1878. | The Maple-Tree Bark-Louse. 661 
destroy the young lice. The larve are readily recognized from 
the larve of the former by being covered with a large 
number of black spines, they are considerably larger, 
andare not found inside the egg-mass. They are rav- 
enous feeders, and require a great number of lice be- 
fore they complete their. larval state. The imago resembles the 
signata in color, but is much larger and equally voracious with the 
young. 
The Anatis 15-punctata is also beneficial in its destruction 
of the acericorticis,and is larger even than the preceding ones, but 
does not occur so plentifully. 
The larve are furnished with six rows of stout spinulated 
spines along the body, the upper surface of which is black, while 
beneath it is pale, and is nearly half an inch in length. The 
beetle is black on the head and prothorax, having seven black 
spots on the brownish-red elytra, and a black spot on the scu- 
tellum ; it is seven-twentieths of an inch in length. 
The larvae of a species of Chrysopa are found assisting in the 
work of destroying the enemy, but not in any considerable num- 
bers, as also two species of Reduvide and one Acarus. 
The females are destroyed by means of a parasite which live 
upon the fatty substance with- 
out disturbing the vital organs, 
and only destroys the insect 
when changing to the, pupa 
through a cylindrical hole on 
the dorsal side. This parasite 
is double-brooded, the second 
brood appearing the middle Fic. 6.— Coccophagus eani; poy. s 
of August. The “insect: be OPP 6, imago ; hair lines natural size. 
longs to the genus Coccophagus, thanks to Mr. E. T. Cresson for 
its a and appears to be undescribed (figure 6). 
ccophagus lecanii, nov. sp. Fig. 6. Body. pa ar hors color cinereous. Head 
hor 
as tee as the thorax, smoky brown in color, ubesc Antenne Pe eR pa ie 
first joint longest. Thorax nearly black, with a ieee shaped spot ale yellow 
placed crosswise upon the hind part of the thorax. Abdomen elliptical, a little 
longer than the thorax. Legs ligat brown with the femora. dnit, hairy, furnished at 
the apex of tibiæ with a spur ; tarsi wit Si bagged join 
ings membraneous, hyaline, ciliat wings with the rib-vein running 
i and ends in-a 
