3i6 MEMOIRS ON THE COLEOPTERA 



very short and inconspicuous; third antennal joint nearly always- 

 having a large fulvous spot, homologous with the basal pale part 

 of the succeeding joints to the apex; joints seven and eight in the 

 female almost wholly dark in color as in the preceding 2 



2 Pale spot of the third antennal joint always large and well developed, 

 extending from a little beyond the middle of the joint nearly to the 

 base; normal condition of the elytral pale spots separated, the suf- 

 fused condition exceptional; size larger 3 



Pale spot of the third joint always small, sometimes obsolete; normal 

 condition of the elytra almost entirely pale, though similarly black 

 at base; size somewhat smaller 5 



3 Body narrower in form, pale testaceous in color, the elytra with the 

 dark areas, which are normally black, well separating the posterior 

 spots from the broad anterior band in specimens at hand; scutellum 

 testaceous; prothorax relatively much smaller than usual; irregular 

 punctures of the male prosternum well separated. Length (cf, 9 ) 

 20.0-22.0 mm.; width 7.3-7.8 mm. New Mexico, Snow. 



debilicollis n. sp, 



Body broader in form, deep black throughout, except the pale elytral 

 and antennal maculation, the abdomen as usual pallescent apically.4 



4 Hind body suboblong, only slightly narrowed from the base, the 

 elytra broadly rounded at apex; scutellum not more than half as 

 wide as the distance thence to the humeri; smooth portion of the 

 mesosternum (9 ) longer than wide, the eighth antennal joint (9 ) 

 barely one-half longer than wide. Length (cf,9) 27.5-28.0 mm.; 

 width 9.5-10.0 mm. Texas, Dunn virens n. sp. 



Hind body strongly cuneiform, very rapidly narrowed from the base, the 

 elytra each very narrowly subtruncate at apex; scutellum more than 

 half as wide as the distance thence to the humeri; smooth portion 

 of the mesosternum rather wider than long; eighth antennal joint 

 (9 ) nearly twice as long as wide. Length (9 ) 24.8 mm.; width 9.0 

 mm. Lower California peninsularis n. sp. 



5 Form somewhat narrow, the elytra moderately narrowed from the 

 base, more so than in virens but less than in peninsularis, the pale 

 elytra sometimes having a small marginal maculation behind, and 

 the suture another at, the middle, showing derivation from the 

 quadrimaculate type black to piceous-black; pale spot of the third 

 antennal joint very slightly behind the middle and more toward the 

 outer side; scutellum rather less than half as wide as the space thence 

 to the humeri; punctures of the male prosternum small and widely 

 separated, the median smooth line very much broader and less 

 sharply denned than in any of the preceding. Length (c?) 20.0- 

 24.0 mm.; width 6.7-8.0 mm. California (near Yuma). 



reductus n. sp. 



Three of the males of reductus before me have the long slender 

 mandibles tolerably uniform and of the usual apically inflexed form, 

 but the fourth male is anomalous, having mandibles that differ 

 but little from those of the usual female type, being small, thick, 



