78 GEO. H. HORN, M. D. 



and second costfe distinct near tlie apex, and with two fovese on each side, which 

 are transverse in form, the tirst a little in front of middle, the second one-third 

 from apex, the basal depression father feeble, the surface otherwise coarsely and 

 near the sides conflueutly punctured ; body beneath more shining than above 

 and more metallic, usually more or less greenish in the % or cupreous 9 , the 

 surface coarsely but not densely punctured, the ventral segments with a trian- 

 gular umlxnie on each side ; presternum not lobed in front, the surface coarsely 

 punctured at the sides and with a smooth broad line at middle, hairy in the % ; 

 anterior femur with a rather broad, obtuse tooth, the entire margin of which is 

 serrate. Length .28- .64 inch ; 7- 16 mm. (Fig. 30.) 



Male. — Front usually green, hairy ; anterior tibise (34) arcuate, slightly dilated 

 at tip, the inner margin with small teeth, usually five, sometimes more, rarely 

 serrulate ; middle tibise arcuate, the inner margin serrulate, except near the 

 base; iiosterior tibite straight; last ventral segment (32) with the margin serru- 

 late, a submarginal depression, the apex semi-circularly emarginate ; last dorsal 

 segment coarsely, sparsely punctate, the apical border emarginate. 



Female. — Front cupreous, never green, not hairy; anterior tibiae arcuate, 

 slightly broader at tip, not serrate or toothed internally ; middle tibive slightly 

 arcuate, inner margin simple ; posterior tibiae straight; last ventral segment (33) 

 more elongate than in the male, the apex broadly but feebly emai-ginate, the 

 angles sometimes slightly prominent; last dorsal strongly carinate at middle, 

 the apex truncate. 



As might be expected Avith a species of such wide distriliution the 

 variations in aspect and in sculpture are very great, but with a large 

 series the specific identity of all the forms is easily demonstrable. 

 The essential characters of the speckles remain the same through all 

 its variations and may be summarized as follows ; last ventral seg- 

 ment with serrulate margin ; thorax with irregular surface ; clypeus 

 acutely notched at middle and semi-circular each side; anterior tibias 

 of male slightly dilated at tip, the inner side denticulate. 



The form of the clypeus is peculiar to the s])ecies, the only ap- 

 proach to a similarity being in sexdg}iata, which has the margin of 

 the last ventral simple. The variations of sculpture have given rise 

 to the descriptions of many of the forms under different specific 

 names, the most important of which will be briefly noted. 



C. Alabamce Gory. — This is the larger and more robust form oc- 

 curring in the Gulf States. The sculpture is quite coarse, but the 

 elytral costae are hardly indicated. The fovefe of the disc are well 

 marked and usually coj^pery. 



C. femorata Fab. — Is the form more common in the Middle States, 

 and in size it is somewhat smaller and less robust than Alabamce, the 

 sculpture smoother, the elytral cost® a little more evident, and the 

 foveae more sharply limited. 



