The Pselaphid^ of North America. 79 



segment is shorter than any one of the succeeding segments, 

 and bears on each side of the middle a transverse pubescent 

 line. Legs short, stronger than those of the preceding spe- 

 cies. 



Habitat. Middle California. 



F. PARViCEPS, McBkUn. Dark brown. Length 2 mm. 



Head wider than long, much smaller than in any of the pre- 

 ceding species; the frontal impression is more transverse, 

 the fovccc not so well impressed and situated in a line with the 

 anterior limits of the eyes, tempora arcuate. Antennce longer 

 than the head and prothorax, the basal joint longer than in the 

 preceding species, the ninth and tenth joints transverse. 

 Prothorax widest behind the middle; the fove« before the 

 middle are near together, not connected with the transverse 

 basal impression. Elytra with the sides straight, divergent, 

 half as long again as the prothorax, shoulders not prominent. 

 Abdomen with the sides divergent, the first segment apparently 

 half as long as the second. In the living specimen this pro- 

 portion may possibly be different. 



Habitat. British Columbia. 



This description is taken from a drawing made thirty 3'ears 

 ago from a specimen in Dr. Leconte's cabinet. We do not 

 recollect whether or not it has the transverse pubescent line 

 on the first abdominal segment. 



F. isABELL.^, Lee. Black, elytra, legs, and antennae red. 

 Length 2 mm. 



Head large, as wide as long, the frontal fove^e large and 

 deep. AntenncB as long as the head and prothorax together, 

 first joint oblong oval; second of the same form, as long as 

 the width of the first; third smallest, as long as wide; fourth 

 to sixth little longer than wide, one-half wider than the third; 

 seventh to tenth gradually wider, not longer, the tenth being 

 twice as wide as the eighth; the last joint is wider than the 

 tenth, and one-half longer than wide, oval. Prothorax of the 

 same form as in F. cavifrons., without discal foveol«, the basal 



