82 
COLF.OPTER A. 
There is an undescribed kind of Phyllophag fit, or leaf-eater, 
called, in my Catalogue of the Insects of Massachusetts,* fra- 
terna, because it is nearly akin to the quercina, in general 
appearance. It differs from the latter, however , in being 
smaller, and more slender ; the punctures on its thorax and 
wing-covers are not so distinct, and the three elevated lines 
on the latter are hardly visible. It measures thirteen 
twentieths of an inch in length. 1 his beetle may be seen 
in the latter part of June and the beginning of July. Its 
habits are similar to those of the more abundant May-beetle 
or dor -bug 
Fig. 11 . 
Another common Phyllophaga has been described by Knocli 
and Say, under the name of hirticula (Fig. 
11), meaning a little hairy. It is of a bay- 
brown color, the punctures on the thorax 
are larger and more distinct than in the 
quercina , and on each wing-cover are three 
longitudinal rows of short, yellowish hairs. 
It measures about seven tenths of an inch 
in length. Its time of appearance is in 
June and July. 
In some parts of Massachusetts the Pliyl- 
lopliaga Qeorgicana (Fig. 12) of Gyllenhal, 
or Georgian leaf-eater, takes the place of the 
quercina. It is extremely common, during 
May and June, in Cambridge, where the 
other species is rarely seen. It is of a bay- 
brown color, entirely covered on the upper 
side with very short, yellowish gray hairs, 
and measures seven tenths of an inch, or 
more, in length. 
Fig 12. 
* Tn order to save unnecessary repetitions, it may be well to state, that the 
Catalogue above named, to which frequent reference will be made in the course 
of this treatise, was drawn up by me, and was published in Professor Hitchcock s 
Report on the Geology, Mineralogy, Botany, and Zoology of Massachusetts, and 
that two editions of it appenred with the Report, the first in 1833, and the sec- 
ond, with numerous additions, in 1836. 
