372 CALIFORNIA ACADEMY OF SCIENCES. 



at the iimbones than the thorax, sides nearly parallel, 

 narrowing at apical third, surface with striae of punctures 

 not densely placed, the punctures coarser toward apex 

 and at the sides where the strice are impressed and the 

 intervals convex, a single row of finer punctures in the 

 intervals, pubescence scarcely evident. Prosternum tri- 

 sinuate in front, forming a short broad lobe at middle, 

 which is broadly emarginate with angles rounded, surface 

 at middle coarsely and closely punctate, the flanks with 

 shallow variolate punctures. Meso-metasternum coarsely 

 punctured at middle, with dense silken white hair at the 

 sides. Abdomen smooth and sparsely punctate at mid- 

 dle, densely punctate at sides, with white silken hair. 

 Length, .25-.3oinch; 6.25-7.50 mm. 



This species resembles sZ/V/z/c?/^/ very closely, and might 

 readily be mistaken for it without an examination of the 

 prosternum. The present species is, however, more 

 shining, the thorax more finely punctate and the pubes- 

 cence at the sides of the body more dense. One speci- 

 men has a small red spot immediately in front of the larger 

 spot. 



Occurs near Tucson, Ariz. 



AcM^ODERA MACULiFERA n. sp. Plate viii, fig. 5. 



Form of ainpIicoUis, but more flattened above; head, 

 thorax and body beneath aeneous, sides of thorax and 

 elytra yellow, the latter with three rows of round black 

 spots. Front slightly concave, closely moderately evenly 

 punctate, hairy. Thorax more than twice as wide as 

 long, widest at base, sides narrowing to front, slightly 

 arcuate, hind angles (seen from above) obtuse, lateral 

 margin visible from above, disc with an impressed line 

 behind the apical margin at the sides and parallel with it, 

 a broad but shallow sub-triangular depression at middle, 

 an oblique impression each side, a broad yellow space 



