IIKSI'KRIUI ; KLDA.MUS TKOTEUS. 



1389 



The Icnirth of sulimedian nerviire of hind wing varies from 2G-32 mm. (J), 25.2-33 mm. (9). 



Described from lOi.Vi ? . 



Accessory sexual peculiarities. The costal fold of the fore wing of the male is 

 mostly tilled with wluit arc apparenlly silken hairs, but in reality chain-bristles composed 

 of from six to nine, usually eiitlit, subeiiual links, each about .02 ram. long, and the last 

 ttagellate at tip i^47 : la) ; besides there arc in scanty numbers U\o sorts of androconia, 

 showing only a granular structure; one is a slender lanceolate, apically sagittate scale, 

 about .10 mm. long (47: lb) and so not much, if any, shorter than one of the chain- 

 bristles ; the other a nearly equal obo v.-ite scale (47 : Ic) not twice as long as one of the 

 links of the chain-bristle. These are the better concealed for the broad striate cover- 

 scales (47 : Id) which ordinarily close the opening. 



Egg (66:6). Apparently considerably broader than high. Vertical ribs eleven or 

 twelve in number, at an average greatest distance apart of .22 mm., approaching each 

 other much more closely at their termination at the edge of the micropylic basin, 

 which is nearly .4 mm. in diameter; cross lines apparently at equal distances apart, 

 whether the ribs are closely approximate or distant: in the upper part of the egg 

 (where only they are distinct) about .025 mm. apart; surface of the egg showing the 

 finest possible punctuations with a half-inch lens. Color light yellow (Wittfeld). 

 Width of egg, .9 mm. ; height, .8 mm. Described from specimens mounted in 

 glyceriue. 



Caterpillatr. First stage. Head black, sometimes blackish brown, the sutures and 

 posterior edge of the collar black ; bristles pellucid ; mouth parts castaneous ; the 

 spinneret Inteous. Dorsal shield of the tirst thoracic segment of the color of the 

 head, as are also the legs of the same segment. Kest of the body uniform pale yel- 

 low, the bristles pellucid; prolegs concolorous, the second and third thoracic legs 

 scarcely darker ; spiracles marked by a fuscous ring. Length, 2 mm. ; breadth, .32 

 mm. ; breadth of head, .6 mm. Described from specimens in glycerine. 



Second stage. Head black, with a brownish tinge and yellowish black pile; the sum- 

 mit of the hemispheres with some minute raised conical points; dorsal thoracic shield 

 of the color of the head. The body uniform yellowish green, with pale, dusky hairs 

 on scarcely infuscated minute papillae. Legs and prolegs as before. Length, 4 mm. ; 

 breadth, about .5 mm. ; breadth of head, 1 mm. Described from specimens mounted 

 in glycerine. 



Third stage. Head black, with a faint, small, reddish spot next the lower outer 

 corner of the frontal triangle ; summit of each hemisphere with a distinct cluster of 

 dentiform tubercles. First thoracic segment with dorsal shield scarcely so dark as 

 the head, with a reddish tinge, broken narrowly at the dorsal line. Body uniform yel- 

 lowish green, the fuscous hairs giving it a slightly begrimed appearance. Logs and 

 prolegs as before. Length, 10 mm.; breadth. l..i mm.; breadth of head, 1.7mm. 

 Described from specimens in glycerine. 



Fourth stage. Head (80:11) piceous, obscured by fine granulations, which are 

 interrupted by finely impressed, vertical striae, converging toward the mouth parts; 

 triangle with a distinct but slight median carina in continuation of the vertical suture 

 above; a bright orange, quadrate, angular spot occupying the space between the ocelli 

 and the frontal triangle, angularly produced next the upper limit of the ocelli ; sum- 

 mit of either hemisphere posteriorly with an open cluster of a dozen denticulate 

 tubercles curving fonvard ; month parts blackish ; the basal joint of the antennae and 

 the extreme base of the third joint pallid. First thoracic segment with a smooth, 

 piceous. dorsal shield, finely broken at the dorsal line and with a triangular fragment 



