The Pselaphid.^ of North America. 6i 



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 verv small median 

 fovea. Elytra one-half longer, across the high shoulders shght- 

 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. Abdomen with the 

 first and second dorsals bicarinate in the middle, carinas includ- 

 ing one-fourth of the segmental width. Legs short, vellow. 

 '_ with the last ventral nearly circular and an inconspicuous 

 transverse impression at the base of the penultimate segment. 



Habitat. Linn Countv, Iowa. 



Very distinct by the small head and the form and sculpture 

 of the prothorax. 



E. ROTUNDicoLLis, Bveud. Piceous brown througrhout, leers 

 paler, pubescence fine, not dense: stature robust, compact. 

 Length 1.33 mm. Plate XI., Fig. 113. Plate XII., Fig. 

 116. 



Head narrower than the prothorax, one-fifth wider than long, 

 tempora prominent, angulate with the base, nearlv parallel be- 

 hind the moderately prominent eyes; frontal margin two-thirds 

 as wide as the base, which latter is emarginate and visiblv 

 impressed in the middle of the occiput; the outlines of the head 

 resemble those of E. conjiiiens; occipital foveae 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. ^4w/£-;^«iP rather long, 

 reaching the transverse thoracic sulcus; first and second ioints 

 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 



