42 GEO. H. HORN, M. D. 



N. penetrans Lee. — Elon<<ate, subcylindrical, narrower posteriorly, dark 

 brown or piceous, feebly shining, sparsely clothed with short cinereous pubes- 

 cence ; antennie ferruginous, not as long as half the body, second joint longer 

 than the fourth, third fully as long as the next two, four, tive and six short, as 

 wide as long, seven to eleven wider, equal in length, each as long as the third; 

 head densely and roughly jjunctured, a slight depression above the base of the 

 clypeus, above which is a slightly elevated smooth line ; thorax distinctly longer 

 than wide, sides at apical third arcuately narrowing to the front, posterior two- 

 thirds straight and parallel, liind angles acute not cai'inate, disc convex, at mid- 

 dle slightly flattened, a distinct median impression extending two-thirds to the 

 front, on each side a fovea more or less distinct, surface densely, roughly punc- 

 tate ; elytra distinctly striate, the intervals flat, densely but not rugosely punc- 

 tate ; prosternnm moderately closely punctate, the propleural triangle more 

 densely, the antennal vague impression median : metasternum and abdomen 

 densely punctate, the last ventral segment rough and acutely prolonged ; legs 

 rufo-ferruginous. Length .24 inch ; 6 mm. 



In this species the median line of the thorax is less depressed and 

 shorter than in atropos, the antenna? otherwise formed and the nnder 

 side of the body more densely punctnred. 



Occurs from Canada to Georgia. 



N. piinctatus Lee. — Form moderately elongate, gradually narrower from 

 the humeri posteriorly, ferruginous brown, feebly shining, sparsely clothed with 

 fulvous pubescence; antennae slender, as long as half the body, joint two a little 

 longer than the fourth, third very little longer than the entire second, joints four 

 to eleven gradually increasing in length ; head convex, very coarsely and roughly 

 punctured, a slight depression above the base of the clypeus, the latter a little 

 narrower than the distance to the eyes ; thorax not longer than wide, widest 

 between the hind angles, sides nearly parallel posteriorly, arcuately narrowing 

 to the apex, hind angles acute, very little prolonged ; disc convex, without me- 

 dian depression, surface coarsely, densely and very roughly imnctured ; elytra 

 gradually narrower from the humeri, striate, intervals slightly convex at base, 

 coarsely asperately punctate, especially in front ; prosternum coarsely, obsoletely 

 punctured, the triangle more coarsely, the antennal depression extending along 

 the entire outer border and smooth ; metasternum andfabdomen densely jninctate, 

 the last ventral segment roughly at apex, the tip obtusely prolonged ; legs brown. 

 Length .21 - .26 inch ; .5.5 - 6.5 mm. 



It is very evident that the description by Dr. LeConte has been 

 made ])artlv from two distinct species, and I assume that the specimen 

 in his cabinet bearinjj; his label must be accepted as the type of the 

 species. In jmiirtdtits the third antennal joint is very little longer 

 than the entire second and not longer than the fifth, while in the next 

 species the third joint is decidedly longer than l)oth the third and 

 fifth. In jHiriihis the antennal groove is visible only in front, whik' 

 in punctafiiM it is much smoother and extends the entire length of tiie 

 outer margin. 



Occurs in Florida. 



