COLEOPTERA OF BAJA CALIFORNIA. 377 



the species in the "truncatce," while the structure of the 

 antennas and the absence of thoracic margin relate it to 

 gcmiini, from which it differs in its larger size, different 

 elytral ornamentation (that species being vittate), and 

 the absence of lateral thoracic spot. 



Two specimens from Napa County, Cal. 



AcMyEODERA INSIGNIS n. sp. 



Form of culta, dull black, opaque, elytra ornate with 

 yellow spaces. Antenna? as ingemina, the fifth joint not 

 abruptly wider than the fourth. Front convex, obsoletely 

 reticulate, sparsely hairy. Thorax unicolored, about a 

 third wider than long, very little narrower at apex, sides 

 arcuate, lateral margin obliterated in apical half, disc con- 

 vex without impressions, the basal fovea? relatively large 

 and deep, surface reticulately punctured but near the 

 sides somewhat cribrate, surface sparsely hairy. Elytra 

 not wider than the thorax, sides slightly convergent, ar- 

 cuately narrowing at apical third, margin serrulate, sur- 

 face striate, stria? with moderately coarse punctures not 

 closely placed nor deep the intervals slightly convex 

 wrinkled and with a row of punctures bearing a short 

 seta as in culta, surface ornate with yellow formino- a 

 space near the base from the first to fifth stria? extending 

 nearly a third toward apex emitting a branch under the 

 umbone, a narrow band at middle obHque backward from 

 the suture, a spot, single or divided in front of apex, 

 a smaller spot at apex. Prosternum truncate, indistinctly 

 coarsely punctate, the flanks reticulate. Metasternum 

 with shallow reticulations bearing elongate scales. Ab- 

 domen indistinctly reticulate, and with elongate scales 

 those at the sides white, at middle ^^ellow. Last ventral 

 with single apical border. Length, .16 inch; 4 mm. 

 By the prosternum and structure of the antenna? this 



2D See., Vol. IV. ( 25 ) August 3. 1894. 



