190 The American Naturalist. [February, 
Europe is shown by the way they fit into established European genera. 
South American species have required the erection of many new gen- 
era. 
A large number of new species are described in the present mono- 
graph, which concludes with a full Bibliography and eighteen original 
plates illustrating structural details of members of the various gen- 
era. 
Peculiar Oviposition ofan Aphid.—During the autumn of 1890 
I found a species of Phyllaphis on beech in central Ohio, the oviparous 
form of which agrees with Buckton’s short description and figure of P. 
fagi. I presume that it is that species, but do not think the present 
evidence justifies a definite reference to that effect. The colonies were 
found on the underside of the leaves, with more or less floceulent mat 
ter about them. The sexed forms developed during October, and the 
oviparous females wandered over the bark of the twigs, limbs, and 
trunk in search of crevices in which to deposit their eggs. When a 
Fig. 1.— Phyllaphis of beech: a, oviparous female, magnified ; 4, head and 
antenna of same, greatly magnified; c, egg on bark, magnified. 
position by 
suitable place is found the egg is laid, and then driven into 
hind legs 
the following method: The insect so places itself that its oo 
easily touch the egg, then standing on its four front ones it bragr th 
two hind ones down upon the egg in rapid succession, striking = 
considerable force. This serves the double purpose of pushing ga 
in place, and of drawing out a viscid secretion, with which it is cove 
into a thread-like, silvery film, that so resembles the surrounding bar 
that it isdifficult to detect it. I watched an oviparous louse go th p 
this process for about a minute and a half.—C. M. Weed in Trans : 
Ent. Society, November, 1893. 
