392 CALIFORNIA ACADEMY OF SCIENCES. 



come invalid by the discovery of other species. The 

 generic name will, however, be retained until some one 

 with greater opportunities and more material shall have 

 studied the family more carefully than it is possible for 

 me to do at the present time. 



The species known to me are as follows: — 



Elytra piceous with the suture and entire limb testaceous. 



Head testaceous with indefinite piceous spaces; thorax pale with median 



piceous stripe and lateral spots; femora piceous. tr'motata. 



Head entirely yellow; thorax yellow with lateral spots only; femora yel- 

 lowish, lateralis. 

 Elytra pale testaceous with, at times, a slight humeral cloud. 



Head aud thorax yellowish, the latter with a slight lateral spot often 

 absent. testacea. 



Elytra uniform in color. 



Elytra distinctly blue; thorax reddish yellow. 



Head yellow; legs parti-colored. calif ornica. 



Head black; legs totally black. marina. 



Elytra piceous black, rarely slightly purplish; thorax reddish yellow 



with central spot. 



Head black; legs black. centralis. 



Xanthochroa trinotata Lee. New Species, 1866, p. 164. 



Form slender and elongate, brownish, sparsely, finely 

 pubescent, elytra with suture and entire border pale. 

 Head punctate, sparsely on the front, color pale yellow 

 with a piceous spot on front and one between the eyes, 

 sometimes nearly entirely piceous. Thorax longer than 

 wide, sides moderately arcuate in front, surface shining, 

 closely punctate, disc somewhat irregular. Elytra densely 

 punctate, distinctly costulate, the outer one quite well 

 marked. Body beneath fuscous, abdomen finely punc- 

 tulate. Length . 40-. 48 inch. ; 10-12 mm. 



The thorax has usually lateral stripes and a median 

 piceous stripe, the latter at times more or less expanded 

 to cover nearly the entire surface. 



The only specimens known to me are from Louisiana. 



