28 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 124 



Remarks. — Casey described his types of humilis and larvalis as 

 testaceous; mature specimens are dark rufous. Aside from male 

 characteristics, humilis can be distinguished from mattolensis by the 

 following: elytral humeri smaller and more rounded, area lateral to 

 longitudinal impressions on pronotum usually at least partly flat. 



14. Pterostichus (Leptoferonia) angustus (Dejean) 



Figures 14, 31, 38 



Feronia angusta Dejean, 182S, p. 328. — LeConte, 1857, p. 8. 



Pterostichus angustus (Dejean). — LeConte, 1852, p. 239; 1863a, p. 8; 1S73, p. 

 303.— Schaeffer, 1910, p. 392.— Casey, 1913, p. 126.— Van Dyke, 1925, 

 p. 75.— Csiki, 1930, p. 582.— Hatch, 1936, p. 704. 



Leptoferonia angustus (Dejean). — Casey, 1918, p. 321, 337. — Leng, 1920, p. 56. 



Pterostichus linearis LeConte, 1852, p. 239; 1873, p. 303 [fide synonymy of angustus 

 Dejean].— Casey, 1913, p. 126.— Csiki, 1930, p. 582. 



Pterostichus crucialis Casey, 1913, p. 126. — Van Dyke, 1925, p. 75 [fide synon- 

 ymy of angustus Dejean]. — Csiki, 1930, p. 582. — Hatch, 1936, p. 704. 



Leptoferonia crucialis (Casey). — Casey, 1918, p. 337. — Leng, 1920, p. 56. 



Color of body. — Rufous. 



Head. — Eyes smaller than in inopinus group, though longer than 

 length of second antennal segment, not prominent; frontal impressions 

 subparallel in basal half, then diverging; microreticulate. 



Pronotum. — Sides in basal third broadly sinuate; hind angles 

 slightly reflexed, rectangular; apical angles prominent, more so than 

 in hatchi; posterior pair of setiferous punctures at angles; basal trans- 

 verse impression weak or absent in middle; base bisinuate; inner 

 pair of longitudinal impressions from distinctly impressed lines to 

 shallow depressions; outer longitudinal impressions similarly variable, 

 sometimes reaching basal margin, rarely absent; area between im- 

 pressions and lateral margin slightly tumid; distinct midline often 

 reaching basal margin; disc more convex than in hatchi; disc partly 

 microreticulate. 



Elytron. — Humerus strongly dentate; scutellar stria present; 

 scutellar puncture present on both elytra in only a third of sample 

 from north and east of San Francisco Bay; sides subparallel in middle 

 third; setiferous punctures on eighth stria consisting of six anterior, 

 no intermediate, sLx or occasionally five in posterior series; two setae 

 at posterior end of seventh stria; microreticulate. 



Ventral surface. — Sparse punctures on mesepisternum in speci- 

 mens from south and east of San Francisco Bay, additional punctures 

 on mesepisternum and metepisternum in others. 



Legs. — Hind trochanter with tip pointed, about half the length of 

 hind femur; hind femur not particularly robust; setae usually absent 

 on ventrolateral margins of last article of tarsus in specimens from 

 north of San Francisco Bay, present in southern specimens; males 



