COLEOPTERA OF SOUTHERN CALIFORNIA. 215 



same tarsi in the male is more or less augulate near the middle in 

 T. salsamentus, never so in T. californicus. The raised line or crest at the 

 tip of the last ventral segment is stronger in T. salsamentus and projects 

 beyond the margin of the segment; less developed and terminating a little 

 before the apex in T. californicus. 



Specimens have been seat to Mr. Blanchard, who has 

 kindly compared them with T. sublcevis. He reports 

 that the latter species differs in being larger, broader 

 behind, sides of thorax not sinuate posteriorly, meso- 

 sternal keel less strongly punctured, and the apical pro- 

 cess of the last ventral less developed. 



All the specimens seen (about a dozen) have been 

 taken in April and July by Dr. Fenyes and the writer 

 from a small salt lake just back of the ocean beach at 

 Redondo. This lake is much salter than the ocean 

 itself. 



13. Berosus salinus, sp. nov. 



Very similar to B. infuscatus in form and size; surface highly polished 

 throughout in both sexes. Head black, with violaceous, green, and golden 

 reflections; punctures not dense, vertical earina nearly obsolete. Thorax 

 yellowish testaceous, nearly twice as wide as long; sides nearly straight 

 and slightly convergent in front; angles rounded; punctures sparse, finer 

 and coarser intermixed, a little closer at the sides. Elytra greenish testa- 

 ceous, finely striate, striso punctate; third interval with a confused line, 

 fifth with a regular series of punctures; the others nearly or quite impunc- 

 tate; sutural tips very slightly truncato-emarginate. Beneath piceous; 

 abdomen not cristate; fifth ventral with a broad lobe at the bottom of the 

 emargination; mesosternal crest acuminate; legs entirely pale, femora 

 finely punctate and pubescent in rather less than basal half. 



Length, 3.7-4.5 mm. 



Eedondo and Santa Barbara, in salt lake or pools. 



The maculation is almost entirely absent, there being 

 only a small divided thoracic spot, and a small diffuse 

 shade on the second and third intervals of the elytra at 

 one-third from the apex. The males have the first two 

 joints of the front tarsi rather narrowly dilated and 

 papillose beneath. By Horn's table B. salinus would be 



