— 15— 



Fourth larval stage. — Head green, with minute brown speckles 

 and a few black hairs; eyes, jaws and palpi brown. Body green, a 

 broad white stigmatal line, a narrow subdorsal one and two more in 

 the subdorsal space also white. The upper of these lines is some- 

 what wa\'y and interrupted, and the lower one is broader than the 

 subdorsal line. On each joint two rows of white dots with black 

 centres bearing short black hairs. The spots alternate on the mid- 

 dle joints. Thoracic feet tinged with blackish, the abdominal con- 

 colorous with the body. Length about 12 mm. 



Duration three days. During this stage and subsequently the 

 larva eat the whole leaf instead of the lower portion as previously. 

 If disturbed, the insect curls spirally and falls to the ground with 

 contortions. 



Fifth larval stage — Mature lar\'a. Head shiny green, jaws 

 brown, palpi black. In some examples there is a black stripe on 

 the head. Body dark green, the lines as in the previous stage, the 

 stigmatal ending sharply above, but blended ventrally. 



The elevated spots bearing white hairs are whitish, except the 

 suprastigmal ones, which still have black centres. Cervical spot and 

 anal plates dull pale green. The stigmatal space and venter have 

 some minute white spots, and on each joint from 5 to 10 inclusive, 

 there is a small black dorsal spot situated anteriorly. Spiracles 

 white in a black oval. Thoracic feet blackish; joint 12 is slightly 

 enlarged and joint 13 is small. The abdominal legs throughout 

 its history, consists of only three pair on joints g, 10 and 13, and 

 the lar\a walks like a geometer. Length 25 mm. 



Duration of this stage four days. 



The insect spins a thin web of white silk in which to pupate, 

 ■drawing together any loose objects to assist in covering it, and this 

 operation, together with the preparation for pupation, occupies two 

 days. 



Pupa. — Depressed somewhat above the wing cases at back of 

 the thorax, the eyes prominent, the tongue case projecting below 

 the wing cases, forming a round prominence over the first abdominal 

 segment. The cremaster is short and blunt, and the hooks with 

 which it is furnished, are fastened in the silk of the cocoon. Wing- 

 cases slightly creased. Color brownish black, but paler at the join- 

 ings of the parts and between the abdominal joints. In occasional 

 instances the whole pupa is pale. 



Duration of this stage twelve days. 



Food- Plant. — MaK'a. Larvae from Los Angeles Count}-, Cala. 



For the determination of this species I am indebted to the kind- 

 ness of Prof John B. Smith. 



