THE PsELAPHID2 OF NorRTH AMERICA. 71 
arcuate groove; frontal margin nearly straight, the lateral 
tubercle small, prominent; surface rather rough, punctured. 
Antenne three-fourths the length of the head and prothorax 
together, the last three joints gradually wider, the last oval, 
as long as the three preceding together. Prothorax punctate, 
slightly shorter and narrower than the head, wider than long, 
widest before the middle, sides convergent, nearly straight 
towards the base, which is two-thirds as wide as the disk; 
neck very slightly narrower, disk with a slightly elongate 
fovea near th2 center; one-fourth the length from the base is 
a deep, transverse, impression; lateral fovee deep, rounded, 
not connected with the median impression. /lytra, across 
the shoulders, slightly wider than the prothorax, sides nearly 
parallel, very feebly arcuate, disk as long as wide; sutural 
lines deep, arcuate, discal lines fine, slightly arcuate, half the 
‘length of the elytra; base trifoveate, punctate. Addomen nar- 
rower and longer than the elytra, sides parallel, punctate; the 
base of the first two segments is impressed in the middle and 
bears obsolete carine. Legs short, tarsi short and thick. 
Habitat. California. (Lake Tahoe). 
E. Ltonerssimus, Brend. Pale testaceous, polished, impunc- 
tate, sparsely pubescent, very elongate-linear. Length 1.6 
mm.) ‘Plate X11.) Pigs pra. Plateceik, Fig. 115: 
Head, including the eyes, as long as wide, tempora slightly 
convergent, straight from the rounded posterior angles to the 
eyes; frontal tubercle prominent, rounded, the angular frontal 
margin crenate and elevated between the tubercles; occipital 
fovee large, sulcus straight to the arcuate frontal portion and 
fairly wide; enclosed surface convex, occiput emarginate and 
-impressed in the middle; eyes small, not prominent. Antenne 
one-half longer than the head, first and second joints cylindri- 
cal, longer than wide, as wide as the ninth; third to eighth 
very small, sub-globular; ninth not longer, tenth twice as 
wide and long as the ninth, the last wider than the tenth and 
one-fourth longer than wide, obliquely annulate near the sub- 
acute tip. Palpi, last joint as large as the second antennal 
