50 JOHN B. SMITH. 



I have seen two specimens only ; easily distinguished by their bronze 

 color from the others in this group. 



A. tlirbnlentuin n. sp. — Black, often somewhat aeneous, and sometimes 

 slightly pnbescent : somewhat less obese than the preceding ; rostrum slender, 

 sometimes a little dilated near middle; head punctured. Thorax coarsely punc- 

 tured with a distinct impressed line. Elytral striae wide, shallow; punctures 

 large, intervals moderate, convex. Beneath puncture<l. Length 1.5 mm. 



Hah. — Middle States, Texas, Cal. 



Rather common and widely distributed. It varies somewhat in size, 

 color, and vestiture, being occasionally quite perceptibly pubescent. 



A. minor n. sp. — Differs from the preceding by the smaller size and the dis- 

 tinct pubescence; the thorax is wider at base, and has a deep lovea on dorsum; 

 the punctuation is coarse and dense; elytra somewhat more ovate, and slightly 

 less obese than usual. Length 1 mm. 

 Hah. — Cal., La. 



Group pyriforme, Plate 3. Figs. 3 and 18. 

 The species in this group are very readily recognized by their very 

 convex form and p.ear-like shape ; they number but three, and each is 

 aberrant in color, so that irrespective of the structural characters of the 

 group, the species can be recognized at sight. They are tabulated as 

 follows : 



Color black, legs red, 3 mm (lilatatuill. 



Color fuscous, with pale pubescence; elytra with a dark, naked, median fascia, 

 margined with dense paler pubescence, 2 — 3.5 mm lierciilanuin. 



Color black, elytra rufus, 1.5 — -2 mm pyrirorme. 



A, dilatattim n. sp. — Black legs except knees, and tarsi pale red or yellow; 

 pubescent. Head elongate, punctured, and rugose between tiie eyes, the latter not 

 prominent; rostrum greatly dilated near base; basal joint of antennae stout, but 

 little longer than second. Thorax densely and finely punctured, wider at base 

 than long; base bisinuate. Elytral striae distinct, punctures evident, intervals 

 moderate and flat. Beneath densely and finely punctured. Length 3 mm. 

 Hah. — Arizona. 



Unique in form and coloration, and therefore distinguishable at a 

 glance ; the form is the extreme of dilation of the elytra behind the 

 middle, while the base is comparatively narrow ; pear-shaped best ex- 

 presses it. Several specimens seen, and all from Arizona. 



A. Iierctllanum n. sp. — Piceous brown pubescent, with a naked darker 

 fascia on elytra. Head short, broad, finely punctate; eyes moderately prominent, 

 rostrum elongate, slender equal throughout^ antennae inserted close to base of 

 rostrum, first joint equalling second and third. Thorax about as long as broad, 

 sides sinuate, slightly cordate before middle, widest near base; above finely punc- 

 tured, with a short impressed dorsal line. Elytra humeri small; striae moderate, 

 evidently punctured ; intervals flat, scabrous: surface covered with a fine grevish 



