June, 1898.] Casey : North American Coleoptera. 89 



prothorax, the sides nearly straight and distinctly convergent, the apex narrowly 

 rounded ; punctures rather sparse and very minute, the surface feebly rugulose. 

 Length 1. 3 mm.; width 0.53 mm. Louisiana (Morgan City). 



laminifrons, sp. nov. 



6 — Thoracic process of (he male abruptly formed 7 



Thoracic process gradually formed, its sides merging gradually and obliquely into the 

 sides of the prothorax ; thoracic punctures quite dense 9> 



7 — Elytral punctures rather coarse and closer ; thoracic process one- half as wide as the 

 elytra. Body rather stout, blackish, the elytra piceous ; legs and oral organs pale ; 

 lustre moderately shiniDg ; head and eyes modera'ely developed ; clypeal process 

 very broad, only moderate in length, almost transversely truncate ; prothorax only 

 slightly wider than long, the sides parallel and broadly arcuate ; apical process 

 very broad, deeply sinuate ; punctures strong and close-set ; elytra quite distinctly 

 narrower than the prothojax and scarcely more than one-half longer; one-half 

 longer than wide, the sides parallel ; apex broadly rounded ; surface feebly rugu- 

 lose, strongly punctured, less closely than the prothorax. Length 1.4- 1.7 mm ; 

 width 0.55-0.7 mm. California (southern) grossulum, sp. nov. 



Elytral punctures fine but distinct, rather sparse, the thoracic process much less than 

 one-half as wide as the elytra 8 



Thoracic punctures close-set ; angles of the clypeal process scarcely at all rounded. 

 Blackish, the elytral punctures generally very feebly subserial in arrangement. 

 California (especially northern coast regions) californicum Csy. 



Thoracic punctures sparse ; angles of the clypeal process rounded. Body evenly 

 cylindric, moderately shining, more or less rufo-testacecus in color, the elytra 

 sometimes blackish toward base ; head and eyes moderate, the clypeal process 

 moderately strong, with the sides rather strongly convergent and the apex broadly 

 sinuate ; prothorax slightly transverse, the sides parallel and almost straight, 

 rounding anteriorly, the process rather feebly developed, sinuate at apex ; elytra 

 scarcely one-half longer than wide, as wide as the prothorax and three- fifths 

 longer, the sides parallel and straight, the apex broadly rounded ; punctures fine 

 and sparse, the surface almost smooth. Length I 2 mm. ; width 0.5 mm. Cal- 

 ifornia ( Sonoma Co. )* discolor, sp. nov. 



9 — Narrowly cylindric, blackish, the eljtra rufescent at tip ; legs, trophi and antennre 

 pale ; surface moderately shining ; head well developed, the clypeus moderate 

 in length, with the sides strongl) convergent, the apex broadly sinuato-tiuncate 

 and the angles blunt ; piothorax but little wider than long, the sides subparallel 

 and very slightly arcuate ; process rather short, sinuate at tip ; elytra fully one- 

 half longer than wide, as wide as the prothorax and fully three fourths longer, 

 somewhat parabolically rounded at tip, the punctures fine but strong, but little 

 smaller than those of the prothorax and much less close- set. Length I.I— 1.3. 

 mm.; width 0.4-0 5 mm. California (Los Angeles)., .convergens, sp. nov. 



10 — Moderately stout, piceous to blackish in color, with the elytra paler ; legs, trophi 

 and antennas pale, the club dusky; surface polished; head well developed, 

 broadly concave, ihe clypeus only moderately re flexed, the apex broadly truncate; 

 prothorax but little wider than long, the sides subparallel and broadly, distinctly 

 arcuate ; process rather short, lamelliform, with a triangular incisure at the mid- 

 dle, the process abruptly formed ; punctures very fine and sparse ; elytra short,. 



