The Pselaphid^ of North America. 77 



as wide as the prothorax, across the tip one-half wider, and 

 equal to the length of the suture. Abdomen, across the second 

 segment, wider than the elytra. Legs rather long and stout, 

 the third tarsal joint three times longer than the second. 

 Habitat. Virginia. 



F. CAviFRONs, Casey. Brown, impunctate, polished; pubes- 

 cence long, coarse, and recumbent, especially long on the 

 tempora and abdomen. Length 1.9 mm. Plate XII., Fig. 

 126. 



Head, behind the large prominent eyes, nearly as wide as 

 the distance from the frontal margin to the base, which is 

 continuously arcuate with the tempora; sides, for a short dis- 

 tance before the eves, convergent, thence forming an obtuse 

 angle with the parallel antennal tuberculations; disk moder- 

 ately convex, deeply excavated between the antennal tuber- 

 cles, leaving the frontal margin very sharp in the middle; in 

 the eye line are two small, faintly impressed fovete, not quite 

 twice as distant from one another as from the eye. AntenncB 

 very pubescent, longer than the head and prothorax together; 

 first joint oblong-oval, as wide as the ninth joint, nearly twice 

 as long as wide, second oval, shorter, equal in thickness to the 

 first; third smallest, globular, fourth to tenth sub-equal, mon- 

 iliform, slightly and gradually increasing in size; the tenth is 

 rather wider than long, eleventh ovate, little wider than the 

 tenth, and one-half longer than wide. Last joint of the maxil- 

 lary palpi nearly fusiform, twice as long as wide. Prothorax 

 wider than the head, one-fifth wider than long just before the 

 middle, where the sides are evenly rounded; thence nearly 

 straight to the neck, and slightly sinuate toward the base; 

 neck half as wide as the base, which is about three-fourths of 

 the greatest width; disk with two small, slightly impressed 

 foveas before the middle, and the basal structure given in the 

 generic description, modified by the lateral carinas including 

 little more excavated space than one-half of the basal width. 

 Elytra longer than wide, slightly divergent at the sides, wddth 



