190 Psyche [December 



very fine ribbing; niicropylar area a rosette of minute cells. Width, 1.5 mm. 

 Height, .8 mm. 



Stage I. Head flat, black; body blue-gray; a dark dorsal line; a lateral band 

 paler than the groimd color, bordered on each side by a fine dark line and containing 

 a similar central line; two further dark subspiracular lines; on abdominal segments 

 I-IV small round deep brown patches laterally; primary tubercles black, prom- 

 inent especially those situated ventrad to the pale lateral stripe, each with a long 

 black seta Beneath pale gray with central dark blotches. Length, 6 mm. 

 Width of head, .5 mm. 



Stage II. Head whitish, strongly marbled with black, with two black lines in 

 front, bending away from each other as they approach apex of cheeks, a central 

 dark line in clypeus and a curved line around lateral portion of the cheeks; body 

 gray with dark brown dorsal line irregularly bordered with whitish, this color tend- 

 ing to spread out into diamond-shaped patches towards rear of each segment and 

 defined outwardly by a blackish line; lateral whitish band as before with dark 

 borders and central line; below this a black line on a level with tubercle IV; a 5th 

 subspiracular line bordered dorsally with whitish; dark blotches on abdominal 

 segments 1-4 as in previous stage; tubercles large, black, increasing in size towards 

 posterior end; prolegs with a strong black chitinous lateral plate. Beneath whitish 

 with dark central blotches. Length, 12 mm. 



Stage III. Head as in previous stage; on the body the light stripes of the 

 previous stage have so broadened that the general groimd color appears light gray 

 slightly mottled with flesh color, the darker portion being confined to a subdorsal 

 irregular band and a similar lateral band in the region of tubercle HI; a light gray, 

 very irregular dorsal band defined outwardly by black lines and broadening into 

 diamond patches at the rear of each segment with a dark centro-dorsal line; the 

 subdorsal dark areas are more or less shaded with gray anterior to tubercle II; 

 lateral gray area and dark lines as before; ventrad to this is the lateral dark area on 

 a level with tubercle IV, paler on thoracic segments, with mere traces of dark lateral 

 patches of previous stages, bounded ventrally by dark line; the light area ventrad 

 to this contains two dark lin^s, the lower forming the outer margin; dorsal tubercles 

 conical, shaded black and white, especially large on 8th abdominal segment; a 

 small transverse dark wart dorsally on 5th abdominal segment. Beneath whitish 

 with black central patches. Length, 18 mm. 



Stage IV. Head gray strongly striate with black; a black upright dash in central 

 front portion of cheek and a broad curved lateral line of same color; body pale 

 gray, marbled, rough and tubercular in appearance; markings essentially as in pre- 

 ceding stage; the pale gray dorsal stripe with diamond-shaped enlargements is 

 usually quite prominent owing to its being bordered by a darker gray subdorsal 

 stripe, deepest in color on the 1st, 2nd and 5th abdominal segments; dark supras- 

 piracular stripe distinct, paler in anterior portion and on 4th abdominal segment; 

 dorsal tubercles pale, ochreous, raised, with more or less of a transverse ridge 

 between the two tubercles II, especially marked on 1st, 2nd, 5th and 8th ab- 

 dominal segments; on 5th abdominal segment a small dark transverse dorsal wart, 

 shaded posteriorly with blackish; tubercle II on 8th abdominal segment large and 

 conical; tubercle IV situated on a rather raised wart just behind spiracle; below 



