470 Memoirs on the Coleoptera 



sides, the median smooth line wider centrally, subentire; scutellum very 

 small; elytra more than three-fourths longer than wide, very narrowly 

 subparabolic, barely wider than the prothorax and three-fourths longer, 

 the humeri scarcely at all prominent; striae deep and groove-like, moder- 

 ately coarse, the intervals twice as wide as the grooves to somewhat less, 

 with single series of moderate though strong and widely spaced punc- 

 tures, the punctures beneath moderate and sparse; anterior coxae separ- 

 ated by more than their own width. Length (9) 3.0 mm.; width 0.8 

 mm. Oregon (Huntington). One specimen. 



Not closely allied to any other species and distinguishable readily 

 by its slender, subparallel form and other characters noted above. 

 It belongs to the nasutus section however, 



*Anacentrus guatemalensis n. sp. — Elongate-oval, polished and con- 

 vex, piceous-black, the elytra less dark than the prothorax; scales above 

 yellowish and conspicuous though sparse along the sides of the pronotum, 

 in a small denser spot at each side of the base and on the basal lobe, 

 elsewhere wanting; on the elytra they are slender, darker and sparse in 

 single interstitial lines and more scale-like and paler, though slender and 

 sparse, in a sublateral vitta extending to the apex and thence along the 

 suture in apical third; on the under surface they are slender, white and 

 sparse throughout within the coarse and somewhat close-set punctures; 

 beak in the female cylindric, evenly and slightly arcuate, finely, sparsely 

 punctulate and as long as the head and prothorax, the antennae at four- 

 sevenths, the club narrow; prothorax a sixth wider than long, parallel, 

 the sides slightly rounding anteriorly, the subtubulate apex two-thirds 

 as wide as the base; punctures sparse, deep and rather coarse, with a 

 sublateral smoother area, the median line also smooth; scutellum very 

 small, nude; elytra one-half longer than wide, subparabolic, slightly 

 wider than the prothorax and four-fifths longer, the striae moderate; 

 intervals three times as wide as the striae, each with a single line of 

 moderate, deep and widely spaced punctures. Length (9) 3.0 mm.; 

 width 1. 15 mm. Guatemala (Mauricio, — ^elev. 500 ft.). One example. 



A distinctly differentiated species in its polished surface, coarse, 

 rather sparse punctures and in pecuHarities of ornamentation. 



*Anacentrus politus n. sp. — Subparallel, narrower than the preceding, 

 convex, polished, piceous-black throughout; whitish scales of the upper 

 surface loosely aggregated along the sides of the pronotum and denser 

 in a spot on the basal lobe, the squamules elsewhere invisible; on the 

 elytra they are very small, slender and scarcely visible but become 

 more distinct though slender and sparse toward the suture apically, the 

 very small scutellum nude as usual; beneath, the squamules are fine and 

 very sparse within the very coarse, rather close-set punctures; beak in 

 the female slender, cylindric, evenly but only feebly arcuate, finely, 

 sparsely punctulate and only as long as the prothorax, the antennae at 

 four-sevenths, the club narrow as in the preceding; prothorax very 

 nearly as long as wide, the parallel sides distinctly, subevenly arcuate 



