400 CALIFORNIA ACADEMY OF SCIENCES. 



In the male the fifth ventral is deeply sinuate each side, 

 the middle produced in an obtuse lobe. The penis has 

 two hooks on tip and on each side are two elongate 

 spoonlike pieces. The last dorsal is elongate-oval, sub- 

 acute, and deeply concave. In the female the last ventral 

 is more elongate, the sides oblique near the apex. 



Very little variation has been observed. Sometimes 

 the central thoracic spot is elongate, and the lateral spots 

 may be absent. 



Occurs abundantly on the sea coast near San Fran- 

 cisco and southward. 



Copidita notoxoides Fab. (Necydalis) Syst. El., 2, p. 

 3 6 9- 



Form slender, in great part black, thorax and tibiae 

 reddish yellow. Antennae black. Head black, densely 

 punctured. Thorax slightly longer than wide, sides ar- 

 cuate in front, sinuate posteriorly, coarsely and closely 

 punctate, alutaceous, color reddish yellow, with a black 

 spot each side at base. Elytra black, finely pubescent, 

 densely punctate, subopaque, surface obsoletely costulate. 

 Length .24-. 36 inch.; 6-9 mm. 



The only variation I have observed in this species is in 

 the occurrence of two black spots at apex of thorax. No 

 sexual characters have been observed. 



This species was included in Oxacis by LeConte, but 

 the bifid mandibles prevent such position. Mr. Cham- 

 pion has properly suggested its removal. 



Occurs in Georgia, South Carolina and Florida. 



Copidita thoracica Fab. (Necydalis) Syst. EL, ii, p. 370. 



Copidita frazini Say. (Ede?nera, Journ. Phil. Acad., iii, p. 272. 



Form slender, piceous black, thorax reddish yellow, 

 elytra varying to purple and blue. Antennae entirely 



