IO4 MEMOIRS ON THE COLEOPTERA 



Marginal gutter not expanding posteriorly, the re flexed edge extremely 

 fine throughout the length 31 



28 Basal angles of the prothorax very obtuse and rounded. Body 

 abbreviated in form, convex, intense black throughout, the legs 

 and tarsi also deep black, the anterior and middle coxae partially 

 rufescent; antennae and palpi piceous, pale at base and apex respec- 

 tively; lustre moderately shining, the elytra (9) densely dull; 

 head rather more than three-fifths as wide as the prothorax, the 

 antennae slender; eyes prominent, the foveae very small and perforate; 

 prothorax more than one-half wider than long, the sides rounded, 

 less so and more converging than usual basally, the base evidently 

 wider than the strongly sinuate apex; surface with a portion of an 

 anterior impression at each side of the median line, which is fine, 

 coming far from attaining base or apex, the impressions large, shallow, 

 evenly concave and densely, evenly punctate, with fine punctures 

 sparsely scattered over the broadly convex surface thence to the 

 sides, the entire basal region alutaceous; elytra short, barely more 

 than a third longer than wide, oval, a fifth wider than the prothorax, 

 obtusely rounded at apex, the sides arcuate; sinus more transverse 

 than usual and vestigial, not at all distinct; striae rather fine, shallow 

 and abrupt, the inner striae and rather long scutellar slightly deeper, 

 the first bifurcating at base, the intervals flat; puncture at the 

 second stria near three-fifths; tarsi slender, the first joint of the 

 posterior shorter than the fifth. Length ( 9 ) 8.4 mm. ; width 3.3 mm. 

 Mexico (Salazar), Wickham *aterrimus n. sp. 



Basal angles less broadly rounded; upper surface much more shining, the 

 body more elongate 29 



29 Basal angles extremely obtuse, the tips moderately broadly rounded. 

 Body oblong, moderately conyex, black and shining, the under 

 surface picescent, the legs black, the tibiae and tarsi rufo-piceous; 

 antennae and trophi testaceous; head rather more than three-fifths 

 as wide as the prothorax, the eyes moderate, the foveae unusually 

 minute; antennae slender; prothorax slightly more than one-half 

 wider than long, the sides evenly and strongly arcuate and hence 

 especially arcuate basally, when compared with other species, re- 

 sulting in very obtuse basal angles; apex distinctly sinuate, barely 

 narrower than the base; surface very smooth and polished, the 

 anterior impression obtuse but rather deep medially, the foveae 

 linear, very feeble, slightly rugulose, the somewhat flattened shining 

 surface thence to the sides without evident punctures; lateral gutter 

 extremely feeble and inclined, obsolete at basal third; elytra less 

 than one-half longer than wide, slightly wider than the prothorax, 

 very obtuse behind, the sides feebly arcuate; sinus extremely feeble, 

 barely evident; striae very fine but deeply impressed, the scutellar 

 fine, rather long; intervals distinctly convex, the puncture near apical 

 fourth. Length (cf ) 9.0 mm.; width 3.4 mm. California (Tallac), 

 Fenyes mansuetus n. sp. 



Basal angles only moderately obtuse, the sides of the prothorax behind 

 the middle nearly straight 30 



30 Body small in size, oblong, moderately convex, black, rather shining, 



