THE PsELAPHIDA OF NorTH AMERICA. 239 
anteriorly and posteriorly. Base very little narrower than the 
width of the disk; one-fourth from it are three small fovez, 
the lateral oues on the declivity of the sides and connected 
with the middle one by a fine, nearly straight sulcus. Z/ytra 
one-third longer than the prothorax across the high, prominent 
shoulders, twice as wide as the head behind the eyes and 
twice as wide as the base of the prothorax across their tips; 
lines and basal impressions deep, disk slightly more convex 
than in 7. humeralis. Abdomen of the same form as in the 
preceding species, the median basal tubercle elongate, visible. 
Legs stout, intermediate trochanters bluntly spinose, anterior 
tibiz rough near the middle. The last dorsal is truncate in 
the male and pointed in the female. 
Habitat. Western slope of the Sierra Nevada/ Montana. 
(Wickham). 
T. ELoNGATus, Brend.. n. sp. Slender, brownish-red, 
elytra and legs brighter, impunctate, pubescence long and 
abundant. Length, 1.95 mm. Plate VI., Fig. 21. 
Head sessile, as long as its width behind the eyes, occiput 
evenly transversely convex, base sharply edged. Tempora as 
large as the eye, convergent, eyes large, supra-antennal 
process rhomboidal, the upper surface declining to the-median 
sulcus, frontal fovea large, interocular fovez small, deep, 
obliquely elongate. Aztenne longer than the head and pro- 
thorax; joints one to three longer than wide, subcylindrical, 
decreasing in size, four to eight transversely oval, half as 
wide as the first and little narrower than the third. The ninth 
and tenth are trapezoidal, the base of the former being equal 
in width to that of the second; the eleventh is as long as the 
ninth and tenth together, ovate, the truncate base half as wide 
again as that of the ninth. /Pa/f7 dirty yellow, second joint 
sigmoid, clubbed, as long as the last, third rounded, quadrate; 
the last is fusiform, nearly four times as long as wide and 
furnished with a terminal seta. Prothorax widest in the 
anterior third, length and breadth nearly equal, sides straight 
from middle to base and more convergent than in 7. humer- 
