NO. i:ot. LEPfDO/'TEh'A OF Til F. KOOTFXAI niSTIUCT- DVA I!. 8^9 



MAMESTRA DISCAI.IS Grote. 



Eii>iity-.six speciuieiis, June 2'A, IM), July 1^, 30, August 3, 5, 6, 7, 

 11, 13, Sandon ((t. C. Ro])l)ins). Ej'-<i:s were obtained from .several 

 captive females. The larva? did well at tirst, but soon showed a ten- 

 dency to hib(>rnate. Manv were actually hibernating at Kaslo on 

 August 12, and only a few were with difficulty forced to the fifth 

 stage. The last stage ther(if()re remains to be described, 



E(/(j. — Two-thirds spherical, evenly rounded, base broad; laid in a 

 large mass. Ribs about 40, low, broad, diminishing to vertex, crested 

 by the sharp vertical reticulations which are, like the cross stria^, 

 distinct, forming regular parallclogramic cells bending doAvn in the 

 hollows. Greenish white, not changing color; diameter, 1.1 mm. 



St(i(je I. — Head bilobed, round, pale brownisli, wltli smokv l)lack 

 spots at the tubercles. Body moderate, normal, joint 12 enlarged, the 

 feet of joints 7 and 8 smaller than the rest, but not greatl}^ so. 

 Whitish, Avithout marks, cervical shield ver}' weak, partly smoky. 

 Tubercles large, brownish black, angularly edged, only the primarv 

 ones present, iv stigmatal posterior, ia to iib of thorax separate, iib the 

 largest, all normal. Leg shields faintly dusk}-. 



Stage II. — Head bilobed, shining pale brown with round black spots 

 on the tubercles; width, 0.8 mm. Body moderate, joints 5 to 7 looped 

 up a little. 12 eidarged; whitish green, the folds whiter; dorsal and 

 subdorsal lines faint Avhite, straight; lateral space solidly brown lilled; 

 stigmatal band just over tubercle iv, very broad; a soft white shading 

 over subventral area. Feet pale; tubercles round, black; feet of joints 

 7 and 8 small. Cervical shield concolorous, but Avithout green tint, 

 its tubercles black; abdominal feet dusky without. 



Stage III. — Head shining reddish l)roAvn, reticulate Avith darkei' on 

 the vertex; diameter, 1.1 nun. Bod}- equal, joint 12 a little circularly 

 enlarged. Sordid olivaceous green, checkered by very pale subdorsal 

 patches intersegmentally; dorsal and subdoi'sal lines broken, narrow, 

 the dorsul bimacular, the subdorsal dotted, bright Avhite. Sides all 

 vinous broAvn, olivaceous mottled. Substigmatal band with ^\hite 

 edges, green tilled; subventcr and feet pale. TulxM-cIes round, black, 

 distinct; no shields; setie moderate, pale; feet of joint 7 rather small. 



Stage TV. — Head brown with dark brown reticulations; joined into 

 the usual vertical bands; Avidth, 1.7 mm. Bodv normal, joint 12 

 scarcely enlarged, feet equal. BroA\ n gray, l)lack dotted icticulate on 

 a brownish ground, especially in a tlorsal hand of diamoiid->h:q)ed 

 marks and laterally. Dor.sal line white, out into two segmental streaks, 

 the posterior one Avith a small macular enlargement; subdorsal line a 

 roAV of fine dots, the space abo\a^ it and betAveen the dorsil marks 

 lighter. Sub.stigmatal l)and Avith white dotted edges, nearly (Mitii-ely 

 lutcous tilled. Subventral area luteous, Avhite and black dotted; venter 



