88 GEO. H. HORN, M. IX 



coarsely not closely punctate ; prostcrnum (98) not lobed in front ; anterior femur 

 with a rather strong but obtuse tooth, serrate on its distal edge ; last ventral 

 segment with serrulate border. Length .40- .64 inch ; 10-16 mm. (Fig. 75.) 



3Iale. — Prosternum very sparsely punctate, more densely and finely along the 

 anterior border; anterior (79) and middle tibiaj arcuate and slightly dilated near 

 the apex, the posterior very feebly arcuate; last ventral segment (77) broadly, 

 nearly semi-circularly emargiuate : last dorsal coarsely not densely punctate, 

 emarginate at apex. 



Female. — Prosternum as in the male : anterior and middle tibiae feebly arcu- 

 ate, the posterior straight; last ventral (78) longer than in the male, a feeble 

 emargination at apex ; last dorsal coarsely punctate at apex and with a .small 

 emarginatiou. 



Notwithstanding the wide distribution of this species it shows so 

 very little variation except in size and surface color, that there will 

 be no trouble in recognizing it. It is remarkable in having the outer 

 joints of the antennae yellowish testaceous in both sexes, a similar 

 structure will be observed in the male of prolonr/afa. The anterior 

 and middle tibite of the male are almost exactly alike, a condition 

 very unusual in the genus. Superficially the sculpture is somewhat 

 like floricola. 



Occurs in Canada and all the States east of the Mississippi and 

 trom Missouri westward to Nevada and Oregon. I have never had 

 specimens from Texas, Arizona, New Mexico or California. 



17. C Itiflificata n. sjj. — Form moderately elongate, very little convex, 

 piceous or nearly black with the densely punctured spaces cupreous, body be- 

 neath dark bronze ; antennae (96) bronze, joints four to eleven serrate and equally 

 broad, third as long as the next two ; front very slightly convex, coarsely punc- 

 tate, with more elevated tubercles; clypeus (81) very broadly triangularly emar- 

 ginate, on each side slightly arcuate ; thorax nearly twice as wide as long, the 

 sides in front and posteriorly oblique, at middle slightly sinuate ; disc moderately 

 convex, a rather deep, median, densely punctured sulcus limited each side by an 

 irregular co.sta, the surface thence to the sides coarsely and confluently punctured 

 and with two smoother tubercles; elytra a little wider than the thorax, parallel, 

 narrower at apical third, the margin serrulate, the apices obtuse ; disc with the 

 usual four costse, the first nearly entire and straight the others interrupted and 

 irregular, the intervals with alternating smooth and densely punctured spaces, 

 the latter cupreous ; body beneath very shining, sparsely punctate, dark bronze, 

 sometimes slightly greenish at middle ; prosternum truncate in front, coarsely 

 punctate in both sexes, but smoother at middle in the female ; last ventral seg- 

 ment with serrulate margins ; anterior femur strongly toothed, the tooth serru- 

 late on its outer edge. Length .40 -.48 inch ; 10- 12 mm. (Fig. 80.) 



Male. — Anterior tibiae. (84) slightly arcuate, an obtuse dilatation at tip, an ob- 

 lique groove above the dilatation extending along the front of the tibia in front 

 of the dilatation ; middle tibia feebly arcuate and slightly thickened below the 

 middle ; posterior tibia straight; last ventral segment (82)' semi-circularly emar- 

 ginate, a vague median depression ; last dorsal coarsely punctate, emarginate at 

 tip. 



