no. 3049 LEPTOFERONIA — HACKER 23 



Sixth abdominal sternum of male (fig. 9). — Low carina before 

 evenly arcuate apical edge; two sharp tubercules at ends of carina; 

 no distinct impression on face. 



Aedeagus (fig. 9). — Right paramere gradually tapering; a slight 

 bend at about middle. Median lobe with ventral surface flat; unsclero- 

 tized area on left side larger than in juchsi; distal portion and tip 

 narrower than juchsi and curved to left. Internal sac with lips of 

 gonopore weakly sclerotized, but apparently no tooth present. 



Length of body. — 7.5 mm. 



Allotype female. — Same as holotype except for usual female 

 differences; hind femur noticeably less robust; length of body 7.0 mm. 



Type.— USNM 69602. 



Type-locality. — Two miles northwest of Pan Toll Camp, Marin 

 County, Calif. 



Specimens examined. — 78. 



Distribution (fig. 36). — Holotype, male, allotype, female, 2 miles 

 northwest of Pan Toll Camp, west slope of Mount Tamalpais, elev. 

 1700 ft., Marin County, Calif., July 11, 1965, H. A. Hacker. Also 

 the following para types: 10 males, 6 females, same data as holotype; 

 3 males, 1 female, same data as holotype except Feb. 4, 1961; 4 males, 

 3 females, 3 miles northwest of Pan Toll Camp. Fifty other speci- 

 mens were collected from other localities in the southern half of 

 Marin County. 



Remarks. — Aside from male characteristics, the frontal impressions 

 of the head and the tarsal setae provide the most distinctive differences 

 between marinensis and juchsi. There is not much forested land in 

 the northern half of Marin County; marinensis and juchsi currently 

 may not be in contact with each other. 



10. Pterostichus (Leptoferonia) lobatus, new species 



Figures 10, 37, 41 



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



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

 curved at posterior ends, forming an angle of about 45°. 



Pronotum. — Sides arcuate in middle, oblique, then sinuate im- 

 mediately before hind angles; longitudinal impressions longer and 

 more sharply impressed than in juchsi. 



Elytron. — Side arcuate; humerus sloping and not strongly dentate; 

 intervals slightly convex; only faintly microreticulate. 



Legs. — Hind femur somewhat robust, not obtusely angulate; no 

 setae on ventrolateral margins of last article of tarsus. 



Sixth abdominal sternum of male (fig. 10). — A long, narrow, 

 abruptly truncate lobe extending beyond edge, directed downward; 



