IOWA ACADEMY OP SCIENCES. 
205 
Out of the 130 berries containing pupse mentioned above we 
secured four specimens of moths. This low per cent of adults 
is due to the fact that a large proportion of the pupae, over 100, 
were destroyed by a fungus, apparently quite similar to Sporo- 
trichum, and of the remainder a number were attacked by a 
Hymenopterous parasite {Genteterus suturalis Ash), seven of 
which issued prior to September 24th. 
The fungus was not observed to attack healthy berries, 
always making its appearance after the hole bad been made 
near the stem, and, while it seemed to develop in the tissues of 
the berry, there seems scarcely any doubt but that it is a par- 
asite of the insect. Some of the Hymenopterous parasites 
issued from berries showing fungus growth, so that it would 
appear possible for these to resist the fungus, even when pup^ 
were infected with it; that is, supposing the fungus to infest 
primarily the Gelechia. Doubtless a parasitized larva would be 
a more easy victim of fungus attack. 
The appearance of moths so late in the season, the impossi- 
bility of their producing another brood, and the improbability 
of their depositing eggs in any situation where they would 
winter and assure the larvae access to their food plant the fol- 
lowing spring, almost forces us to the conclusion that the 
moths hibernate and deposit eggs when ground cherries bloom 
the following season. This view is strengthened by the fact 
that a specimen was captured in an office room of one the col- 
lege buildings December 7, 1894. Nevertheless, so long an 
existence of the a^dult for so delicate a lepidopterous insect 
seems doubtful, and the possibility of some pupae hibernating 
or of a spring brood of larvse, even in some situation different 
from the berries of Phy salts, must not be overlooked. 
This species, as already intimated, very closely resembles 
G. quercifoliella, and it was so determined with some doubt by 
Mr. Marlatt from specimens sent to Washington for identifica- 
tion. The fact that it affects a totally different plant indicates 
it to be quite distinct from that species. It is certainly differ- 
ent from yhysaliella as described by Chambers, and has a totally 
different larval habit, that species being said to mine the leaves 
of Phy salts in September, to pupate in leaves and rubbish on 
the ground, and to issue as adult in April. Still another 
species described as physaltvorella was thought possibly to 
represent our form, though no record of its larval characters 
or habits were accessible. Mr. Marlatt has, however, kindly 
