BYRRHID.E 13 



shining, not at all chagrined; under surface coarsely cribrate as in 

 fonnosiis, the tarsi notably shorter and still more slender. Length 

 3.25 mm.; width 1.9 mm. California (Hoopa Valley, Humboldt Co.). 



satelles n. sp. 



The last two species are mutually rather closely allied, but may 

 be distinguished by the sculpture as well as the more obtuse elytra 

 of satelles. In formosus the coarse elytral punctures become con- 

 tiguous, with the surface opaculate, toward base, while in satelles, 

 though coarse and becoming very slightly closer basally, they are 

 always clearly isolated, with the interstices shining like the rest of 

 the surface. 



The much smaller and practically nude scutellum of this genus is 

 another element distinguishing it from Morychns and allies. In 

 the next genus the scutellum is rather better developed, but is 

 relatively not so large as in Morychus and differs in being nude and 



not densely pubescent. 



Eusomalia n. gen. 



This genus is represented thus far by a single splendid species, 

 by far the largest of the Pedilophorini and very aberrant in sculpture 

 and ornamentation. Structurally it differs from Listemus in having 

 the deep fossae for the hind legs end posteriorly in a straight trans- 

 verse line, parallel to the apex of the first ventral but at some dis- 

 tance therefrom; the tarsi are similarly free and are lobed beneath. 

 The type may be described as follows: 



Evenly and broadly oval, very convex, strongly shining, the pubescence 

 of the upper surface fine, decumbent, excessively short and sparse 

 and scarcely discernible, still less evident on the virtually glabrous 

 under surface; upper surface bronzed anteriorly, the elytra with 

 broad vittae, lost at the sides, alternately deeply but not densely, 

 toward the sides coarsely, punctured and bright metallic green in 

 color, and equally wide, minutely, sparsely punctured and bright 

 coppery in lustre; under surface and legs black throughout, the tarsi 

 scarcely paler; head strongly, not densely punctate, convex, with 

 a feeble indentation on the median line at a little behind the line of 

 the eyes; antennae dark piceo-testaceous, of the usual form in the 

 tribe though only moderately thickened distally; prothorax more 

 than twice as wide as long, narrowed from base to apex, with nearly 

 straight sides and acute angles, the apical produced; surface evenly, 

 rather finely and sparsely punctate, more coarsely and slightly more 

 closely toward the sides, where there is a broad gutter-like impres- 

 sion along the side margins, becoming obsolete basally; scutellum 

 a little longer than wide., acute, flat, nearly nude; elytra a fourth 

 longer than wide, oval, obtuse and very strongly declivous behind, 



