 

 laterodorsal row only half as long as those in front. 



Third stage. Head green, edged in front with black, labrum green, mandibles roseo- 

 castaneous ; antennae pale green ; ocelli black. Body pale grass green with slightly 

 darker green dorsal line and oblique lateral stripes. Corneous disk of first thoracic 

 segment transversely and irregularly diamond shaped; substigmatal fold pale; hairs 

 pale fusco-roseate. Spiracles white ; legs pale green, the claws castaneous. 



Last stage (75 : 27, 32). Head (79 : 26) very pale greenish testaceous, with a rather 

 broad transverse black belt from behind the ocellar area, crossing the frontal triangle 

 just above the lower edge but broken at the edges of the triangle by the pale suture; 

 ocelli and second joint of antennae of the color of the head ; first joint of antennae 

 and cardo white ; labrum and mouth parts testaceous. 



Body grass green, the lateral portions a little paler and with slight indications of 

 paler, greenish yellow, slender, oblique stripes on the sides, besides some pale almost 

 imperceptible mottlings above, more or less connected with the oblique stripes, and 

 settiug oft" a slightly darker dorsal line, which is most intense and distinctly margined 

 with pale on the terminal segments. There is also a very faint and narrow substig- 

 matal band, and on the first thoracic segment a dull brown, rhombic, dorsal shield with 

 its posterior angle produced. The whole body is covered with spiculiferous, erect 

 liairs, roseate brownish above, colorless below, most of which are short but have a 

 tendency to be longer and slightly curved along the outer margin of the dorsal region, 

 especially in front. They are seated on scarcely perceptible papillae, microscopically 

 stellate by what are apparently thin clefts, six in number, radiating from the hair and 

 covering an area .04 mm. in diameter. Spiracles pale testaceous, edged with a narrow 

 testaceous rim. The skin has a shagreened appearance, with closely crowded sliallow 

 punctuations less than .01 mm. in diameter. Legs and prolegs (86 : 27) of the color 

 of the body, the latter apparently trilobed, the claws testaceous. Length, .12 mm.; 

 breadth, 3.5 mm. : height. 3 ram. ; length of longer hairs, .3-.4 mm. ; of shorter hairs, 

 .15 mm. 



