Memoirs on the coleoptera

TENEBRIONHLE 167
marginal carina extending within a sixth of the tip, the dorsal costa
ending near the suture at about a third from the tip; antennae and
legs very long. Length (c?) 10.0 mm. Lower California. [Pelecyphonts
couiiivens Lee.]
connivens Lee.
Body somewhat as in bifurca though smaller and much more slender,
black, dull and densely coated with earthy matter through which
the short stiff and simple bristle-like setae protrude; head impressed
as in bifurca but more feebly, the antennae more slender; prothorax
slightly wider than long, the subparallel sides evenly and more
strongly arcuate, not sinuate anteriorly, where the angles are less
produced anteriorly but acute, the basal angles abruptly and strongly
everted and finely acute, very prominent; surface very tumid medi-
ally, the tumidity divided longitudinally by the broadly, deeply
impressed and entire median line, which narrows toward apex and
base, the lateral slopes of the tumidity feebly, longitudinally im-
pressed at lateral fourth of the width, these furrows not quite attaining
apex or base; sides more broadly and shallowly concave than
in bifurca; punctures coarser, dense but not so muricate, the stiff
short hairs fulvous; base similar; elytra not at all wider than the
prothorax, three-fourths longer than wide, gradually very acute
behind the middle, where the sides are arcuate, gradually converging
and straighter to the similar basal angles, which, however, are far
within the thoracic angles; surface flat, though similarly steeply
declivous between the costa and the margin, which is as in con-
nivens; suture narrowly elevated in a way not at all noticeable in
bifurca, the short stiff blackish setae differing greatly from those of
bifurca in being simple and not squamiform and in being evenly
distributed, abdomen closely perforato-punctate, not at all asperulate;
legs relatively longer and much stouter. Length (o") 9.0 mm.;
width 3.4 mm. Lower California (Cape San Lucas), Chas. Fuchs.
tantilla n. sp.
Body still more slender than in tantilla, deep black, not coated with
earthy matter, opaque, the elytra slightly shining; head similar
though more deeply impressed, the short erect bristles dark; prothorax
similar but about as long as wide, the apex very nearly as
wide as the base and more deeply sinuate, with the acute angles more
anteriorly projecting; sides moderately arcuate, becoming feebly
sinuate anteriorly, the basal angles even more obliquely everted and
becoming finely spiculiform toward tip; surface similar, the median
entire sulcus even broader and deeper, the lateral moderate; side
margins more crenulate and without so distinct a fringe of short
erect hairs; elytra more elongate, scarcely as wide as the prothorax,
nearly twice as long as wide, the ridges as in tantilla, the humeri not
obtusely angulate as in that species but minutely, denticularly
prominent laterally; surface nearly flat, with rather coarse perforate
punctures disposed in a few nearly even longitudinal series, the
interspaces scarcely at all punctulate but clothed loosely with rather
long and closely recurled stiff but nearly simple dark yellow hairs ;
abdomen more coarsely, very densely cribrate, the punctures simi.