272 MEMOIRS ON THE COLEOPTEEA 



6 Color when mature black or piceous, the pronotum sometimes pale 

 and with a large central piceous area 7 



Color testaceous, the pronotum always clear and uniform, the facies 

 nearly as in Agonoderus but more depressed.- 20 



7 Species of the Atlantic and Sonoran regions, the pronotum always 

 uniform in color and generally black when mature 8 



Species of the Pacific faunal regions to the westward of the Rocky 

 Mountains 1 1 



8 Body notably slender in form 9 



Body stout and larger in size 10 



9 Color black, the thoracic edges diaphanously pale, the elytral suture 

 and the sides nubilously pallescent; under surface blackish-piceous, 

 the epipleura and legs pallid; head large, fully three-fourths as wide 

 as the prothorax, with large and very prominent eyes, the foveae 

 finely produced almost to the latter; antennae long, slender, blackish, 

 the basal joint much, the second slightly, paler; prothorax barely a 

 third wider than long, widest before the middle, the sides broadly, 

 subevenly rounded, feebly converging basally, the apex feebly sinuate 

 and as wide as the base, which is transverse medially, the angles 

 broadly rounded; surface strongly but finely reflexed at the sides, 

 equally from apex to base, the foveae large, vague, extremely feebly 

 impressed and with rather close-set fine punctures, the stria extremely 

 fine, incomplete; elytra long, more than one-half longer than wide, 

 two-fifths wider than the prothorax, parallel, with very feebly 

 arcuate sides and obtuse apex, the sinus vestigial; striae rather deeply 

 impressed, deeper and coarser apically a remarkable difference 

 when compared with such species as unicolor and conjiinctus, as well 

 as the genus Stenocellns; intervals broadly convex, very narrow 

 apically; scutellar stria very long; discal puncture strong, at two- 

 thirds; hind tarsi long and slender, the first and fifth joints equal in 

 length; middle tarsi (cf) slender and filiform. Length (cf 9 ) 5-O- 

 6.0 mm.; width 1.8-2.0 mm. Rhode Island to Florida, Kansas and 

 western Texas (El Paso). Extremely abundant. [Feronia ochro- 

 pezus Say; 5. convexicollis Lee.; IS. gracilis Csy. (Arizona)]. 



ochropezus Say 



Color obscure testaceous, the head blackish, the pronotum piceous; under 

 surface and legs dark rufous; head much smaller than in ochropezus 

 and with less developed and less prominent eyes; antennae slender, 

 fusco-testaceous; prothorax shorter, two-fifths wider than long, 

 widest slightly before the middle, the sides broadly, subevenly 

 rounded; apex feebly sinuate and subequal to the base, the basal 

 angles much less broadly rounded than in the preceding; surface 

 more finely and feebly reflexed at the sides throughout the length, 

 the foveae less broad and more oblong, rather more impressed but with 

 only five or six punctures, separated from the sides by a feeble smooth 

 convexity; median stria very fine, feeble, incomplete; elytra uni- 

 formly fusco-testaceous in color, shorter than in the preceding and 

 with much finer striae, not one-half longer than wide and about a 

 fourth wider than the prothorax, the apices obliquely subtruncate; 

 striae very fine, coarse and deep at apex, the scutellar rather long 



