Memoirs on the coleoptera

TENEBRIONID.E 151
the punctures conspicuous; antennae as long as the prothorax (cf)
or materially shorter ( 9 ) ;
long, widest at the middle,
prothorax fully three-fifths wider than
the sides strongly arcuate, rather more
convergent and straighter basally than apically, the apex broadly,
feebly sinuate and generally feebly, angularly prominent at the
middle of the sinus, the angles blunt though slightly everted; base
about as wide as the apex, the angles very obtuse and somewhat
blunt, not bordered internally by a basal sinus; surface broadly,
evenly convex, feebly flattened medially at base, rather shining,
finely but deeply, sparsely punctate, the sides rather abruptly very
narrowly explanate and more coarsely but not densely or rugosely
punctate, the edge with a narrow convex bead; elytra as wide as the
prothorax (cf ) or a little wider (9 ), twice as long as wide, widest
at the middle, the sides rather distinct and bluntly acute basally,
evenly arcuate, the large apical lobe very feebly delimited; ends of
the basal margin parallel and slightly tumid but not at all dentiform;
surface very convex, sparsely creased, minutely, sparsely punctate,
even; abdomen shining, finely creased and minutely punctate; legs
only moderate, slender. Length (cf, 9) 16.0-17.5 mm.; width
6.5-7.0 mm. California (south of San Francisco and at Monterey),
G. W. Dunn maritimus n. sp.
A Similar to the preceding but narrower and still more convex, almost
circular in section, the head with the coarse deep punctures very
dense and subconfluent before, well separated behind, the impression;
prothorax less transverse, barely one-half wider than
long, widest slightly behind the middle, the sides broadly rounded
and arcuate to the basal angles, which are still more obtuse,
rounded and almost obliterated; surface similar but still more
abruptly and narrowly concavo-explanate laterally, with finer
subcrenulate marginal bead; elytra much more than twice as long
as wide, similarly rather shining, even, finely and obsoletely
creased and very minutely, remotely punctulate but with the
margins basally scarcely so definite; legs and tarsi still shorter.
Length (9) 17-5 mm.; width 6.7 mm. California (south of San
Francisco), G. W. Dunn imulus n. subsp.
Body very slender, not quite so convex, more highly polished, deep black;
head alutaceous, more feebly impressed, the coarse deep punctures
rather close-set throughout, the fine ones distinct; prothorax one-
half wider than long, the apex very feebly sinuate, with the angles
bluntly rounded and not sensibly everted, as wide as the base, which
is almost evenly arcuate from side to side, the angles very obtuse
though evident; sides parallel, very evenly and strongly arcuate
throughout; surface nearly as in maritimus, shining, the fine sparse
punctures still more perforate and distinct, the sides less narrowly
explanate, strongly but not closely punctate, the marginal bead
much finer, elytra much more than twice as long as wide, about equal
in width to the prothorax, nearly as in maritimus but more polished,
the side margins basally very much more compressed, being really
acute and coarsely, feebly crenulate; abdomen alutaceous, finely,