December 1S91] 



PSYCHE. 



195 



part of the stage the body is greenish white, 

 the dots distinct and black. 



Second stage. Head large, slightly bilobed, 

 narrowing to the vertex, flattened in front; 

 shining straw yellow, brown on the vertices 

 of the lobes; month parts whitish; ocelli 

 black; width 1.1 mm. Body slightly en- 

 larged at joint 12 with a dorsal rounded 

 conical process bearing two divergent setae; 

 otherwise slender. Pale whitish green, the 

 horn dark red brown, not shiny; a faint stig- 

 matal yellowish band, bordered below by an 

 interrupted dark red band. Thoracic feet 

 black, the bases of the four anterior pair of 

 abdominal feet black outwardly. The pilif- 

 erous dots are absent, but the setae remain 

 rather short, fine, blackish. The cervical 

 shield is absent and the anal plate obscure. 



Third stage. Head rounded, pale green, 

 not shiny ; mouth, antennae and ocelli brown- 

 ish ; a few short blackish hairs; width 1.7 

 mm. Body cylindrical, with a slight sub- 

 ventral ridge; joint 12 enlarged dorsally and 

 continued into a process like a tapering horn, 

 pointing straight upward, nearly 1 mm. 

 long. Cervical shield and anal plate not dis- 

 tinct, concolorous with the body. Bodv 

 whitish green, not shiny; an obscure yel- 

 lowish stigmatal shade, below which is a 

 dark red subventral band, somewhat inter- 

 rupted ; feet all dark red. The process on 

 joint 12 is rounded at the tip and bears two 

 minute divergent black setae. Similar setae 

 arise from the obsolete piliferous dots. Spir- 

 acles brown, whitish centrally. The seg- 

 ments are faintly transversely creased. 



Fourth stage. Head large, flattened in 

 front, very slightly bilobed and uniform yel- 

 lowish green in color; width 2.4 mm. Bodv 

 cylindrical, slender, enlarged dorsally at 

 joint 12 and bearing a conical nutant process, 

 1 mm. long, which bears two small divergent 

 setae before the tip. The other setae on the 

 body are also very minute. Color yellowish 

 green ; a substigmatal yellowish band and 

 below it a dark red one, staining the bases of 

 the legs. Thoracic feet dark red, the anal 



feet green. Spiracles large, white, narrowly 

 ringed with black. The horn is red. As the 

 stage advances the body becomes tinged 

 with purplish except on the sides of joint 2. 

 The spiracles are broadly surrounded by 

 white. 



Fifth stage. Head large, rounded, flat- 

 tened in front, smooth, shiny pea green 

 with a faint brownish tinge and obscurely 

 mottled with little yellowish spots; mouth 

 parts brownish ; width 3.8 mm. Body long, 

 slender at first, joint 12 produced upwards 

 into a long conical horn, very thick at base. 

 Anal plate large, nearly circular, but slightly 

 excavated anteriorly with a knob-like eleva- 

 tion in the center and coarsely granulated. 

 The body is at first green with a strong 

 brownish purple tinge, especially in the 

 middle of the segments; joint 2 clear green 

 anteriorly. On each joint centrally a black- 

 ish purple transverse shade band, absent on 

 joints 2, 5, and 11, complete on joint 3, ting- 

 ing the bases of the legs on joint 4, most dis- 

 tinct on the bases of the legs on joints 7-10 

 and on joint 12 running posteriorly to the 

 spiracle and broadly to the vertex of the horn 

 which is pinkish posteriorly. Anal plate 

 green, with a broad red-brown border. 

 Spiracles large, black, surrounded with 

 white and outside this by a purplish shade, 

 the pair on joint 2 pale with a black border. 

 A broad medio-ventral pale green band. 

 Thoracic feet red-brown. 



As the stage advances, the entire head and 

 body become very shiny light purple, except 

 the thoracic feet which are red and the anal 

 plate which is colored as before. The black- 

 ish bands and ventral band remain as does 

 also the coloration of the spiracles. There 

 are no setae distinguishable except on the 

 anal feet, but very slight ones can be made 

 out with a lens in certain places. There are 

 two orange spots on the feet on joints 7-10, 

 separated by a black line; the anal feet are 

 orange centrally. Some examples almost 

 entirely lack the black bands except the one 

 on the horn which is always present. 



