LYCAKNINAK: IXCIS.VLIA Ml'IlOX. 



831 



Beyond this the wins is ilark ciiuianioii 1'1'<iavii. oliscnroil by imtty birjii'. trinnsiilar 

 pntclies of loosely orowdi'd, wliitc, iriilosccnt scales*, one patch between each inter- 

 space, incivasing in size toward the outer aiifile of the winjr. tlie scales most loosely 

 crowileil at the base of the triansles, which are seated on the cinnamon line forming 

 the border; above each of these triangles, but slightly separated from them, is sit- 

 uated a ^)w of delicate tlnslies of pale ro.seate scales, occasionally obsolete; cinnamon 

 border interrupted with black on either side of the nervnre tips ; wing covered also 

 ■with long, scattered, exceedingly delicate hairs, white or fulvous, according to the 

 color of tlieir point of origin; fringe niucli as on the upper surface, but more varie- 

 gated and brighter. 



.Vbdomen covered witli niinglod slate brown and gray l)rown scales, beneath witli a 

 few short silvery gray hairs. Upper edge of alations of male upper organ (34 : 21) a 

 little more roundly produced next the bottom of the notch than in I. augnstus ; so too 

 the outer posterior lobe is slightly larger and less pointed ; clasps tapering very reg- 

 ularlv throughout. 



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

 fore wings. Tlie scales from the stigma (46: 2G) are stouter than in the other species 

 of the genus, being but little more than three times as long as broad with slight basal 

 lobes, a well rouudeil apex .and scarcely convex sides, equal in the middle third. 



Egg (65:7). Completely studded with blunt conical tubercles .017-.023 mm. high 

 and of about the same diameter at their base, connected by coarse ridges of nearly 

 equal elevation and averaging .0075 mm. broad, so as to form in the interspaces rude 

 triangular pits, whose longer diameter is .038 mm. and the shorter .025 mm. ; the 

 widtli of the rude hexagon of which each prominence is the centre is about .08 mm. 

 in diameter; tlie surface of the tubercle is crowded with transverse wrinkles; the sur- 

 face of the pits has the peculiar appearance of frosted glass. Micropyle rosette 

 (68:7) .13 mm. in diameter, sculptured with minute raised lines dividing the floor 

 into broadly ovoid cells, the longer diameter of which is about .017 mm. ; the central 

 cell, which is .0085 mm. in diameter, is surrounded by only three or four of the oval 

 cells, the longer (instead of, as elsewhere, the shorter) diameters of which are 

 directed toward the centre. Color not very pale green, the reticulation white. Height, 

 .38 ram. ; breadth, .78 mm. 



This egg diflers from that of I. irus not only in size but also in the much lesser 

 regularity of the markings, in the rugosity of the surface of the cells, in having the 

 walls of the cells low, broad, heavy and wrinkled, instead of high, abrupt, compar- 

 atively slender and nearly smooth. 



Caterpillar. First stage. Head yellowish brown; ocelli pale in a black field. 

 Body pale greenish, marked with yellowish brown, especially in curving patches on 

 the sides and a lunate spot on the dorsum of each segment ; bristles colorless ; spira- 

 cles blackish; warts pellucid. Length of dorsal hairs, .35 mm. ; breadth of dorsal 

 hairs, .01 mm. ; length of short lateral hairs, .064 ram. ; breadth of space between 

 laterodorsal row of hairs, .1 mm.; length of long lateral hairs, .15 mm.; length of 

 dorsal wart-i, .042 mm.; length of body, 1.85 mm.; height, .24mm.; breadth, .32 

 mm. ; bre.idth of head, .32 mm. 



Last std'je (75:24). Head yellowish. Body pure transparent green, with four 

 longitudinal white stripes and on the first thoracic segment a transverse lozenge 

 shaped white patch. Segments somewhat elevated in the middle of their diameter 



♦In one instance I have found them luteo-ochraocou.«. 





