238 NatTuraAL History BULLETIN. 
from the base is a fine transverse sulcus; a rounded fovea is 
in the middle; lateral foveze small. A7ytra one-fourth longer 
than the prothorax across the high, prominent shoulders, and 
not quite double the length across the hips. Disk finely punc- 
tulate, impressed lines and two basal fovee deep, the sides 
slightly arcuate. Addomen but little longer than the elytra, 
and narrower at the base than across the posterior margin of 
the first-segment, which is almost imperceptibly longer than 
the second. Margins very broad, retuse, a minute tubercle in 
the middle of the base. Legs strong, middle trochanters with 
a strong, blunt spine at the ends, anterior tibiz with a short, 
spinulate submedian carina. Male with the last dorsal emar- 
ginate at tip, last ventral slightly impressed, punctured, these 
characters being wanting in the female. The male has also 
the posterior tibia more arcuate. 
Habitat. Eastern slope of the United States. 
T. corticinus, Casey. Brown, elytra red, abdomen piceous- 
black, pubescence fine, short, appressed. Length 2 to 2.2 
mm )Plate Vi. Fig. 20. 
Head, eyes included, slightly longer than wide, frontal tuber- 
cles quadrate, separated by a fine line which is connected with 
an oblong frontal fovea. There are also two small fovee 
between the eyes. Antenne more than half as long as the 
body, joint one long and conical, two smaller, of the same 
form, three to seven subequal, only very slightly decreasing 
in size. The eighth joint is the smallest and is quadrate, the 
ninth is as long as the two preceding together, obconical, 
longer than wide, the tenth is larger, of the same form as the 
ninth. The eleventh is ovate, one-half wider and twice as long 
as the tenth. Pa/pi with the second joint long, clavate, arcuate, 
third shorter, obovate, as thick as the club of the second; fourth 
not thicker than the third and’twice as long, fusiform, pointed 
at both ends with a long terminal seta. Prothorax about as 
wide as long, widest one-third from the neck, where the sides 
are rounded; from this point the sides are nearly straight 
