30 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 124 



it was collected by Eschscholtz while he was on a sailing expedition. 

 Dejean's description seems to fit the coastal species described above 

 better than the Sierran hatchi, new species, or stapedius, new species. 

 LeConte (1863a) and Chaudoir considered linearis LeConte to be a 

 synonym of angustus Dejean. Hatch (1936) and Van Dyke confused 

 this coastal species with the Sierran species. Hatch's (1936) description 

 of "angustus" is drawn, at least in part, from specimens of hatchi. 



The hatchi Group 



The hatchi group includes two species, Pterostichus hatchi, new 

 species, and P. stapedius, new species. The aedeagi of the two look 

 very different superficially. Pterostichus stapedius, new species, also 

 differs from P. hatchi, new species, in having the pronotum and 

 elytra more convex and in having more numerous punctures on the 

 ventral surface of the thorax. In the past, the two have been confused 

 with the species that occurs in the California Coast Range and that 

 is described in this paper as angustus. Dejean's angusta holotype 

 apparently is lost. It was collected by Eschscholtz from "Calif ornie" 

 and probably was collected from the coast rather than from the 

 Sierra Nevada in the interior, where P. hatchi, new species, and 

 P. stapedius, new species, occur. Dejean's original description could 

 apply to the Sierran species, however. The hatchi species group 

 differs from the coastal species in several respects including a broader 

 body outline and more protruding eyes. The members of the hatchi 

 group share the characteristics listed below. 



Color of body. — Dark rufous. 



Head. — Eyes protruding, but smaller than in inopinus group; 

 frontal impressions somewhat curved, diverging posteriorly; a faint 

 triangular impression on front; microreticulate. 



Pronotum. — Sides arcuate in middle, then broadly sinuate and 

 subparallel, or slightly divergent, somewhat before rectangular hind 

 angles; posterior pair of setiferous punctures at angles; base bisinuate; 

 weak basal transverse impression absent between inner pair of longi- 

 tudinal impressions; outer pair of impressions usually faint, some- 

 times deep and fairly long, sometimes absent; deep midline not 

 reaching either margin; disc partly microreticulate; sometimes vague 

 longitudinal wrinkles in vicinity of midline toward base. 



Elytron. — Humerus nearly rectangular; humeral dentation large 

 and acute; scutellar stria normally short, sometimes complete, some- 

 times absent; scutellar puncture absent; setiferous punctures on 

 eighth stria consisting of six in anterior series, usually no intermediate, 

 usually six in posterior series; two setae at posterior end of seventh 

 stria; intervals convex except toward base; microreticulate. 



