210 CALIFORNIA ACADEMY OF SCIENCES. 



4. Schizogenius validus, sp, no v. 



Elongate, stouter than usual, polished black, autennas and legs brown. 

 Head and prothorax proportioned and sculptured above nearly as in S. 

 depressus. Elytra parallel in basal three-fifths, rather strongly striate, 

 striae distinctly punctate, the punctures becoming smaller toward the 

 apex, where they are nearly obsolete; third, fifth and seventh intervals 

 5-7 setigerous punctate. Legs about as usual; front tarsi strongly dilated 

 (at least in the male), joints 2-4 being nearly or quite twice as wide as 

 long, the fifth joint distinctly narrowed from base to apex; the claws one- 

 half the length of the joint. 



Length, 6.5 mm. 



Several examples taken by Dr. H. G. Griffith on the 

 Rio Verdi in central Arizona. 



This is our largest species. It most nearly resembles 

 in size and color S. seticollis, but is larger, with more 

 distinctly punctate elytral striae; the intervals with 

 fewer, and the thorax with but the two usual setigerous 

 punctures. The throat is distinctly less punctate than 

 usual, and the front tarsi are more widely dilated than 

 in any other species known to me. 



5. Schizogenius litigiosus, sp. nov. 



This name is suggested for still another form, occur- 

 ring in middle and northern California, which has 

 heretofore passed as S. pluripunciatus. It is really very 

 closely allied structurally to S. depressus, but seems to 

 differ constantly in its black color, in the antennae, 

 which are a trifle more slender, and in the sides of the 

 throat, which are a little more densely punctate. In a 

 series the thorax appears a little less broad than in S. 

 depressus. The differences aside from color are slight, 

 but the writer feels quite confident that it is not the 

 same as >S. depressus, which is always brown, and more 

 southern in habitat. 



