2 ENTOMOLOGICAL NEWS. [Jan., ’08 
I attempted to get them to locate upon cottonwood twigs by 
inclosing them with twigs in a breeding cage, but without suc- 
cess. 
While it seems probable that the winged migrants establish 
new colonies somewhere, perhaps upon some different food 
plant, it is also certain, as in the case of Chermes coloradensts, 
that some of the apterous females live over winter upon the 
trees, for bark which I removed January 29th, at Grand June- 
tion, was found to have living lice and some eggs. These eggs 
I was able to hatch in the laboratory, and the young established 
themselves upon cottonwood twigs that were furnished them 
and did well. When very numerous, the lice often cause rough, 
knot-like growths of trunk or branches, much as in the case of 
Schizoneura lanigera of the apple. 
The Eggs—rThe eggs are very pale straw yellow, much 
lighter than any of the Chermes eggs I have seen, and are .023 
mm. in length by .o14 mm. in width. The eggs are not attached 
but simply entangled by the cottony secretion. 
Young.—The newly hatched young are like the eggs in gen- 
eral color, with legs, antennz and distal end of the long beak 
dusky, and the eyes bright red. 
Adult Apterous Female—rThe adult apterous females are 
also very light yellow in color, the older individuals being the 
darker. Large females measure approximately .8 mm. long by 
.6 mm. broad. The size and arrangement of the wax glands or 
plates are best indicated in the drawing, Plate I, Figs. D and E. 
The only plates showing on the ventral surface are the mar- 
ginal ones, while dorsally all the longitudinal rows extend 
continuously to the eighth abdominal segment. At least they 
can be so traced in some individuals. The beak is peculiar, in 
that it may be extended so as to attain, or even surpass, the 
tip of the abdomen, when it appears to be four-jointed. The 
rather long basal piece seems to serve as a tube into which 
the next joint, the real first joint, composed of seven or eight 
serial pieces, as shown in the figure, may be telescoped. The 
two distal joints are both quite short. From specimens taken 
June 16th, and December 12th, 1906, at Grand Junction. 
Winged Female——Length of fore-wing, 3.50 to 3.75 mm.; 
