1878. ] The Maple-Tree Bark-Louse. 657 
after it is perceived, and the insect continues partaking of the sap 
during the deposition. The secretion, at first is soft and sticky, 
but solidifies some- 
what by contact with 
the air and remains 
perfect in form on 
the limbs after the 
eggs have all hatch- 
ed (figure 3, a). A de- 
scription is given be- 
laws 
The first eggs ap- 
pear about the end 
of May in this vicin- : 
ty and are concealed 
in the waxy mass, 
the particles divid- 
ing them one from p 
the other ; these is- Fic. 3 —a ise mass of female; 4, dorsal view of full 
sue from the oviduct grown Bii; ; c, ventral view of same; d, view of beak 
which has the open- enlarged. 
ing at the posterior portion of the fissure. When the eggs first 
appear they are soft and pliable, but afterward harden, and as the 
embryos develop the color deepens. The eggs number from 
five hundred to one thousand, the deposition occupying from 
three to six weeks, the process being a gradual one. Some three 
weeks after the first eggs are deposited the first young lice appear 
and thus continue until all the eggs are hatched. The body of 
the female does not shrink in size as is observed in some species 
of Coccide, but continues absorbing nourishment until the ovisac 
is emptied, when she withdraws her beak from the limb and dies, 
1 Lecanium acericorticis Fitch, fully grown female. Dorsal view. Oval with dor- 
sal convex carina; an anal fissure at extremity. Three thoracic and seven abdominal 
segments, Mcigin furnished with short bristly hairs. Eyes absent. Oviduct situ- 
. ated at end of posterior fissure. wou fe somewhat lurid with numerous dark blotches, 
the lines separating the ts darl 
antral view. Adina and legs visible but small. The beak arises from a tu- 
bercle situated at the extreme end of the head which forms a projection extending 
slightly over the thorax. The beak itself is a long thread-like organ composed of © 
four distinct pieces. The first pair of legs are nearly opposite the beak, the head 
and thorax ge es over one half the entire insect. Opening of oviduct at end of 
fissure. Length 
