352 



PSYCHE. 



[November 1S93. 



centrally. Feet pale, purplish tinged out- 

 wardly; horn reddish. Later the spiracles 

 are surrounded by whitish, outside which is 

 a faint purplish space, which on joint 3 

 extends over the dorsum. Horn o.S mm. 

 long. At the end of the stage, the purplish 

 shading overspreads the whole lateral region, 

 but is sharply defined above subdorsallv, 

 leaving the dorsum broadlj' green. Joint 2 is 

 all green, as is the venter between the legs. 

 A faint line reaches straight up from the 

 spiracle on joint 12 to the horn. 



Fourth stage. — Head shaped as before, 

 yellowish green, slightly mottled with brown 

 on the sides of the front; ocelli brown, jaws 

 brownish, antennae reddish, labrum whitish; 

 width 2.4 mm. Body slender, joint 12 en- 

 larged, with a thick, conical, fleshy horn 

 from a very large base, rounded at the tip, 

 pointing straight up and bearing two minute 

 divergent setae; length about 1 mm. The 

 setae on the body arise from small, con- 

 colorous, rounded, shining warts, row 3 

 • rather conspicuous, the rest minute. Dorsum 

 broadly bright green, except on joints 2 and 

 3, where it is shaded with purplish brown in 

 a dorsal line extending over joint 3 laterally. 

 Lateral region, subdorsal to substigmatal. 

 shaded with purplish, bordered below by a 

 heavier shade and emphasized on the bases 

 of all the feet, except the anal, by a nearly 

 black shade. Feet purplish; venter green; 

 horn purplish brown with a line running 

 down to the spiracle. Spiracles black, white 

 centrally and surrounded by a broad white 

 ring, except the one on joint 2. Anal plate 

 large, green, but quite smooth and incon- 

 spicuous. Later, a livid purplish tint spreads 

 slightly over the body, and there is less 

 contrast between the dorsal and lateral 

 regions. The horn is 2 mm. long, and is 

 colored livid purplish with a dark purple 

 brown stripe down the side, running behind 

 the spiracle. 



Fifth stage. — Head shaped as before; 

 green, but covered with a brown shade 

 except over the clypeus and a space immedi- 



ately around it, densely mottled with green 

 spots; jaws brownish, ocelli minute, black, 

 labrum pale; width 3.9 mm. Body smooth, 

 setae very minute, joint 12 much enlarged, 

 the horn very well developed, becoming 3 

 mm. long and thick at base; anal plate large, 

 nearly circular, excavated anteriorly, coarsely 

 granular with a knob-like prominence in 

 the center. Body at first nearly green, but 

 overspread with a livid purplish shade, a 

 band over joint 3, lines on the feet on joints 

 7-10 and a stripe from vertex of horn to sub- 

 ventral region purplish black. Bases of horn 

 before and behind the black stripe, pinkish. 

 Anal plate green with reddish border. 

 Thoracic feet reddish. Spiracles white in a 

 narrow black border, surrounded by white 

 and outside this by a purplish black ring. 

 Abdominal feet red each side of the black 

 line. As the stage advances, the head and 

 body become shining, light, livid, greenish 

 purple, marked as before; venter centrally 

 green ; anal plate entirely reddish, deep red 

 on the circumference. The black stripes 

 become paler, the spiracles entirely black 

 inside of their white border. Still later a 

 diffuse, but evident, ocher yellow substig- 

 matal line appears, ending abruptly on the 

 lower side in a greenish shade, reaching up 

 above half-way on the spiracles. The purple 

 color of the body is very pale and becomes 

 more and more livid and greenish. Length 

 of larva 50 mm. 



Cocoon. — The larva went just beneath the 

 surface of the ground and formed a cell lined 

 with silk. 



Pupa. — ■ Cylindrical, rounded at both ends, 

 thickest through the 4th abdominal segment. 

 Cases comparatively small, wrinkled ; cre- 

 master, two short thick spines, some distance 

 apart which point outwardly at an angle 

 from the body. Color very dark brown, 

 black on the cases and the back. Length 21 

 mm. ; width 7 mm. 



Food plant. — Willow (SalixV 



Larvae from Portland, Oregon. 



The moths differ from Pheosia dimidiata 



