404 CALIFORNIA ACADEMY OF SCIENCES. 



sparsely pubescent, feebly subcostulate. Body beneath 

 blue, shining, sparsely punctate and pubescent. Legs 

 black. Length .32-. 40 inch.; 8-10 mm. 



Similar to obscura, but differently colored and with 

 narrower thorax. No sexual differences have been ob- 

 served in the two specimens examined. 



Occurs in Oregon and northern California. 



Copidita cyanipennis Horn (Ditylus) Trans. Am. Ent. 

 Soc, 1870, p. 89. 



Color bluish black, shining, elytra metallic blue. Head 

 metallic blue, shining, coarsely not densely punctured. 

 Thorax black, faintly bluish, rather coarsely and densely 

 punctured, not longer than broad, sides feebly arcuate in 

 front, gradually narrower to base, disc with an indistinct 

 impression on the median line in front, and a vague V- 

 shaped impression with the apex posteriorly. Elytra 

 bright blue, with slight violet tinge, densely punctured 

 and scabrous. Body beneath metallic blue, shining, 

 sparsely punctured and with few pale hairs. Legs bluish 

 black. Length .30 inch.; 7.5 mm. 



Coast Range below San Francisco, California. 



Asclera Schmidt. 



Form slender. Head oval, not elongate. Antennas 

 slender eleven-jointed in both sexes. Mandibles bifid at 

 tip. Last joint of maxillary palpi triangular, similar in 

 the sexes. Tibiae with two terminal spurs. Penultimate 

 joint of tarsi alone spongy-pubescent. Claws toothed at 

 base. 



Asclera differs from Copidita in the fact that the claws 

 are toothed. In Oxacis we are compelled to admit species 

 with both toothed and simple claws, so that the difference 

 between those genera does not seem very great. It will, 

 however, be observed in all our species of Asclera that 



