60 NATURAL History BULLETIN. 
parabolic sulcus; antennal tubercles small, prominent. Antenne 
not much longer than the head, slender, ninth joint as long as 
the tenth and twice as wide; tenth one-third wider than the 
eleventh; the last joint is much wider, as long as the four 
preceding together, elongate, ovate-acuminate. Prothorax 
widest before the middle, a little wider than the head and 
slightly wider than long; base two-thirds of the pronotal width, 
the neck one-half of that measure; disk convex, granular, with 
a deep, median, fusiform sulcus, transverse sulcus one-third 
from the base, but slightly dilated in the middle, connecting the 
large, pubescent, lateral fovee. A/lytra, at the shoulders, 
wider than the pronotum, sides arcuate, disk quadrate, convex, 
impunctate, shining, discal lines short, not conspicuous. Ad- 
domen narrower than the elytra, impunctate, shining convex, 
the first two dorsal segments with two short, distant, carine. 
Legs short and slender. 
Habitat. Louisiana, Georgia. 
E. PLANIPENNIS, Brend. Piceous brown, abdomen and 
prothorax paler; much depressed, densely pubescent with fine, 
appressed hair. Length 1.25 mm. Plate XII., Fig. 118. 
flead triangular, anteriorly truncate, posterior angles 
strongly arcuate, eyes very prominent, as long as the tempora, 
base entire, across the posterior angles twice as wide as the 
straight frontal margin; frontal tubercles small, space between 
them and behind the frontal margin deeply concave, occipital 
fovee large and connected with the frontal excavation by a 
very short sulcus, leaving in the middle of the vertex a short, 
acute, triangular elevation, posteriorly continuous with the 
occiput. Antenne one-half longer than the head, joints one 
and two nearly equal, rounded, longer than wide, third to 
eighth very transverse, equal, narrower than the second, ninth 
one-third wider, tenth twice as long and wide as the ninth; 
last joint ovate, truncate at the base, one-third longer than 
wide, slightly wider than the tenth, pubescence denser at the 
tip. LPalpi short, yellow. Prothorax very broadly convex, 
nearly plane, punctulate, sides evenly rounded with the basal 
