THE PsELAPHIDZ OF NorTH AMERICA. 49 
one-fifth wider than the head with the eyes included; the sides 
are strongly arcuate, slightly sinuate anteriorly toward the 
neck, strongly sinuate posteriorly to the base and crenate; the 
base is twice as broad as the neck; the disk broadly convex, 
polished, indefinitely and imperceptibly punctulate; near the 
anterior margin is a comma-shaped longitudinal fovea with its 
attenuated end not reaching one-third of the pronotal length; 
one-third the length from the base is a deeply impressed, 
slightly arcuate groove, connecting the lateral, pubescent, 
rather irregularly shaped foveze with the triangular median 
impression; the slightly elevated space between the transverse 
sulcus and the thinly elevated basal margin has on each side 
of the middle a small rounded impression (or perhaps a tuber- 
cle), and, near the basal angle, a deep puncture. /ytra as 
wide across the rather prominent shoulders as the prothorax, 
the sides evenly arcuately divergent; the length of the suture 
is equal to the width of the shoulders, the sutural lines are 
nearly parallel, fine, and close, the lateral one-half of the elytral 
length, fairly conspicuous; the base of the elytra is slightly 
elevated, the basal impression transversely dilated. Abdomen 
short and broad, sides of the three upper segments parallel, 
the four segments sub-equal in length; the base of the first 
segment has three transverse depressions, of which the mid- 
dle one is twice as wide as the lateral one. Legs slender, 
weak. The sexual differences are not very prominent, con- 
sisting of the rounded form (4) of the last ventral which is 
broader than in the 9, and the transverse impression on the 
penultimate ventral segment. 
Habitat. Mississippi Valley. 
T. LATICOLLE, Casey. Variety of the preceding; darker 
in color, nearly piceous-black, the elytra in some reddish, in 
others greenish brown, legs and antenne paler. The 
prothorax is more strongly sinuate at the sides near the base 
and the median oblong fovea is shorter, being in some a mere 
comma-shaped puncture. 
Habitat. Louisiana. Iowa. 
