146 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxi. 



This is the smallest species of the series, and as compared with the 

 others the wings are a little more triangular and broader for their 

 length. It is also the palest species, and, as a rule, the median space 

 is much the palest part of the wing; the basal space being darker, 

 and the dark shadings along the the transverse posterior line obscur- 

 ing that part of the wing. The variation is all in the direction of suf- 

 fusion, and I have seen examples that are dark greenish smoky, with 

 the ordinary lines and spots of the usual whitish gray color, and, there- 

 fore, strongly constrasting. While the sexual characters are on the 

 whole referable to this group, there is a distinct tendency toward 

 structures like that found in noctivaya in the next group. The clasper 

 is more hook-like and evenly developed than in the other species referred 

 here. In other respects the structural characters correspond to those 

 with which the species is associated. 



LARVA. 



Stage II. — Head bilobed; width, 0.4 mm. Larva all whitish, no 

 marks; warts coucolorous. Several hairs from each wart alike, not in 

 a crown of shorter ones; stitt" and not long except from joint L*; white, 

 some of the dorsal ones dark. 



Stage III. — Resting with the head turned on one side on the under- 

 side of the leaf. Head bilobed, high, pale yellowish, dotted with a 

 more opaque color; width, 0.7 mm. Body greenish, paler subventrally ; 

 warts round, knob-like, I to III, large, pale yellow; IV to VI, small, 

 greenisli. Hairs few, coarse, white; some of the dorsal ones blackish. 

 Segments slightly annulate, faintly coucolorously streaked trans- 

 versely; a broken white dorsal line. 



Stage IV. — Head pale brown, mottled on the vertex; width, 1.2 mm. 

 Body with a vinous brown streak below warts I and II, reaching wart 

 III. Segments folded, annulate, more whitish on the folds. Warts I 

 to 111 reddish. A white dorsal line; hairs pale. 



Stage V. — Resting on the upper side of the leaf. Head slightly 

 bilobed, whitish, mottled with brown dots; width, 1.8 mm. Body 

 whitish, with four wine-red transverse stripes on each segment, cross- 

 ing the dorsum to wart III, distinct between warts II and III, faint 

 dorsally, the second stripe converted into a double rounded spot 

 between the warts of row I. Warts I to III, pale orange, the rest cou- 

 colorous with the body; wart II smaller than I, IV and V small. Hair 

 rather long, except from warts I and II, where they are shorter and 

 dark. 



Stage VI. — Head whitish, mottled with pale brown, a row of darker 

 dots close to the sutures of clypeus and median suture; width, 2.5 mm. 

 Dorsum to the spiracles shaded with purplish and containing the trans 

 verse bands, lateial region, venter and feet yellowish waxen white. 

 Dorsal segments with five dark vinous red bands, reaching wart III. 

 First nearly cut dorsally and not reaching so far down the sides as the 



