March, 1922:] Chamberlin : The Genus Pcecilonota. 63 



■' The description given above was based upon a single male. The 

 only other specimen seen, the companion female, differs somewhat as 

 regards the sculpturing of the elytra, all of the intervals here being 

 broadly and frequently interrupted so that they present a chain-like or 

 catenulate appearance instead of the more or less regular one which is 

 observed in the male." 



" This species differs materially from our other species, by its uni- 

 form brassy color, its more evident hairiness, the more distinctly de- 

 fined longitudinal sulci of the pronotum and the greater elevation of 

 the elytral intervals, resembling in this last regard some of our Dicer- 

 cas, such as D. tcncbrosa Kirby." 



"Type male and female from Imperial County, California, June, 

 191 1, collected on flowers by Mr. J. C. Bridwell. The type male in my 

 own collection, the type female in the collection of the University of 

 California. The species named in honor of the collector." Van Dyke. 



There seems to be little additional information concerning this rare 

 species. In a recent letter Dr. Van Dyke writes : 



" There are two specimens in the National Museum Collection from 

 southern Arizona." 



PoEcilonota montanus new species. Plate V, figs. \ and 2. 



Form oblong, oval, flattened ; antenns greenish ; front very roughly sculp- 

 tured, clypeus purplish-bronze and broadly arcuate ; vertex with a smooth 

 elevated space extending a short distance towards the clypeus; down the 

 center of this space runs an impressed line. Ground color of the dorsal 

 surface very dark brassy-green, almost black, due to presence of numerous 

 white hairs and small tufts of a cotton-like substance on the unpunctured areas 

 the beetle presents a grayish appearance. Thorax with a median, elevated, 

 smooth line which broadens at the anterior and posterior margins and is 

 flanked on each side at the middle by an irregular, elevated space, entire sur- 

 face roughly sculptured due to coarse, deep, irregular punctures with elevated 

 smooth margins, the punctures larger near the lateral margins. Scutellum 

 large, transverse and angulate behind. Elytra with the first five intervals 

 convex, entire and prominent, others more or less prominent but interrupted. 

 The whole surface has a very fine granulate appearance ; punctures are few 

 and widely scattered, not prominent. Beneath greenish-bronze; prosternum 

 densely clothed with long, white hairs. Last ventral segment (PI. VII, fig. 9) 

 with a deep, wide, quadrate emargination. 



Length of male 15.00 mm.; width 6.50 mm. 



Length of female 17.50 mm.; width 7.75 mm. 



Female differs by its larger size, darker color, basal joints of antenna 



