74 GEO. H. HORN, M. D. 



Female. — Front seneous or cupreous, more couvex, usually witli two chevrons 

 and sometimes a smooth median line in front ; antennae darker and less metallic 

 than in the male ; prosternum smooth at middle as in the male ; anterior femur 

 as in the male but less stout, the tibia less ai'cuate and not denticulate ; middle 

 tibia nearly straight, the posterior straight; last ventral segment (9) carinate at 

 middle, the apex truncate, with a slight tooth at middle, the angles prominent; 

 an intra-marginal serrate ridge ; last dorsal coarsely and densely punctate, 

 strongly carinate at middle and distinctly emarginate at apex. 



In both sexes the first ventral segment is vaguely sulcate. There 

 have been no variations of moment observed in this species. On 

 comparison with ntabalipa its form is less elongate, the golden fovese 

 more evident and the emargination of the front rounded at bottom. 



Occurs in Texas, Arizona, California and in Tamaulipas, Mexico. 



3. C Kdwm'tlNii u. sp. — Form rather robust, moderately convex, piceous, 

 with faint bronze lustre on the elytra, more shining on the head and thorax, be- 

 neath coppery bronze; head densely punctured; clypeus (12) deeply, semi-circu- 

 larly emarginate at middle, on ,eaeh side dentiform ; anteuuse piceous, feebly 

 bronzed, third joint a little shorter than the next two, joints four to eleven grad- 

 ually narrower ; thorax more than twice as wide as long, sides feebly arcuate, 

 sinuate at middle, obliquely narrowing at apex, and slightly arcuately narrowing 

 at base, disc regularly convex, without callosities or depressions, coarsely punc- 

 tate, rather sparsely at middle, more densely and transversely wrinkled at the 

 sides; elytra very little wider than the thorax, very little more than twice as 

 long as wide, arcuately narrowing at apical third, the lateral margin serrate ; the 

 sutural margin elevated two-thirds to base, the first costa sharply elevated 

 three-fourths to base, the second nearly as long, the third less distinct, the fourth 

 very distinct in its apical half; the basal fovea deep, the humeral depression dis- 

 tinct, the discal fovea; existing in a faint trace, the inner about one-fourth from 

 the apex between the first and second costse, the second more anterior, interrupt- 

 ing the third costa ; intervals between the costte moderately, densely and very 

 regularly punctate ; body beneath coarsely and moderately densely punctured, 

 the ventral segments one to five with a smooth umbone at the sides. Length 

 .45 inch ; 11.5 mm. (Fig. 11.) 



3Iale. — Unknown. 



Female. -Front cupreous, convex, with two chevrons in the form of an inverted 

 V ; prosternum broadly smooth at middle, coarsely punctured at the sides ; an- 

 terior tibije slightly arcuate, the middle and posterior straight ; last ventral seg- 

 ment (13) nearly semi-circular, with a very feeble notch at tip, the margin ser- 

 rate ; a distinct submarginal line, within which is a feebly serrate elevation. 



The prosternum is very distinctly lobed in front and the tooth of 

 the anterior femur is serrate along its entire outer edge from the 

 apex. 



At first glance this species resembles some of the more robust 

 forms of femorata. It is, however, easily known from any other 

 species in our fauna by the form of the clypeus which seems peculiar. 



Occurs at Tucson, Arizona ; Henry Edwards. 



