CEDEMERID^E OF BOREAL AMERICA. 417 



densely punctured. Elytra rather more finely and dense- 

 ly punctured than the thorax, without trace of costae. 

 Beneath finely and densely punctured. Length .18-. 28 

 inch. ; 4.5—7 mm. 



Typical form. Head and thorax yellowish, the latter 

 with a piceous spot each side. Elytra piceous with the 

 suture narrowly pale. Body beneath pale, abdomen pi- 

 ceous, legs pale. 



The piceous spaces at the sides of thorax extend so 

 that the entire surface may be piceous. 



Specimens with the thorax entirely piceous have often 

 the elytra somewhat blue but with the pale suture. These 

 have the legs piceous to a variable degree. 



Other specimens have the characters of the preceding, 

 but the suture is not pale and the legs are entirely so. 



In the two last mentioned forms the entire surface be- 

 neath is piceous. 



Occurs in Georgia, Florida, and Texas. 



Oxacis bicolor Lee. (Asclcra), Ann. Lye. N.Y., v, p. 158. 



Form very slender, piceous, head, thorax and legs yel- 

 low. Antennae piceous, slightly paler at base. Head 

 shining, sparsely punctulate. Thorax longer than wide, 

 sides feebly arcuate in front, oblique posteriorly, very 

 slightly narrowed to base, disc feebly convex, shining, 

 rather coarsely not closely punctate. Elytra more finely 

 punctate than the thorax, moderately closely punctate, 

 pubescence short and dark, without traces of costae. 

 Metasternum and abdomen piceous, very finely, sparsely 

 punctate. Femora yellow, tibiae and tarsi piceous. 

 Length .20-. 32 inch.; 5-8 mm. 



Excepting in size there has been no variation observed. 



Occurs from British Columbia southward through 

 Washington, Oregon, California, Nevada, and Arizona. 



