586 Bulletin N0. 187.
the stem, in which position the ovipositor was forced into
the stem. The process was repeated, the eggs being placed or
one above the other at pretty regular intervals. The egg is
completely buried in the tissue, and the only outward evi-
A dence of its presence is the small cap at its extremity. The
egg period ranged from six to twelve days.
Two broods were reared in the Insectary. The time from
hatching of the egg to maturity was on an average 18 days
and 3 hours for the first brood and for the second, 26.5 days, ·
including the period in the egg stage.
Some irregularity in the number of molts was noted, but 1 —
five molts were undoubtedly the rule. Two cases gave six
molts, according to Mr. Jewett’s notes.
First Brood Reared. 4Young began to appear July 9, _
when several were observed as they hatched from eggs in
clover stems. Many died after a few days, others reached
the adult stage.
Second Brood Reared.e—Eggs were deposited July 31, Aug.
7, 8 and 19. The brood had matured Sep. 19. Adults mated
readily but no eggs were obtained. Adults from the field
also showed no inclination to lay at this season, tho mating
was observed among them. No young could be secured by
careful sweeping done at this time and it was evident that
the insects were prepared to hibernate, as they had already
been proved to hibernate, as adults.
First Brood of Coriscus {crus.
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