398 H. C. FALL. 



II. 



Anterior tibiae of % with one spur; hind trochanters subaugulate. 



Elytra finely punctured, rather glossy, antennae stout. Length 18-23 mm. 



Hab. — New Mexico and Arizona geiitilis. 



Elytra scabrous, sub()i)aque, antennse slender. Length 12-23 mm. Hab. — 

 Southern California to Sacramento and Owen's Valley. 



nioereii$«. 

 Anterior tibiae of % with two spurs. 



Outer spur of hind tibiae short, stout, broader and concave at tip. 1. 



Outer spur rather slender, laminate at tip 2. 



1. Elytra black, finely scabrous: hind trochanters of % with an acute spine on 



the posterior edge near the tip. 

 Thorax more elongate, entirely black. Length 18-23 mm. Hab. — Southern 



California iiisperata. 



Thorax broader, subpentagonal, red, with a large basal spot and narrower 

 apical margin black. Length 11-21 mm. Hab. — Southern Cali- 

 fornia (Kern Co.), "Washington" (Fuchs) niolesta. 



Elytra reticulate ; hind trochanters of % not spined. 

 Thorax rather coarsely numerously punctate; elytra coarsely reticulate; 

 color black throughout. Length 11-25 mm. Hab. — Kansas, Colo- 

 rado, New Mexico reticulata- 



Thorax nearly smooth. 



Head (except in front), thorax and basal margin of elytra red; elytra 

 coarsely reticulate. Length 15-17 mm. Hab. — Arizona. 



agrestis. 



Head black, with large yellow frontal spot; thorax black, sides bordered 



with red ; elytra black, finely reticulate. Length 17-20 mm. 



Hab.—Tex-As cribrata. 



Elytra fulvous or luteous. 



Head and thorax black. Length 15-25 mm. iJafi.— Colorado, Texas. 



fulvipeunis. 

 Head, thorax and elytra luteous. Length 12-20 mm. Hab. — Texas. 



dichroa. 



2. Antennae mouiliforni, scarcely longer than the head and thorax; black, occi- 



put red, with narrow median black line; elytra obsoletely scab- 

 rous. Length 12.5-19 mm. Hab — Southern California. 



occipitalis. 

 Antennae slender, usually as long as or longer than half the body 3. 



3. Thorax as wide as or wider than long ; not or scarcely narrower than the 



head 4, 



Thorax longer than wide and more evidently narrower than the head 7. 



4. Head and thorax black, or of the same color as the elytra 5. 



Head or thorax, or both, more or less yellowish red (except difficilis) 6. 



5. Hind trochanters of % subangulate beneath ; black, without lustre. Length 



12-23 ram. //aft.— California (San Diego Co. to Lake and Planias 



Counties) iiiconiinoda. 



Hind trochanters of % oval. 

 Pubescence sparse, blackish, elytra usually with at most a few scattered 

 erect hairs, which are more noticeable toward the base. 



