22 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 124 



sions shorter and shallower than in inopinus group; area lateral to 

 impressions slightly convex. 



Elytron. — Humerus strongly dentate. 



Legs. — Male hind femur robust, obtusely angulate along lower 

 posterior margin, or occasionally tuberculate; no setae on ventro- 

 lateral margins of last article of tarsus. 



Sixth abdominal sternum of male (fig. 8). — Three tubercules 

 present before apical margin; the right small and blunt, sometimes 

 connected with middle tubercule by low carina; middle large and 

 blunt; left tubercule of equal size, more abruptly denned; apical 

 edge between left and middle tubercules slightly emarginate; usually 

 vague impression in vicinity of right tubercule. 



Aedeagus (fig. 8). — Right paramere with basal portion bulbous, 

 then abruptly narrowed in about middle. Median lobe with tip rather 

 broad ; ventral surface with small unsclerotized area on left side. 



Length of body. — 6.5 to 8 mm. 



Types. — Pterostichus fuchsi, male, USNM!; Leptqferonia fugax, 

 male, USNM! 



Type-localities. — California, presumably Sonoma or Mendocino 

 County. 



Specimens examined. — 68. 



Distribution (fig. 36). — Specimens were collected from Russian 

 River, Sonoma County, north to eight miles west of Willits, Mendocino 

 County, Calif., and to an elevation of 900 feet. 



Remarks. — The holotype male of fugax Casey definitely belongs 

 to the taxon described above. Judging primarily by the frontal 

 impressions of the head (tarsal setae not examined) the holotype 

 of fuchsi belongs to this taxon also, rather than to the taxon described 

 as marinensis, new species. 



9. Pterostichus (Leptoferonia) marinensis, new species 



Figures 9, 36, 41 



Holotype male. — Characteristics of fuchsi group plus the following. 



Head. — Frontal impressions slightly curved, not noticeably re- 

 curved at posterior ends, not nearly as divergent as in fuchsi, forming 

 an angle of about 45°. 



Pronotum. — Sides at middle less arcuate than in fuchsi; sides 

 arcuate in basal third to immediately before hind angles; basal 

 transverse impression faint towards middle; longitudinal impressions 

 slightly shallower and shorter than in fuchsi. 



Elytron. — Humerus strongly dentate. 



Legs. — Hind femur robust but not obtusely angulate; small setae 

 present on ventrolateral margins of last article of tarsus. 



