44 CALIFORNIA ACADEMY OF SCIENCES. 



anthrax and audax, common nearly everywhere along 

 streams, the latter being our most common species: 

 rapax, not rare at Yuma in July. Two examples of 

 rufotestaceus have occurred at Pomona. I have seen a 

 specimen of fiavicauda from the northern part of the 

 State. T. falli occurs in the middle and northern 

 Sierras (Lake Tahoe and Siskiyou). 



Pericompsus. — A few examples of P. sellatus taken 

 along the banks of the Colorado River at Yuma in July. 



Mr. Hayward writes me that Pericompsus will be 

 merged into Tachys in his forthcoming revision. 



Patrobus. — P. catifornicus is northern. 



Pogonus. — P. planatus is reported from " Cal." 

 (Horn), probably from the desert region of the south- 

 east. 



Trechus. — T. barbarce occurs at Santa Barbara: po- 

 monce, rare, at Pomona and Pasadena in foot-hill canons; 

 October, January, March. T. chalybeus and T. ovipennis 

 are both recorded from California; the former is north- 

 ern, the latter middle and northern. 



Pterostichus. — The first division of the genus, viz., 

 those species without dorsal puncture on the elytra, is 

 well represented, and several are yet undescribed. P. 

 ater occurs in the mountains north of San Bernardino, 

 and probably throughout the higher Sierras: vicinus is 

 common in the Sierras and throughout the region to 

 the west: gracilior appears to be confined to the moun- 

 tains: inerinis, not common, in the foot-hill canons of 

 the San Gabriel Range: isabellce and congestus, common 

 and widely diffused: menetriesii, Santa Rosa Island: 

 Icetulus, one example from Santa Barbara: scitulus, not 

 common: subcordatus, plentiful along the Colorado 



