568 CALIFORNIA ACADEMY OF SCIENCES. 



parts dark reddish brown; width 1.14 mm. The brown 

 coloration of the tubercles has disappeared. Two prom- 

 inent, reddish, continuous, subdorsal lines, also a faint 

 interrupted median dorsal line. On the pleurum, red- 

 dish markings on segments 4-11 forming two interrupted 

 rows of short, sinuous lines. Prominent reddish -brown 

 blotches on segments 8 and 11. Length 7 mm.; width 

 .65 mm. 



Third stage — Width of head 1.45 mm. Color of body 

 bright yellow. Subdorsal lines more pronounced than in 

 previous stages and continuous; mesal line present or 

 not; on [segments 2 and 3 are two parallel reddish lines 

 extending ventrad from the subdorsal line a short dis- 

 tance. Cervical shield black. Length 10 mm. ; width 

 .78 mm. 



Fourth stage — Width of head 1.88 mm. There may or 

 may not be faint interrupted lines between the median 

 dorsal and subdorsal lines. A more or less interrupted, 

 ill-defined reddish supra-stigmatic line appears, with nar- 

 row uneven lines running longitudinally between this 

 supra-stigmatic line and the subdorsal lines. (All these 

 lines unite^in the last larval stage to form the broad sub- 

 dorsal band, in which the composing lines may be partly 

 traced.) An interrupted reddish stigmatic line is appar- 

 ent on segments 1-9. General color of body bright to 

 dirty yellow, the cervical and anal shield and dorsal 

 blotches black. Length 18 mm.; width 1.5 mm. 



Fifth stage — Width of head 2.22 mm. Markings of 

 body as in previous stage, but usually more pronounced. 

 Length 22 mm. ; width 2 mm. 



Sixth stage (see c, plate Ivi) — Head large, rounded, 

 bilobed, mesal line pronounced, bearing a few conspic- 

 uous hairs; smooth, dark brown, shining; ocelli and 

 adjacent region black; clypeus prominent, ashy-gray; 



