THe PsELAPHIDZ OF NorTH AMERICA. 61 
angles, broadly arcuate, as long as the width of the head, the 
prominent eyes included, and less than one-fourth wider; disk 
nearly flat in the middle, an oblong fovea before the middle 
and large lateral fovea just behind the middle, connected by a 
fine, straight sulcus, running through a very small median 
fovea. E/ytra one-half longer, across the high shoulders slight- 
ly wider, across the tip one-fourth wider than the prothorax, 
sides behind the middle nearly parallel; disk flat, depressed, 
with declivous sides and tip, very densely pubescent, discal 
lines two-thirds of the length, very sharp and fine, sutural lines 
the same and entire; basal punctures three. Addomen with the 
first and second dorsals bicarinate in the middle, carinz includ- 
ing one-fourth of the segmental width. Legs short, yellow. 
4 with the last ventral nearly circular and an inconspicuous 
transverse impression at the base of the penultimate segment. 
Habitat. Linn County, Iowa. 
Very distinct by the small head and the form and sculpture 
of the prothorax. 
E. RoTuNDICOLLIS, Brend. Piceous brown throughout, legs 
paler, pubescence fine, not dense; stature robust, compact. 
Length 1.33 mm. Plate XI., Fig. 113. Plate XII., Fig. 
116. 
ffead narrower than the prothorax, one-fifth wider than long, 
tempora prominent, angulate with the base, nearly parallel be- 
hind the moderately prominent eyes; frontal margin two-thirds 
as wide as the base, which latter is emarginate and visibly 
impressed in the middle of the occiput; the outlines of the head 
resemble those of &. confluens; occipital fovee large, in a line 
with the posterior margin of the eyes, circumambient sulcus 
deep, parallel to the sides of the head, the frontal part transverse, 
deeper; frontal margin thin and straight. Aztenne rather long, 
reaching the transverse thoracic sulcus; first and second joints 
larger, oblong; third to sixth equal, globular, small; seventh 
to tenth gradually increasing in length and width, transverse; 
tenth four times wider, and twice as long as the seventh, the 
last ovate, truncate at the base, wider than the tenth, one-half 
