SCAPTOLENTJS. 559 



a 6 . Prothoracic villosity dense ; elytra deeply sulcate ; prothorax 



dilated anteriorly villosus. 



b e . Prothoracic villosity rather sparse ; elytra feebly sulcate ; 



prothorax less dilated anteriorly mouffleti. 



b 5 . Elytra moderately elongate, sulcate and distinctly costate ; pro- 

 thorax not dilated anteriorly pueblce. 



d*. Head and prothorax clothed with long intermixed fuscous and 

 fulvous hairs, the breast with fulvous hairs ; prothorax dilated 



anteriorly and constricted behind candezei. 



fc"'. Elytra more parallel, very little narrowed behind ; prothorax much 

 narrower than the elytra, constricted behind, with long narrow hind 

 angles ; head and prothorax clothed with long blackish hairs, the 



breast with fulvous hairs nigriceps. 



/". Prothorax very short, twice as broad as long, much narrower than the 

 elytra. 

 /"'. Head and prothorax sparsely clothed with very long, erect, inter- 

 mixed brownish and fulvous hairs, the breast with paler hairs; 

 elytra elongate, gradually narrowing behind, distinctly striate ; 



antennae rather stout, moderately long brevicollis. 



g"'. Head and prothorax sparsely clothed with moderately long, semi- 

 erect, fuscous hairs, the breast also with fuscous hairs ; elytra 

 elongate, subparallel, not striate ; antennae elongate. 

 e 4 . Apical joint of the maxillary palpi longer than the preceding joint; 

 elytra rather finely punctate, with scattered coarse impressions at 



the apex gehini. 



/*. Apical two joints of the maxillary palpi elongate, equal in length; 

 elytra more coarsely punctured, without coarser impressions at 



the apex ruficornis. 



h' . Prothorax clothed with short, decumbent, pallid or fulvous hairs, not 

 twice as broad as long, dilated anteriorly. 

 g". Prothorax distinctly narrower than the elytra, the latter attenuate. 



h'". Elytra very deeply sulcate revestitus. 



i" ! . Elytra shallowly sulcate subapicalis. 



h". Prothorax nearly or quite as broad as the elytra, 

 y". Elytra very elongate and subparallel ; femora luteous ; prothorax 



and elytra fulvous-brown chevrolati. 



k"'. Elytra less elongate, more or less narrowed behind. 



g*. Femora infuscate rubviventris. 



h*. Femora luteous or flavous. 



c 5 . Body robust ; elytra rather strongly attenuate ; prothorax and 



elytra castaneous guerini. 



d 5 . Body more slender. 



c 6 . Elytra comparatively short ; prothorax and elytra more or 

 less castaneous, the latter sometimes blackish at the apex. 



