‘ “ “ Tae eee “3 
. 2 . < : < voy 
- 84 ss 
and two dorsal, the latter small and inconspicuous. Cornicles wanting. 
The anal plate, cauda, and a short and narrow transverse band on the: 
eighth segment above, are light yellowish brown, a whitish line on the 
anal plate just behind the cauda. Anal plate strongly prominent, sub- 
globose, very convex below and more flattened above, minutely scabrous, 
clothed with rather long incurved hairs; cauda represented by a shorter 
subtriangular elevated plate on its upper surface. 
Beak brownish dusky, tip black, attaming or slightly surpassing 
hind coxe, apical joint about as long as last antennal joint, penultimate 
joint about half as long, and somewhat thicker, being about as long as 
thick; lunate marks at its base distinct; apparent basal joint slender, 
about two and a half times as long as the apical two combined. Legs 
rather short, light brownish dusky, cox paler, sutural lines brown 
about coxe, two distinct claws and two tarsal joints on all the legs, tarsi 
and claws dark; fore legs very close to head. Prothoracie spiracle light 
brown, distinct, below the lateral gland. Abdominal spiracles each in 
the posterior margin of a small brownish spot, anterior margin of spira- 
cles finely outlined in black; sometimes an inner row of hight brown 
spots, one beneath each abdominal spiracle. Seventh ventr al segment 
with a thickened and slightly darker plate at middle, which has at 
sach end a group of sparse hairs. A few hairs on the ventral segments 
preceding the seventh. 
Length of body 2.2 mm., greatest width (across abdomen at mid- 
dle) 1.1 mm., antenna .55 mm. 
The young are more slender, with long beak and _ five-jointed’ an- 
tenn, or four- jointed in the youngest. 
Described from ten lots of specimens. 
The cauda and anal plate and antennal structure will distinguish 
this species, in case the glands are not evident, from the others infesting 
corn. 
Forda occidentalis, n. sp. 
(Plate IX., Fig. 3.) 
Another root louse which has been found on corn in unimportant 
numbers is a species of Forda, here described as new. It seems to be 
mainly a grass root louse, and has been taken by us eight times, as fol- 
lows: April 4, (no situation given); April 10, on Capsella bursa-pas- 
toris, attended by Formica fusca gagates ; April 11, on roots of blue- 
grass in edge of corn field, with Lasius interjectus; April 23, from a nest 
of Lasius; April 28, in blue-grass sod, attended by Lastus niger; April 
30, in a pasture, with Lasius niger; May 7%, in a corn field; May 3 
on roots of corn, on sod ground, attended by Lasius. 
It will be seen that these collections have all been made in early 
spring, and with but two exceptions in the month of April. The life 
history of this species is thus unknown. 
DESCRIPTION.* 
Wingless Viviparous Female——Body oval or ovate, smooth, uni- 
form light glaucous green, sutures not conspicuous, body and appen- 
dages sparsely covered with fine and rather short hair. 
* By 7G. TA. Hart. 
