Memoirs on the coleoptera

336
MEMOIRS ON THE COLEOPTERA
distinguish the two very readily. The type may be outlined as
follows :
*Zalophia spissicornis n. sp. Rather stout, moderately convex, deep
black throughout, excepting the entire inner costa and the narrower outer
costa to a little before the middle, scarcely at all shining, the pubescence
above everywhere close, long on the prothorax above and beneath, very
short on the elytra, deep black throughout; on the under surface of the
hind body it is sparse, the latter polished, the punctures becoming fine
and dense only at the extreme sides; head very densely, finely sculptured,
with a fine tumescent smooth line at base only; antennae (cf) about a
fourth longer than the body, feebly tapering and flattened distally, the
third joint nearly a fourth longer than the fourth, which is a little shorter
than the equal five to nine, tenth very little shorter but rather abruptly
narrower, the eleventh but little longer, the appendage short and scarcely
traceable; prothorax two-fifths wider than long, the truncate apex but
little narrower than the base, minutely, deeply constricted at the margin;
sides broadly subangulate to the tubercle, the surface rather finely, ex-
fine and tumescent but not im-
tremely densely punctate, with a very
punctate median line in more than apical half, circularly concave at
the middle basally; scutellum very acute, much longer than wide, punctate,
but not densely pubescent; elytra cuneiform, at base much wider
than the prothorax, two and one-half times as long as wide, rather
finely, very densely punctate, the inner ridge notably large, smooth and
strong; fifth ventral sinuate medially at apex. Length 14.5 mm.;
width 4.2 mm. Ecuador (Babahoyo at foot of Andes).
Recognizable by the dull and intensely black integuments,
bristling black pubescence, very large and entire inner elytral ridge
and other characters as related above.
Crossidius Lee.
This genus is a very large one and the species are generally
well differentiated. Numerous forms still unpublished exist in all
the larger collections; the following comprise about all the nonde-
scripts that are before me at present:
Crossidius plagiatus n. sp. General form and coloration as in punctatus
but a little larger and stouter, the two fine impunctate lines disappearing
apically on each elytron more evident; antennae (cf) more
distinctly longer than the body, otherwise nearly similar; prothorax much
less transverse and not so densely or conspicuously pubescent; elytra
nearly similar in form and sculpture but with the black sutural marking
different, not elongate-fusiform and narrowed before and behind as in
punctatus (cf ), but parallel and straight at the sides, obtusely, angularly
produced along the suture anteriorly, rounded behind, the suture narrowly
black to the apices; abdomen much less densely punctate and
pubescent, the segments black, finely pale at their apices, the last two