112 
rious places, belonged to the species A. rusticus, discoideus, balti- 
morensis, harrisi, sericeus and opaculus. Animal matter made about 
one-fourth of their food, recognizable insects being estimated at only 
three per cent.; the vegetation, as far as determined, was chiefly 
derived from June grass and other grass-like plants. 
The record of ten specimens taken from the canker-worm orchard 
is not especially different from that of the foregoing group. Only 
one of these had eaten animal matter at all, ninety per cent. of 
the food of this consisting of undetermined Diptera. Here, again, 
the recognizable vegetation was chiefly graminaceous, only ten per 
cent. being clearly derived from exogenous plants. ‘T'wo specimens. © 
from the cabbage field afford no occasion for special remark. ‘The 
stomach of one was distended with liquid animal food; that of the - 
other contained vegetation only. 
GENus AMPHASIA. 
Four examples of A. interstitialis indicated that this species is al- 
most strictly vegetarian, only three per cent. of the food consisting 
of insects. Of the remaining ninety-seven per cent., little can be 
said except that it was certainly of vegetable origin. 
GeENus BrRADYCELLUS. 
A single specimen of B. dichrous had eaten only insects, which 
could not be further classified. 
Genus HaRPawus. 
Nineteen specimens of Harpalus were studied, belonging to the 
three species caliginosus, pennsylvanicus and herbivagus. Twelve of 
these, taken at various times and places, had obtained more than 
nine-tenths of their food from the vegetable kingdom. Most of this 
consisted of the pollen of flowers, and of the tissues of grasses, al- 
though various fungi amounted to thirteen per cent. Three speci- 
mens of H. caliginosus and H. pennsylvanicus, taken among the 
canker-worms, had derived one-third of their food from those cater- 
pillars, while the other two-thirds consisted of vegetation, sixteen 
-per cent. being fungi, and the remainder chiefly seeds and exogenous 
tissues. Four specimens of H. herbivagus, collected in the cabbage 
field, in April, had eaten none of the cabbage-worms, and only ten 
per cent. of insects (Diptera). The remainder. of the food consisted 
apparently of fragments of seeds, as indicated by the contents of 
the cells of the fragments and by other microscopic characters. A 
piece of the epidermis of grass was noticed in one of the beetles. 
Taking the genus Harpalus as a whole, as far as these nineteen 
specimens can be supposed to indicate its food, we find that only 
about one-eighth of it consisted of animal substances. Insects stand 
at nine per cent., two-thirds of them caterpillars,—ants and Diptera 
making up the balance. Among the items on the vegetable side of 
the account, we find fungi and pollen of Composite, each eleven per 
cent., and seeds and other tissues of grasses, fourteen per cent. 
