74 
From these data it is plain that the species transforms in the 
ground in fall and spends the winter in the adult stage in the pupal 
cells. About the middle of May they are to be found emerging, 
flying and mating by day. The larvae feed during midsummer, and 
in September the pupa! stage predominates, transformation to the 
adult beginning early in October, and probably being completed 
by the end of this month. 
Of the ii6 fields examined by Mr. Davis, pupae or adults were 
found in 30, all but one of which had been in oats, that one being 
in sugar corn. These 30 fields were in 10 counties of central Illi- 
nois. 
The larva of Anoinala hinotata is known to me only thru the 
cast skins found in cells with undoubted Anoinala pupa?. So far 
as structural characters are concerned, I find no evident difference 
by which these may be distinguished from young Lachnostcrna 
larvae of the type assigned to L. fnsca. The sensory areas of the 
last antennal joint are relatively large in comparison with those of 
LacJinostcrna, those of the inferior surface — on the same side as 
the apical tooth of the preceding segment — being quite narrowly 
separated. The double r(3w of spines, hooked hairs, etc., of the 
ventral surface of the last abdominal segment are about as in the 
larva assigned to LacJinostcnia fnsca, there being about 17 or 18 
spines in each of the two rows. 
Fig. 6. Anoinala bino- Fig. 7. Laclwosterna tmphc- 
tata, abdominal spir- '''«. abdominal spiracle of 
acle of pupa. pupo. 
The pupa is easily distinguished from that of Lachnostcrna by 
its smaller size, narrower head, depressed and broadly rounded tip 
of abdomen — this in Lachnostcrna being cpiite pointed, ending in 
two thick fleshy spines — and by evident difi^erences in the spiracles. 
In Lachnostcrna (Fig. 7) these are small circular openings with 
a sharp raised rim. In Anoniala (Fig. 6) they are large ovoid 
areas marked off by a fine dark line, concolorous with the sur- 
rounding surface and not raised above it ; the opening a vertical 
slit. 
