BEVISIOISr OF LISTKOCHELUS — SAYLOR 67 



29 (28). Hind tibia with short sparse spines, these never more, and 



usually less, than one-third length of tibia; first segment 

 of hind tarsus very suddenly widened at apex (fig. 4, /) ; 



hind tarsus sparsely hairy falsa (LeConte) (part) 



Hind tibia with long, usually rather dense and fine hair on 

 inner side, this hair often one-half as long as or longer 

 than tibia; first segment of hind tarsus gradually widened 

 from near base, and usually densely hairy, especially near 

 base 30 



30 i,29). First segment of front tarsus with very long spinelike pro- 



jection, width of segment at apex one-half or more ita 

 length (fig. 3, n), hind tarsus with first segment always 

 expanded and from two to two and one-half times as long 



as wide 31 



First segment of front tarsus with a small inner spine, 

 width not more than one-third its length and usually 

 less (fig. 3, I); hind tarsus with first segment usually but 

 little expanded and not less than three times as long as 

 wide at apex (genitalia fig. 9, k-n) fimbripes (LeConte) (part) 



31 (30). Aedeagus in lateral view with two teeth on lower margin 



(fig. 11, a-d) koehleriana, new species 



Aedeagus in lateral view with a single bluntly rounded 

 lobe in place of the two approximate teeth (fig. 11, e~g). 



neomexicana, new species 



32 (28). Abdomen transversely tumid, often markedly so (fig. 2, c); 



hind tibia with moderately long and often rather dense 



and fine hairs (except in parilis) 33 



Abdomen flat or nearly so (fig. 2, b) ; hind tibia with moder- 

 ately coarse and sparse hairs, usually without long or 

 fine hairs (except peninsularis) 35 



33 (32). Thorax strongly pruinose; entire dorsal surface with mod- 



erately long and erect hair (genitalia fig. 11, h-k). 



opacicollis (Horn) 

 Thorax shining, not pruinose; pilose above but thorax in 



great part glabrous, especially on disk 34 



34 (33). Hind tarsus and tibia with thickened, almost spinelike 



hairs, without any long fine cilia; thorax and pygidium 



strongly shining (genitalia fig. 11, a-r) parilis (Bates) 



Hind tarsus and tibia with long, often dense, fine cilia; 

 thorax and pygidium dull to moderately shining (geni- 

 talia fig. 9, k-n) fimbripes (LeConte) (part) 



35 (32), Elytra with very short and dense erect hairs; thorax very 



densely, coarsely, and entirely, punctate; clypeus trape- 

 zoidal, angles sharp and entire apical margin reflexed 



(genitalia fig. 3, h-i) peninsularis, new species 



Elytra with very sparse, short, procumbent hair, or glab- 

 rous; thorax moderately punctured; clypeus with angles 

 noticeably rounded 36 



36 (35). All claws with moderately strong submedian tooth 37 



All claws without any larger intercalated tooth (except 



front outer claw in texensis) 39 



37 (36). Thorax rufotestaceous, moderately sparsely punctate, 



with large median impunctate area; lateral margins of 

 219855 — 40 2 



