DRiECULACEPHALA NOVEBOKACENSIS FITCH- 59 
MIGRATION. 
Aside from the local migration which works in passing from field to 
field and the selection of attractive areas, the insect shows at times 
a distinct habit of migration at night. A number of instances are 
known where immense numbers have collected around electric lights, 
and this would seem to be associated with some general movement 
which brought them, perhaps the wind, as otherwise we can hardly 
account for the movement from their sheltered locations near the 
ground. Such migrations are observed during midsummer but, so 
far as I know, no instances of the migrations in late autumn have been 
observed. 
REMEDIES. 
Available remedies for this species are suggested in its habit of se- 
lecting the coarser kinds of grass for egg deposition in autumn, as it is 
quite possible to cut or burn such grass, and in this way the number 
of eggs that survive wall be greatly lessened. The insect jumps very 
readily and may be captured in the hopperdozer quite successfully. 
It would also be open to treatment with the spraying machine when 
it occurs in fields which could be run over by such apparatus. 
That the species is kept in check by parasites is evidenced by the 
fact that eggs are parasitized by one of the minute forms, probably 
Trichogramma, the species undetermined. 
The occurrence of the fungus mentioned above may also be con- 
sidered a distinct factor in the control of this species, although we 
can not suggest any practicable means of extending its operations. 
Doubtless the activity of predaceous species of insects and spiders 
plays a very considerable part in keeping the numbers down, and 
birds should be expected to take a larger proportion of these than of 
the smaller species. 
Dr^eculacephala xoveboracexsis Fitch. 
Drseculacephala novehoracensis Fitch is considerably larger than 
Dr. mollipes, and a little lighter in color, the shape of the head is differ- 
ent, being shorter and blunter, and there are two very distinctly 
marked dots at the tip. In its distribution it covers the larger part 
of the northern United States, from Vermont to Vancouver's Island, 
and south in the plateau region to Colorado, but its food plants are 
restricted to the coarse grass of low ground, and the common slough 
grass is apparently one of its favorite host plants. Adults are com- 
monly taken during the latter part of June, through July, and from 
the middle of August until October, so we may safely assume that 
there are two generations annually and a life cycle corresponding 
closely to that of Dr. mollipes. 
