H. C. FALL 315 



Front with fine ocular lines which are rather near the ej-es; males nor- 

 mally entirely yellow, rarely with traces of spots, females more often 

 spotted (see table B). (California.) 



23. punctatus*, especially var. shasta 

 24. convictus* 



9. Antennae more slender and elongate, the 10th joint four to five times as 



long as wide. 



Eyes in cf separated by scarcely or but little more than the length of the 

 basal antennal joint; prothorax pale yellow with faint brown markings; 



size large (4 to 5 mm.). (Arizona.) 57. fortis 



Eyes in cf separated by about the length of the basal two joints of the 

 antennae; prothorax in great part black as in typical luridus; size 

 smaller (3 to 4 mm.). (Minnesota to Arizona.) 



150. luridus* var. festivus 

 Antennae less elongate, the 10th joint two to three times as long as wide, 

 size medium (less than 31 mm.); eyes in the cf separated by \\ to rather 

 more than \\ times the length of the basal antennal joint. 



Dull whitish yellow or dingy testaceous, thicklj' punctate, and more or 



less suffused with brown to fuscous, the standard spots sometimes fairly 



distinct but usually vaguely defined. 



Marginal interspace of el>i;ra not wider posteriorly than the adjacent 



one; punctures and shading fuscous or blackish, this color usually 



predominating. (Atlantic and Gulf States.) 



Legs bicolored 58. femoratus 



Legs entirely dark var. aquilonis 



Marginal interspace of elytra wider than the adjacent one (except 

 rarely), the punctures and shading brown, the pale yellowish white 

 or testaceous ground color predominant. (Florida.) 



59. characteristicus 



Rufo-testaceous, punctures and suffused areas reddish brown in the 9 , 



darker brown to fuscous in the cf (rarely so in the 9). (Mississippi 



Valley.) 61. impurus 



10. Front with ocular lines 11 



Front without ocular lines 12 



11. Eyes in c?' separated by about ^ the vertical width of their upper Iol)es; 



size larger (2.8 to 3.4 mm.). (Texas; Arizona.) 62. calidus 



Eyes in cf separated by a distance subequal to the vertical width of their 

 upper lobes; size smaller (2.3 to 3 mm.). (California; Arizona.) 



64. prosopis 



12. Marginal interspace of elytra numerously pimctate, size large (3.4 to 4.3 



mm.) (Texas to Arizona.) 65. wenzeli* 



Marginal interspace of elytra impunctate or nearly so 13 



13. Front claws of d^ obviously though not conspicuously enlargetl; size large 



(3.7 to 4.7 mm.) 14 



Front claws of cf not appreciably enlarged; size small or moderate (2.3 

 to 3.3 mm.) 15 



TRANS. AM. EXT. SOC, XLI. 



