The Pselaphid.^ of North America. 71 



arcuate groove; frontal margin nearly straight, the lateral 

 tubercle small, prominent; surface rather rough, punctured. 

 Antetiticp 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 th3 center; one-fourth the length from the base is 

 a deep, transverse, impression; lateral fovete deep, rounded, 

 not connected with the median impression. Elytra^ 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. Abdomen 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 carinfe. Legs short, tarsi short and thick. 

 Habitat. California. (Lake Tahoe). 



E. LONGissr.Mus, Brcnd. Pale testaceous, polished, impunc- 

 tate, sparsely pubescent, very elongate-linear. Length 1.6 

 mm. Plate XL, Fig. 114. Plate XII., 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 

 fovcce 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. Antennc^ 

 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 tw^ice 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 



