258 Natural History Bulletin. 



Head^ exclusive of the large, coarsely-facetted eyes, as wide 

 as long, trapezoidal, nearly quadrate, coarsely but not densely 

 punctured, rather convex above, without occipital foveae. 

 There is an impression on each side of the convex middle 

 portion of the front inside the supra-antennal tubercles; the 

 sides are not carinate; gula bicarinate, tempora rounded, 

 nearly as long as the eye. Antennce with long pubescence, as 

 long as the head and thorax, first joint cylindrical, flattened, 

 above, more than twice as long as thick. Second a little 

 shorter, equally thick, cylindrical, rounded at the tip; third to 

 eighth smaller, narrower, obconical, gradually and slightly 

 increasing in thickness, ninth and tenth evenly increasing in 

 width, trapezoidal, the tenth twice as wide as long; eleventh 

 oval, truncate at the base, one-half longer than wide. Pro- 

 thorax wider than the head with the eyes, widest before the 

 middle, sides convergent and very slightly sinuate toward the 

 neck, less convergent but strongl}^ sinuate near the base, 

 which is twice as wide as the neck. Disk convex, coarsely 

 and deeply punctured, the median basal punctures not at all 

 conspicuous, the lateral foveae impressed on the declivous 

 impressed space near the basal angles. Elytra broad-shoul- 

 dered, wider than the prothorax at the base, and with this 

 width and length equal; beyond the middle they are one-third 

 broader. Disk moderately evenly convex, less strongly punc- 

 tured, bifoveate at base, sutural lines not very close, parallel, 

 but convergent near the tip, not deeply impressed; discal lines 

 one-half the length, fine, parallel to the suture. Abdomen 

 short, strongl}' declivous behind, basal segment twice as wide 

 as long, punctured, carinas divergent, one-third the length of 

 the segment and including half its width. The third segment 

 in the I has large impressions on each side of the middle con- 

 verging forward, leaving an oblong median elevation bearing 

 long hairs, legs slender. 



Habitat. Northern Atlantic States. More rare in the West. 



N. ciNCiNATA, Casey. Reddish-brown, pubescence moder- 

 ately long and dense. Length, i.o mm. 



