POLYPHYLLA VARIOLOSA. 
33 
Phyllophaga pilosicollis (Fig. 13) of Knoch, or the hairy- 
neeketl leaf-eater, is a small chafer, of an 
ochre-yellow color, with a very hairy tho- 
rax. It is often thrown out of the ground 
by the spade, early in the spring; hut it 
does not voluntarily come forth till the 
middle of May. It measures half an inch 
in length. 
Hentz’s Melolontha variolosa 11 (Fig. 14), 
or scarred Melolontha, differs essentially 
from the foregoing beetles in the structure 
of its antennae, the knob of which consists 
of seven narrow, strap-shaped ochre-yellow 
leaves, which are excessively long in the 
males. This fine insect is of a light brown 
color, with irregular whitish blotches, like 
scars, on the thorax and wing-covers. It 
measures nine tenths of an inch, or more, 
in length. It occurs abundantly, in the month of July, at 
Martha’s Vineyard, and in some other places near the coast ; 
but is rare in other parts of Massachusetts. 
The foregoing Melolonthians are found in gardens, nur- 
series, and orchards, where they are more or less injurious 
to the fruit-trees, in proportion to their numbers in different 
seasons. They also devour the leaves of various forest-trees, 
such as the elm, maple, and oak. 
Omaloplia 6 vespertina (Plate II. Fig. 14) of Gyllenhal, and 
sericea of Illiger, attack the leaves of the sweetbrier, or sweet- 
leaved rose, on which they may be found in profusion in the 
evening, about the last of June. They somewhat resemble 
the May-beetles in form, but are proportionally shorter and 
[ 4 iIel °l™tha variolosa. This insect belongs to the genus Polyphylla , proposed 
by Dr. Harris, and now adopted by all entomologists. — Lec.] 
[ 5 Omaloplia. The species here mentioned, with all the other allied American 
species, belong rather to Serica of M’Leay, than to truo Omaloplia, which is thus 
far confined to the other continent. — Lec.] 
5 
Fig. 13. 
