IMKRINAK: XANTHIDIA NICIPPK. 1069 



Variations. Boll Miys that he has iiotcil iliiiiorphisin in tlii.s species but does not 

 indicate its nature. Strecker briefly described an aberration ki.ava, commoner in the 

 female than in tlie male, as "citron yellow without any traces of oranire." Edwards, 

 however, says : "I have taken males of all grades up to clear sulphur yellow, with no 

 trace of orange; the females also are often nearly yellow but I have seen none which 

 had not a little orange in the disks." 



Accessory sexual peculiarities. In the male the black bordering band of the 

 wings is sharply dellned and extends across the entire outer margin. In the female, 

 on the other hand, the band is blurred and stops abruptly before it reaches the 

 lower angle of the fore wings, or has h.alf traversed the hind wings. But besides 

 these marked difi'erences the males have on the middle median nervure of the same 

 surface of the fore wings, many androconia (46 : 36) having a very graceful, rounded, 

 triangular form, very elongated, largest just before the very well rounded apex, 

 coarsely striate as in Callidryas eubule. and nearly four times as long as broad. 



Egg (65:31). With about tliirty very slightly elevated but sharp vertical ribs in 

 the middle of the egg and less than half that number at either end, about .03 mm. 

 apart in the middle of the egg, the cross lines not at all sharply defined nor very 

 straight, about .01 mm. apart, forming thus quadrangular cells, about three times as 

 broad as high, the surface of which is pitted with comparatively large, shallow, oval 

 cells, their longer axis parallel to the vertical ribs, three or four only in each cell and 

 occupying the greater part of it. "Color when first laid, greenish yellow ; after a few 

 hours turning to red" (Edwards). Height of egg, 1.5 mm. ; width at summit, .12 

 mm. : at middle, .42 mm. ; at base, .17 mm. 



Caterpillar. First stage. Head obovoid, greenish white. Body whitish, semi- 

 translucent, a few whitish clubbed appendages scattered about each segment. Legs 

 and prolegs of the color of the body. Length. 2.5 mm. (After Edwards.) 



Second stage. Head subglobose, finely tuberculated, and somewhat pilose, yellow 

 green. Body deep green, "dorsum, the sides and lower parts lighter"; clubbed bris- 

 tles white; hairs white or black. Length. 4 mm. (After Edwards.) 



Third stage. Head as before of a lighter green than the body, which is wholly deep 

 green. Length, 5.1 mm. (After Edwards.) 



Fourth stage. A specimen which is moulting differs from the last stage in wanting 

 all the blue markings and in that the stigmatal stripe is not so broad, and pallid instead 

 of yellow, the same pallor spreading over the whole upper surface. especiiiUy of the 

 abdominal segments ; the papillae are concolorous or only of a darker green and they 

 have no conical appendages ; that is, they are uniformly rounded and not apically ele- 

 vated and angular. Length, 14 mm. 



Last stage (76: 6). Head (79: 68) nearly uniform pea green, with inconspicuous, 

 delicate, vermiculate markings of a slightly darker green, the papillae black ; mouth parts 

 and antennae pale greenish yellow, a little fuscous, especially along lower edge of 

 labrum and edge of mandibles; ocelli black. 



Body below of the same green as the head, above very dark green; the papillae 

 black, bluish at extreme base and surrounded by a slight annulus of paler green; a 

 stigmatal band of yellow, nearly twice as broad as the length of the spiracles, extends 

 the whole length of the body, its lower edge passing near the lower edge of the spi- 

 racles; for more than an equal space above this the side of the body is marked on the 

 middle of each subdivision of the segments with transverse rounded bars of blue 

 enclosing several papillae, the bases of which are generally connected by a blackish 

 area. There is also a trace of blue below the yellow stigmatal line in the middle of 

 the segments. Legs concolorous with under surface of body, inclining to yellow 

 toward the tips; prolegs concolorous or slightly tinged with yellow, the hairs upon 

 them colorless. Spiracles chalky white. Length. 25 mm. ; breadth of body, 3.5 mm. ; 

 of head, 2.3 mm. 



Chrysalis (84: 51, 52). Dull, hoary green, caused by the structure of thesurface, 

 which is delicately corrugated, the raised parts being white and the sunken portions 

 green. The wings are slighty darker than the rest of the body and are often specked or 



