and its chrysalids may be found in
May in the stems. Among moths, that of the American Tent caterpillar
flies during the last of June and July, and its white cocoons can be
detected under bark, and in sheltered parts of fences and out-houses.

Among others of the interesting group of Silk worms (Bombycidae) are
Lithosa, Crocota and allies, which fly in the daytime, and the different
species of Arctia, and the white Arctians, Spilosoma, and Leucarctia,
the parent of the Salt-marsh Caterpillar.

[Illustration: 251. Currant Moth.]

Many Leaf rollers, Tortrices, are rolling up leaves in various ways for
their habitations, and to conceal them from too prying birds; and hosts
of young Tineans are now mining leaves, and excavating the interior of
seeds and various fruits. Grape-growers should guard against the attacks
of a species of Tortrix (Penthina vitivorana) which rolls the leaves of
the grape, and, according to Mr. M. C. Reed, of Hudson, Ohio, "in
mid-summer deposits its eggs in the grape; a single egg in a grape. Its
presence is soon indicated by a reddish color on that side of the yet
green grape, and on opening it, the winding channel opened by the larva
in the pulp is seen, and the minute worm, which is white, with a dark
head, is found at the end of the channel. It continues to feed upon the
pulp of the fruit, and when it reaches the seeds, eats out their
interior; and if the supply from one grape is extinguished before its
growth is completed, it fastens this to an adjoining grape with a web,
and burrows into it. It finally grows to about one-half of an inch in
length, becomes brown, almost black, the head retaining its cinnamon
color. When it leaves the grape it is very active, and has the power of
letting itself down by a thread of silk. All my efforts to obtain the
cocoons failed until I placed fresh grape leaves in the jar containing
the grapes. The larvae immediately betook themselves to these, and,
cutting a curved line through the leaf thus), sometimes two lines thus
(), folded the edge or edges over, and in the fold assumed the chrysalis
form. From specimens saved, I shall hope to obtain the perfect insect
this season, and perhaps obtain information which will aid in checking
its increase. Already it is so abundant that it is necessary to examine
every branch of ripe grapes, and clip out the infested berries before
sending them to the table. A rapid increase in its numbers would
interfere seriously with t