410 CALIFORNIA ACADEMY OF SCIENCES. 



Sisenes championi Horn, Proc. Cal. Acad. Sci., 1894, P- 



435- 



Form moderately slender, somewhat lyciform ; head, 

 body beneath, and legs bluish, submetallic, elytra reddish 

 orange. Head not densely punctate, antennae black, 

 eyes distant from prothorax. Thorax longer than wide, 

 cylindrical, slightly arcuately broader, one-third from 

 apex, disc somewhat irregular, color deep blue, with an 

 irregular orange stripe each side, with similar pubescence, 

 surface moderately closely punctate. Elytra nearly twice 

 as wide at base as the thorax, gradually broader posteri- 

 orly, disc finely tricostulate, color reddish orange, with 

 fine short pubescence of similar color. Surface beneath 

 sparsely punctate. Length .36-. 40 inch.; 9-10 mm. 



In the male the fifth ventral segment is broadly not 

 deeply emarginate, the sixth segment prominent, deeply 

 divided, the lateral parts slightly arcuate and concave. 

 The female has the fifth ventral obtuse with a median 

 impression. 



Occurs in southern Arizona (Morrison). 



Oxacis Lee. 



Form slender. Head oval, not prolonged. Eyes 

 emarginate. Antennae slender, eleven-jointed in both 

 sexes, inserted close to the eyes. Terminal joint of max- 

 illary palpus either cultriform or triangular. Mandibles 

 acute at tip. Tibiae with two terminal spurs. Penulti- 

 mate joint of tarsus alone spongy-pubescent beneath. 

 Claws either simple or toothed. 



This genus, as conceived by its author, contained only 

 those species with simple claws, those with toothed claws 

 were considered Probosca. Mr. Champion (Biologia, iv, 

 2, p. 150) is unwilling to admit that species with toothed 

 claws should be separated, as, from his observations, in- 



