98 GEO. H. HORN, M. D. 



nearly straight, disc feebly convex, a vague median depression and others laterally, 

 surface coarsely, densely and equally punctured ; elytra a little wider than the 

 thorax, parallel, narrowed at apical third, the margins serrulate, the apices ob- 

 tuse ; disc feebly convex, the three costse very feebly indicated, the second and 

 third interrupted by vague oblique fovea}, the surface rather coarsely, but closely 

 punctured ; ])ddy beneath more shining than above, the punctures moderately 

 closely placed, the ventral segments without lateral callosities ; prosternum dis- 

 tinctly lobed in front, the lobe short ; last ventral segment with serrulate margin, 

 but without submargiual elevated line; anterior femur with moderately strong, 

 serrulate tooth. Length .22 - .28 inch ; 5.5 - 7 mm. ( Fig. 140. ) 



Male. — Prosternum moderately, coarsely and closely punctate, sparsely pubes- 

 cent; anterior tibige (144) arcuate, with a small semi-circular dilatation before 

 the apex ; middle tibiie slightly arcuate, the posterior straight; last ventral (142) 

 with a small semi-circular emargination, the last dorsal sparsely coarsely punc- 

 tate, feebly emarginate at tip. 



Female. — Prosternum more coarsely, less closely punctate, not hairy ; anterior 

 tibia scarcely arcuate, the middle and posterior straight; last ventral (143) lon- 

 ger than in the male, with a very slight emargination, the last dorsal coarsely 

 punctate, the apex entire. 



This is a small and inconspicuous species quite constant in its color, 

 but variable in the distinctness of its markings as the costse may 

 almost entirely disappear and the foveae become very vague. The 

 basal depression of the elytra usually remains quite distinct. 



Occurs from Massachusetts to Wisconsin and North Carolina ; 

 does not seem to be rare. 



29. C iiixa n. sp. — Form moderately elongate, subdepressed, dark cupreous, 

 subopaque, beneath more shining and paler; antennie dark bronze, gradually 

 more slender to the tip, third joint as long as the next two ; front o feebly con- 

 ■ vex, densely punctured slightly hairy ; clypeus (146) with a shallow, but very 

 broad emargination at middle ; thorax twice as wide as long, slightly narrowed 

 at apex and base, sides at middle slightly arcuate : disc slightly convex, a vague 

 median depression and a slightly impressed line posteriorly, a slight post-apical 

 depression and smoother near the sides ; surface very coarsely and closely punc- 

 tate, subconfluent near the sides ; elytra a little wider than the thorax, parallel, 

 narrowed at apical third, the margin sen-ulate, the apex obtuse ; disc obsoletely 

 costate, the first costa alone elevated from the apex to the middle, the basal and 

 humeral fovese moderately deep, three very vague discal fovefe, one at apical 

 third between the first and second costse, a second more anterior at the end of 

 the third costa, the third interrupting the second costa a little in front of middle, 

 surface coarsely punctured, sparsely on the disc, densely at the sides; body be- 

 neath coarsely, sparsely punctate, the ventral segments without callosity ; pros- 

 ternum very distinctly lobed in front ; aruterior femur with a rather small serru- 

 late tooth at middle ; last ventral segment distinctly serrulate along it® margin. 

 Length .32 - .40 inch ; 8- 10 mm. (Fig. 145.) 



JVfa?e. — Prosternum coarsely, densely punctate, sparsely pitfiescent; anterior 

 tibise ;149) arcuate and with a deep oblique sinuation one-fourth from the tip, 

 below which is a moderate dilatation ; middle tibia slightly arcuate, the posterior 

 slightly sinuous ; last ventral segment (147) deeply semi-circularly emarginate ; 

 last dorsal coarsely punctate and rather deeply triangularly emarginate. 



