Memoirs on the coleoptera

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 distance
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 impression
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,