468 Memoirs on the Coleoptera 



evenly, distinctly arcuate, very gradually and coarcuately rounding 

 anteriorly to the briefly subtubulate apex, which is barely more than 

 half as wide as the base; punctures fine, rather sparse, larger and forming 

 some rugulae at the extreme sides; smooth median line sharply defined 

 and entire; scutellum flat, smooth, bicuspid behind; elytra nearly one- 

 half longer than wide, only slightly wider than the prothorax and two- 

 thirds longer, the humeri obtusely tumid; outline subparabolic, the apex 

 somewhat obtuse; striae moderate, feebly and minutely, subcrenately 

 punctate; intervals three to four times as wide as the striae, with single 

 or confused series of very fine punctures, those of the third and fifth also 

 with some noticeably larger punctures at remote intervals in the series; 

 abdomen shining, finely, rather sparsely punctulate. Length (9) 2.8 

 mm.; width 1.3 mm. Texas (Brownsville), — Wickham. 



There is no other species known to me with which this can be 

 closely compared ; probably it belongs to a more tropical structural 

 type. The species which I described under the name Limnoharis 

 ohlita, has a similar perfectly nude and even more alutaceous upper 

 surface, but in the latter the body is more elongate and less convex, 

 and the sculpture throughout much stronger and decidedly closer. 



Anacentrus apertus n. sp. — Elongate, oblong-oval, rather depressed, 

 polished, deep black throughout, glabrous, the strial intervals with 

 single series of minute and inconspicuous setiform squamules; those 

 beneath also very small and sparse; beak slender, cylindric, as long as 

 the head and prothorax, a little shorter in the male, finely, sparsely 

 punctulate, evenly and feebly arcuate, the antennae slender, at three- 

 fifths (d^) or but just behind this point ( 9 ) ; first joint of club more than 

 half the mass, pubescent; prothorax fully as long as wide, the sides 

 parallel, broadly, subevenly arcuate, just visibly more converging before 

 the middle to the apical constriction, the tubulate apex evidently more 

 than half as wide as the base; punctures not coarse but distinct, well 

 separated, sometimes rugulosely confluent at the extreme sides; median 

 smooth line slightly traceable centrally; scutellum very small, emarginate 

 behind; elytra one-half longer than wide and subparabolic, with only 

 feebly marked and obtuse humeri, slightly wider than the prothorax and 

 four-fifths longer; striae sharply defined but not very coarse or deep; 

 intervals between two and three times as wide as the grooves, each with a 

 single line of minute and widely spaced punctures; male with the apical 

 part of the pygidium exposed, the abdomen shallowly impressed medio- 

 basally. Length (cf 9) 3-5-3-8 mm.; width i. 2-1. 33 mm. Utah 

 (Provo and near St. George) and Texas (western), — Dunn. Seven 

 specimens. 



Allied to the Calif ornian nasutus Lee, but much smaller, with 

 narrower elytral striae and relatively wider intervals and also finer 

 and still sparser punctures of the under surface. In nasutus the 

 prothorax is more abruptly constricted at apex than in apertus. 



