May, '06] ENTOMOLOGICAL NEWS. 167 



MASTOGENIUS. 



Mastogenius impressipennis n. sp. 



Larger than subcyaneus, black, slightly bronzed, nearly glabrous, mod- 

 erately shining. Head with violaceous tint, rather strongly convex, 

 closely coarsely punctate, with a rather deep circular median fovea. An- 

 tennae just passing the hind angles of the prothorax, slender, serrate 

 from the fourth joint, second joint globose ; third small, much longer 

 than wide, subequal in length to the second and scarcely more than half 

 as long as the fourth ; intermediate joints fully twice as long as wide. 

 Prothorax two thirds wider than long, widest at apical third, sides feebly 

 arcuate and a little convergent behind, more strongly rounded in front, 

 hind angles very slightly obtuse ; surface evenly convex, a small fovei- 

 form impression near the middle of the side margin ; punctuation rather 

 coarse and very dense, with slight tendency to transverse strigosity ; a 

 very fine and faint median impressed line which reaches neither base nor 

 apex. Elytra as wide as the basal width of the prothorax. sides parallel 

 for three-fourths their length, surface a little more coarsely but less den- 

 sely punctate than the prothorax, rather deeply and narrowly impressed 

 along the basal margin, and each with three discal impressions, the an- 

 terior one subsutural. Beneath strongly closely punctate, less closely 

 toward the ventral apex. Posterior margin of hind coxal plates broadly 

 sinuate. Length, 2, X A mm- 



El Taste, Lower California (Beyer). 



Mr. Schaeffer has recently described two species of this 

 genus, viz. : reticulaticollis from Brownsville, Tex., and robustus 

 from Arizona. From the former of these impressipemiis may 

 at once be distinguished by the prothoracic and elytral sculp- 

 ture, and from the latter by the impressed front, less trans- 

 verse prothorax, and antennal structure. Subcyaneus differs 

 much by its smaller size, sparser punctuation, differently 

 formed prothorax, antennal structure, etc. Three other species 

 of the genus are known, viz.: Solieri Thorn., from Brazil, and 

 sulcicollis Philippi and parallehis Sol. from Chile. The last 

 mentioned differs from all of our species by the parallel-sided 

 thorax, which is as long as wide ; sulcicollis is separable by 

 the sulcate thorax, as its name indicates ; of solieri I have seen 

 no description. 



AGRILUS. 



Agrilus lucanus n. sp. 



Rather strongly cuneiform, color dark coppery bronze, elytra with 

 short fulvous appressed hairs, forming an obscure basal spot, a diffuse 

 median band, a narrower better defined fascia near the apical fourth, and 



