NORTH AMERICAN COLEOPTERA. 83 



Male. — Prostenium not lobed in front, coarsely, densely punctured, with a feeble 

 trace of smooth median space, sparsely puliescent ; anterior tibia (55) slightly ar- 

 cuate, and with a very acute tooth one-third from the tip ; middle tibia slightly 

 sinuate on the inner side; last ventral segment (53) broadly, almost semi-circu- 

 larly emarginate ; last dorsal sparsely punctured. 



Female. — Prosternum coarsely, sparsely punctured, the median smooth space 

 evident; anterior tibia slightly arcuate, middle and posterior straight ; last ven- 

 tral segment (54) with a very small emargination at apex ; last doi-sal very coarsely 

 densely punctured. 



The general style of elytral sculpture is that of contigua, cupras- 

 cens and speculifer, and in aspect it resembles especially the second. 

 The form of the clypeus will distinguish it from the first two while 

 the form and position of the anterior tibial tooth of male will sepa- 

 rate it from the third. It is almost impossible, in description, to 

 separate the females of speculifer and ignkoJUs. 



Occurs in Colorado and Texas. 



12. C. speculifer n. sp. — Form oblong, subdepressed, as in the var. misella 

 of femorata, bright cupreo-seneous, usually more red posteriorly; antennee piceous, 

 slightly feneous, more slender externally, the third joint as long as the next two ; 

 front slightly convex in both sexes, coarsely and closely punctured, with callosi- 

 ties sometimes forming two chevrons; clypeus (57) very broadly but not deeply 

 triangularly emarginate on each side rounded, usually with a submarginal elevated 

 line parallel with the emargination ; thorax rather more than twice as wide as 

 long, sides at middle slightly sinuate, narrowed at apex and base ; disc moderately 

 convex, at middle a slight depression with distinctly impressed line, near the side 

 irregular depressions and opposite the middle of base of each elytron a feeble 

 cariniform callus; surface densely punctate at middle, then niore sparsely punc- 

 tate, continent near the sides ; elytra a little wider than the thorax, parallel, nar- 

 rowed at apical third, the margin posteriorly feebly serrate, the apices separately 

 rounded ; disc subdepressed, the first costa distinctly elevated from apex to middle, 

 two more densely punctured discal fovese of large and irregular form, the one at 

 apical third the other in front of middle, the basal fovea deep, and with elevated 

 spaces conspicuously shining and smooth, the surface otherwise rather densely 

 and coarsely punctured ; body beneath very coarsely not closely punctate, the 

 ventral segments with distinct callosities at the sides ; prosternum not lobed in 

 front, coarsely, closely punctate in both sexes with feeble, smooth, median line ; 

 anterior femur with moderate tooth serrate on its distal margin. Length .24- .28 

 inch; 6-7 mm. (Fig. 56.) 



Male. — Anterior tibia (60) feebly arcuate, slightly broadened at tip and with an 

 acute tooth near the apex ; middle tibia slightly arcuate, the posterior straight ; 

 last ventral segment (58) semi-circularly emarginate. 



Female.— Anterior tibia slightly arcuate, without notch ; the middle and poste- 

 rior straight ; last ventral (59) with a very small emargination at tip. 



With a similai-ity of surface sculpture to the other members of the 

 group with toothed auterior tibia, this species is notable in having 



