THE PsELAPHIDZ OF NorTH AMERICA. 249 
T. cocnatus, Zec. Form more robust and convex than 
in any other species known to us. Color, bright umber 
brown, pubescence fine, body impunctate. Length, 1.25 mm. 
Plate VII., Fig. 29. 
Head with the eyes narrower than the prothorax, the usual 
lateral punctures and triangular projection quite obsolete, the 
frontal tubercles punctured. Antenne longer than the head 
and prothorax, first joint three times longer than wide, second 
oval. Third to eighth globular, slightly decreasing in size, 
the eighth slightly transverse, ninth to eleventh rapidly 
increasing in size, ninth and tenth transverse, eleventh joint 
oval, as long as the first and three times thicker. Pa/fz with 
the first joint slender, cylindrical, sigmoid in the distal half, 
clubbed; third half as long as the second, triangular, the free 
angle rounded. Fourth half as wide as long equal in 
length to the second, finely pubescent and with a terminal 
seta. Prothorax very convex, one-third wider than the head, 
widest in the middle where the sides are arcuate, and thence 
straight toward the neck and base. Neck two-thirds as wide 
as the base, disk with five basal punctures, the lateral fovez 
large. lytra as long as the head and prothorax, very con- 
vex, sutural lines not parallel, curved, dorsal parallel to the 
sutural ones and half as long. Aéddomen shorter than the 
elytra, segments equal in length. Legs slender. 
Habitat. Vancouver Island. 
T. TENELLUS, Lec. Black, polished, impunctate, elytra 
black or red, antenne, legs and palpi, red. Length, 1.4 mm. 
Piate- Vil. Big.:30. 
Head as in P. puberulus, no punctures. Antenne with the 
last three joints shorter, more rounded, obconical much more 
transverse than in the preceding species. Last joint ovate, 
acute, twice as thick as the tenth and scarcly longer, widest 
behind the middle. Pa/pz with the second joint bent, 
peduncle as long as the club, reaching backward to the 
anterior border of the eye. Third joint only one-third as 
