THe PsELAPHIDA OF NoRTH AMERICA. 29 
entire, countersunk, fine carina, circumambient sulcus con- 
spicuous, ending posteriorly in round spongious fovez, twice 
as distant as either from the eye; lateral margin overhanging 
the eyes by its sharp carinate edge, punctate, more so on the 
frontal margin. ‘lhe front is narrowly concave in the middle, 
and divided by a fine impressed line, declivous anteriorly to 
the inter-antennal line, the declivity bilobed, and beset with 
long convergent hairs; between these hair pencils, from the 
depths of the emargination, two pairs of small triangular 
teeth emerge, the outer ones smaller, inconspicuous. Sub- 
frontal excavation deep, from the bottom of which a broad, 
triangular, horizontal tooth stretches out, resting with the 
acute point on the tip of the conical clypeal tuberosity, the 
base of which rests again on the transverse labrum; the cone 
is just perceptibly higher than broad at the base, and laterally 
separated by a groove from the lateral expansion (wing) of 
the clypeus, which is concave, with a retuse angulated mar- 
gin. The profile of the face resembles somewhat the form of 
a sheep’s face. Antenne ¢ longer than head and prothorax, 
first joint as long as the third, and more than twice as long as 
the second, triangular, the free angle thorn-like, pendant; 
second transverse, just visibly broader than long; third a little 
thicker than the second; fourth to eighth obconical, gradually © 
shorter; eighth quadrate; ninth transverse, truncate at the 
base, obconical; tenth larger, globose, as thick as the eleventh, 
which is conical, as long as the two preceding together, ob- 
liquely pointed. In the g the frontal margin is interrupted in 
the middle, continuous with the clypeal surface, which is 
roundly margined anteriorly. The first antennal joint is con- 
vex below, the third obconical, longer than wide, longer than 
the second or fourth; tenth not as thick as the last joint, 
which is two and one-half times longer, rounded at base, 
pointed at tip. Prothorax as long as wide, median sulcus 
deep, ending abruptly one-fourth from the neck, which is 
carinate. Discal crest sharp, interrupted before the small, 
sharp-pointed tubercles, which are nearer to the base than 
