no MEMOIRS ON THE COLEOPTERA. 



less broad and more feebly punctate prothorax, less strongly incras- 

 sate antennae and much larger tubercle of the fifth male tergite. 



Sableta (Canastota) ornator n. sp. Less stout, moderately convex, rather 

 shining, pale testaceous, the elytra not differing materially in tint and not 

 infumate, the head and a large subapical abdominal cloud blackish, the legs 

 pale; punctures very fine, not evidently asperate except on the elytra, where 

 they are closer and strongly asperate; head wider than long, the eyes large, 

 prominent, at but little more than half their length from the base, the tempora 

 rapidly converging and arcuate behind them; antennae pale, nearly as in 

 the preceding, short, gradually strongly incrassate, with very transverse 

 subapical joints; prothorax strongly transverse, broadly rounded at base 

 but subtruncate medially, parallel and strongly rounded at the sides, much 

 wider than the head and as wide as the elytral base, with a small and rounded, 

 very feeble impression at some distance from the basal margin; elytra rather 

 transverse, subparallel, the apices broadly and feebly sinuate externally, 

 the suture fully two-fifths longer than the prothorax; abdomen distinctly 

 narrower than the elytra, gradually and evenly but feebly tapering through- 

 out, the fifth tergite (d 71 ) unmodified, the sixth truncate at tip and with four 

 small, short, rather acute and similar teeth, the two medial only a little more 

 widely separated than either from the lateral, the latter slightly longer and 

 feebly hollowed on their inner slope. Length 1.5 mm.; width 0.^4 mm. 

 New York (Catskill Mts.). 



To be easily known by its rather narrow form and by the male 

 sexual characters. 



Sableta (Canastota) longiclava n. sp. Parallel, moderately convex, shining, 

 pale testaceous, the elytra paler and more silvery-flavate; head and a large 

 subapical abdominal cloud dark piceous, the legs pale; punctures fine, well 

 spaced, not strongly asperate and well separated even on the elytra; head 

 wider than long, parallel at the sides, the eyes large, at much less than their 

 own length from the base; antennae moderately short, slender and pale 

 testaceous basally, the outer seven joints forming an abruptly very thick 

 and parallel-sided club, fuscous in color, the last joint pointed and fully as 

 long as the preceding two, the preceding six joints short and very strongly 

 transverse; prothorax moderately transverse, the sides strongly rounded, 

 gradually a little more converging anteriorly, the base conspicuously rounded, 

 much wider than the head and fully as wide as the elytra, the median line 

 broadly impressed from behind the middle almost to the apex; elytra well 

 developed, subparallel, the suture fully a third longer than the prothorax; 

 abdomen distinctly narrower than the elytra, perfectly parallel to the tip 

 of the fifth tergite, which (cf) is not quite as long as the fourth and with 

 numerous coarse longitudinal rugae, the sixth somewhat as in the preceding, 

 except that the four teeth are stouter, the two median almost twice as widely 

 separated as either from the lateral and the general surface of the tergite 

 more uneven; the first three tergites are very strongly impressed at base. 

 Length 1.6 mm.; width 0.45 mm. Rhode Island (Boston Neck). 



Readily distinguishable by its more parallel form, male sexual 

 characters and antennal structure. 



