416 CALIFORNIA ACADEMY OF SCIENCES. 



densely punctate, the costee not very strongly marked. 

 Body beneath piceous, abdomen rather densely and finely 

 punctate. Legs piceous, femora paler at base. Length 

 .37 inch. ; 9.25 mm. 



This species may be known by the coarse and rather 

 dense grayish white pubescence. 



Two specimens, Texas. 



Oxaciscana Lee. (Asclera) Proc. Phil. Acad. 1854, P- 22 5- 



Piceous, thorax reddish yellow, elytra with the suture 

 and an outer vitta testaceous. Head piceous, sometimes 

 more or less testaceous, closely punctate. Thorax slightly 

 longer than wide, sides arcuate in front, slightly sinuately 

 narrowed posteriorly, disc regularly convex, moderately 

 closely punctate. Elytra piceous, moderately closely 

 punctate, feebly pubescent, suture pale and a pale vitta 

 extending from humerus nearly to apex. Body beneath 

 piceous, finely punctate, and more distinctly pubescent 

 than above. Length .22-. 38 inch.; 5.5-9.5 mm. 



This species varies slightly in color. The thorax is 

 more often immaculate, but specimens occur with an 

 elongate median piceous stripe and a small spot each 

 side. 



At first glance this species and Copidita mimetica have 

 a close resemblance, but apart from the form of the man- 

 dibles the outer pale elytral vitta is here not marginal as 

 in that species. 



Occurs in Texas and Arizona. 



Oxacis taeniata Lee. (Asclera) Proc. Phil. Acad. 1854, 

 p. 21. 

 Color variable. Antennae pale or somewhat piceous. 

 Head coarsely punctate. Thorax a little longer than 

 wide, sides arcuate in front, obliquely narrowed poste- 

 riorly, disc slightly depressed each side, coarsely not 



