38 Synojjsis of the Family Pselaphidx. 



E. cavifrons, Lee. Thorax with three basal grooves connected by an angulated 

 sulcus and a small discal groove. Front concave. Long 1.0 

 m. m. Hab. — Southern States. 



E. arcuatus, Lee. Thorax with three grooves connected by an angulated sulcus, 

 the disk concave. Long 1.0 ni. m. Hab. — Northern States. 

 -:■:-:•:- Body depressed. 



E. linearis, Lee. Thorax with two grooves connected by a transverse sulcus 

 and a longitudinal discal sulcus. Occiput impressed. Long 

 1.7 m. m. Hab. — Southern States. 



E- interruptus, Lee. Thorax with three grooves connected by an angulated 

 sulcus, from the lateral grooves running out forwards in the 

 margin, and an oblong discal groove. Occiput entire. Long 

 1.6 m. m. Hab. — Southern States. 



E. confluens. Lee. Thorax punctulate, with three grooves connected by an an- 

 gulated sulcus and an anteriorly abbreviated longitudinal sul- 

 cus on the disk. Occiput impressed. Long 1.6 m. m. Hab. — 

 Eastern States. 



E. difficilis, Lee. Thorax with two lateral grooves connected by an arcuate 

 sulcus and a central discal groove. Occiput impressed. Long 

 1.3 m. m. Hab. — Atlantic States. 



E. pumilus, Lee. Thorax with two lateral grooves by a nearly straight sulcus 

 and an oblong discal groove. Elytra, each with a round groove 

 behind the middle. Occiput entire. Long 0.5 m. m. Hab. — 

 Southern States. 



E. crinitus, Brendel. Thorax with three grooves connected by an arcuate sul- 

 cus, disk smooth convex. Occiput entire. Long 1.4 m. m. 

 Hab. — Illinois. 



E. ruflceps, Lee. Thorax with two lateral grooves connected by an arcuate sul- 



cus, disk smooth convex. Occijmt entire. Long 0.5 m. m. 

 Hab. — Southern States. 



RHEXITJS, Lee. 

 Head and thorax transverse. Antennaa geniculate. 

 It. insculptus, Lee. Thorax with two lateral, isolated grooves and a longitudi- 

 nal sulcus. Long 1.6 m. m. Hab. — Atlantic States. 



B. — Tarsi with two equal claws. 

 FARONUS, Aube. 

 Abdomen flexible, six-jointed, last joint retractile. Antennae moni- 

 liform. 



F. Tolulae, Lee. Thorax with three isolated grooves. Head with three grooves. 



Long 2.0 m. m. Hab. — Southern States. 



F. Isabellse, Lee. Thorax with two lateral grooves and a basal transverse im- 

 pression in the middle. Head with three grooves. Hab. — 

 Southern States. 



F. parviceps, Lee. Thorax with two lateral grooves and a basal transverse im- 

 pression in the middle. Head with two grooves near the fron- 

 tal margin, and a triangular impression on the frontal margin. 

 Long 2.0 m. m. Hab. — Russian America. 



