-91 — 



Preparatory Stages of Janassa lignicolor, Walter, 

 By Harrison G. Dyar. 



Egg. — Globular and smooth. (The eggs were hatched when found, only the 

 shell remaining.) 



First larval stage. —Pale brownish yellow. The head, the hump on joint 5, 

 and a dorsal line on the anterior segments, of a more distinctly brownish shade. Anal 

 feet partly aborted. 



Second larval stage.— Head shghdy notched on top ; yellowish, marked with 

 two brown bands. Body yellowish. Humps on joints 5 and 12 brownish, as is also 

 the semi-obsolete dorsal line. 



Third larval stage — The markings of the mature larva now begin to be as- 

 sumed. Head brownish, with four confluent round whitish spots in front, the mouth 

 parts and mottlings on each side of the band also white. The body is pale brownish 

 with three large dark green patches, two on each side of joints 3 and 4, as in C(k/o- 

 liasys unicornis, and the third, a dorsal patch, on joints II and 12. Black shades on 

 the sides of joints 6 and 7, and on the dorsum on 8, 9 and 10. A white spot at the 

 spiracles on joint 11. 



Fourth larval stage. — The dorsal green patch extends on joints 9 and 10, in- 

 closing an oblong brown space. Black shades laterally on joints 5, 6 and 7, and 

 dorsally on 8. Several white spots at the spiracles of joint 11. 



Fifth larval stage. — Mature larva. Head, elliptical, with a depression at the 

 summit, smooth. A hump on joint 5, prolonged upward and backward ami termin- 

 ating in two ])oiiits, tipped with while. A pointed elevation on joint 12. Anal feet 

 partly aborted, as in allied genera. Head whitish, with two mottled yellowish and 

 bruwn bands, dentate inwardly, dividing the ground color in front into white spots ; 

 two iit-ar the vertex, two rounded near the center, and the mouth parts and the space 

 inmediiitely above them, white. Similar markings occur on the sides of the head, 

 the ground color being divided into about six partly confluent white spots by brownish 

 mottlings. Body, pale whitish, mottled with brown, much more heavily dorsally. 

 A large dark green patch on each side of the anterior segments, bordered with brown, 

 this border continued backward ventrally on joints 5 and 6, to joint 7. On the 

 dorsum is another large dark green patch, beginning on joint 8 in two points, in- 

 closing a patch of the ground color on joint 10, extending down on the sides at this 

 segment, and ending abruptly at the end of joint 12. It is bordered with brown on 

 joints 8, 9 and 10. The hump on joint 5 is shaded with dark brown, and there is a 

 black patch on each side of joint 7 : but this last marking is, in some cases, more or 

 less obsolete. The spiracles on joint 11 are surrounded by a circular row of white 

 spots, while the spiracles on joint 12 are black. Abdominal ieet, whitish, with a 

 brown line above the claspers, the line on joint 10 darkest. 



Cocoon. — Tough and parchment-like, semi-transparent, similar to that of 

 Ccelodasys unicornis. After forming its cocoon the larva fades to a nearly uniform 

 whitish color, and the change to pupa does not occur till about a month before the 

 emergency of the imago in the Spring. 



Pupa — Shining, light reddish brown, appearing somewhat darker between the 

 segments ; minutely, but sparsely punctured. At the posterior edge of the thorax 



