i8 



EGG. Prof. Comstock states that the eggs are dark purple in 

 color. 



SCALE OF FEMALE. Plate 3, Fig. 8. Length, 2 2.5 mm. Mod- 

 erately elongated, broadest near the middle of the scale ; dirty white. 

 Exuviae .8mm. long, brown. 



FEMALE. Plate 8, Fig. 2. Median lobes straight and parallel, 

 having the appearance of being set closely together ; rounded on 

 their extremities, sometimes obscurely serrate on the sides. Second 

 and third pairs with the inner lobule larger than the outer, a little 

 oblique ; entire or obscurely serrate. The gland-spines are arranged 

 as follows: i, 1-2, 1-2, 2, 4-5. The first one is small and blunt, and 

 they are all as a rule noticeably smaller than in lintneri or salicis- 

 nigrae. Second row of dorsal gland-orifices represented by the ante- 

 rior group consisting of 4 7 orifices. Third row with 7 9 orifices in 

 the anterior and 5 8 in the posterior group. Fourth row with 

 10 ii orifices in the anterior and 5 9 in the posterior group. 

 Median group of rircumgenita I gland-orifices, 10 25 ; anterior laterals, 

 1 8 35 ; posterior laterals, 16 24. 



SCALE OF MALE. Plate 3, Fig. SA. Length, .6 .8 mm. Oval, 

 without carinae ; exuvia pale brown or almost colorless. 



REMARKS. 



This species was first described from Southern California and has 

 since been frequently found in that state. The Department 

 of Agriculture contains specimens from Hartington, Neb., and 

 Missouri. I have already received examples from Riley Co., Kan- 

 sas from Mr. P. J. Parrott. Prof. Comstock's specimens were found 

 on willow where they infested chiefly the young whip-like shoots 

 arising from the trunks of the trees. Specimens from the Depart- 

 ment of Agriculture and from Mr. P. J. Parrott were taken from 

 cottonwood. Prof. Comstock found eggs of this species under 

 the scales on September 12. This would indicate that the insect 

 passes the winter in the egg stage as do its near relatives in this 

 country and Europe. 



In the preparation of the foregoing descriptions I have had cotypes 

 for examination as well as many hundreds of other specimens. 



