Baring 407 



elytra at the somewhat tumid humeri are notably wider than the 

 thoracic base. Those at hand may be briefly defined as follows: 



Vestiture above and beneath pure white, the scales more oval and denser 

 beneath 2 



Vestiture throughout ochreous or pale yellowish, constituted as in the 

 preceding 4 



2 — Prothorax much shorter than wide. Form stouter than in any other 

 here brought to notice, black throughout; beak (cf) not quite half 

 as long as the body, arcuate, subcylindric, slightly more bent at 

 point of attachment, the antennae inserted very slightly beyond the 

 middle; prothorax nearly a third wider than long, the very evenly 

 arcuato-convergent sides sinuate at the subtubulate apex, which is 

 about half as wide as the base; punctures deep but very moderate 

 in size and well separated, the smooth line entire, even and rather 

 wide; scutellum nude, flaring, emarginate behind; elytra parabolic, 

 three-sevenths longer than wide, four-fifths longer than the pro- 

 thorax; striae rather coarse and deep; intervals finely, sparsely, 

 confusedly punctate and two to three times as wide as the striae, the 

 slender squamules in about two irregular series; abdomen un- 

 modified basally. Length (cf") 4.5 mm.; width 2.0 mm. Guate- 

 mala (Yzabal, — elev. 100 feet) scenica 



Prothorax as long as wide; body much narrower; lineate squamules of 

 the upper surface thicker and closer, much more conspicuous 3 



3 — Thoracic punctures rather coarse, deep and dense though scarcely in 

 mutual contact, the smooth median line narrow and well defined, 

 though not entire; basal lobe feeble; elytral striae moderately coarse, 

 the intervals loosely punctulate and subrugose though shining; 

 beak in the male much longer than the head and prothorax, thick, 

 arcuate and squamulose, the antennae inserted beyond the middle; 

 abdomen in that sex with a deep medio-basal impression clothed 

 more sparsely with smaller scales. Length (cf ) 4.0 mm.; width 

 1.65 mm. Mexico (Cuernavaca) compar 



Thoracic punctures not so coarse or close, rather more shallow, the 

 general surface between the very even white squamules more 

 polished, the median smooth line still narrower but subentire; basal 

 lobe larger and more developed, abrupt and rounded; elytra slightly 

 more elongate, the converging sides rather less arcuate, the striation 

 and sculpture almost similar, the white squamules less elongate and 

 somewhat more numerous; beak nearly similar; abdomen of the 

 male with a medio-basal, less squamose impression, which is more 

 elongate and not quite so well defined as in the preceding. Length 

 (cf) 4.2-4.6 mm.; width i. 68-1. 78 mm. Mexico (Iguala, in Guer- 

 rero), — Wickham. Three specimens retracta 



4 — Prothorax narrower, barely visibly wider than long, the sides feebly 

 converging and nearly straight to the middle, there broadly rounding 

 and thence moderately oblique and barely at all arcuate to the 

 unconstricted apex; basal lobe short, almost a third as wide as the 

 base and broadly rounded; punctures moderately coarse, deep and 



