Memoirs on the coleoptera

136
MEMOIRS ON THE COLEOPTERA
ing to apical fourth and moderately reflexed abdomen and ;
legs nearly
as in the preceding, the tarsi unusually long and moderately thick.
Length (cf ) 24.0 mm.; width 10.5 mm. Arizona (Huachuca Mts.),
implicans n. sp.
Side margins of the pronotum either deplanate or reflexed but always
strongly, closely and transversely rugose throughout
8 Elytra without discal carinae though sometimes with vestiges thereof,
smooth, the punctures sparse and mutually subsimilar . throughout. 9
Elytra finely closely rugose and punctate, the punctures intermingled with
much smaller, very irregular punctuation, each with three very evident
discal costules 10
9 Form elongate, obovate, slightly shining, finely, sparsely punctulate;
prothorax quadrate, with the sides rounded and crenulate, the reflexed
margin variolate; elytra slightly wider than the prothorax,
not very convex, the apex acute, moderately declivous; side margin
evanescent before the apex. Length 22.5 mm. Arizona (Gila
River). [Pelecyphorus marginatus Lee.] marginatus Lee,
A- Elongate-obovate, very moderately convex, deep black throughout,
slightly shining; head coarsely and rather closely punctate; antennae
(c?) long and thick, rather longer than the prothorax, with
joints nine and ten punctured throughout; prothorax fully one-half
wider than long, the sides parallel, strongly, evenly arcuate, very
finely and feebly crenulate, the surface broadly and distinctly convex,
finely but distinctly, sparsely punctate, the side margins
deplanate, not reflexed; basal pit moderate, broadly impressed;
elytra three-fourths longer than wide, widest at two-fifths from
the tip, the sides feebly converging thence basally and but very
slightly arcuate, rounded behind, the apical lobe broad and
moderately distinct; surface simply with sparse and very distinct
punctures, even, except that a distinct carinule diverges from the
acute margin at basal fourth, becoming gradually obsolete on the
declivity, the lateral margin ending abruptly at apical fifth;
abdomen minutely, sparsely punctulate, distinctly and more closelypunctate
apically; legs long, the tarsi long and rather stout.
Length (cf, 9) 24.0-25.7 mm.; width 10.2-11.8 mm. Three
specimens, without indication of locality duplicans n. subsp.
B Rather shining, similar in its very feeble convexity throughout but
relatively narrower and more elongate, black aboVe and beneath,
the elytra dark rufo-piceous; head similarly coarsely, rather
sparsely punctate but somewhat more sharply impressed trans-
versely, the vertex also more impressed medially; antennae longer
than the prothorax, the latter relatively much smaller than in
the preceding and about a fifth wider than long, the transversely
rugose reflexed side margins narrower, the sides much less and
feebly arcuate; surface with the sparse punctures much less small
than in the preceding, rather large for this section, somewhat in-
definitely and moderately impressed; elytra about twice as long
as wide, a third wider than the prothorax, widest but little behind
the middle, the large apical lobe as in duplicans, the surface with
8