Memoirs on the coleoptera

7
BYRRHID.E 49
sides and gradually arcuately acute behind but with the lustre not
quite so polished, the micro-reticulation somewhat more evident
throughout, notably coarse and polygonal on the elytra though very
feebly denned; abdomen shining, finely, sparsely punctate, the last
segment coarsely, except, at base, but not densely, having (c^ 1
) a
large posteriorly pointing equilatero-triangular central space of dense
punctures, somewhat as in analis, but not impressed, more in-
definitely limited and clothed with shorter, much less conspicuous
pale hairs. Length 1.4-1.6 mm.; width 0.65-0.73 mm. Southern
California evanescens n. sp.
Lustre rather dull, the outline notably short and broad though rather
acutely ogival at apex. Black, convex, the vestiture coarse, close, conspicuous
and persistent, obscure fulvous, distinctly though indefinitely
mottled with cinereous; head with pliciform sculpture which
is replaced by isolated coarse punctures on the occiput: prothorax
short as usual, the strongly converging sides straight, the surface
with a minutely striiform line basally, the punctures fine, well
separated, not feebler toward the sides as usual but evidently deeper,
a little larger and somewhat less widely separated, with the inter-
spaces not at all reticulate but smooth and polished; elytra evidently
less than a fourth longer than wide, the sides parallel, feebly arcuate
and rounding at the humeri, gradually rounding and converging
behind the middle, the apex somewhat acutely ogival, the punctures
a little larger than those of the pronotum, rounded but not very
deep, separated by rather less than twice their diameters; abdomen
finely, rather sparsely punctate, the last segment deeply and densely
almost throughout, without a distinct spot of condensed punctures
and pubescence. Length 1.65-1.8 mm.; width 0.8-1.05 rnm.
North Carolina, Florida and Louisiana. [Limnichus ater Lee.,
Proc. Acad. Phila, 1854, p. 117] ater Lee.
Lustre strongly shining, more narrowly oval and smaller in size, the
vestiture less close-set and much less conspicuous, more easily denuded
8
8 Outline oval, rounded at the sides, gradually acutely ogival behind
from rather before the middle of the elytra, polished, deep black,
without any sort of metallic lustre, the sparse vestiture coarse and
rather long, mingled fulvous and cinereous; head with pliciform sculp-
ture, becoming not very large, widely isolated punctures posteriorly;
prothorax short, with the rapidly converging sides straight, having
a finely striiform median line from the middle nearly to the base,
the punctures rather fine but deep, well separated, becoming even a
little stronger but scarcely at all closer laterally, where the inter-
spaces are highly polished and without trace of micro-reticulation;
elytra in outline nearly as in ater but rather more elongate, fully a
fourth longer than wide, the punctures a little larger than those of the
pronotum but not so deep, separated by more than twice their own
widths, evanescent as usual laterally and apically; abdomen convex,
shining, finely, sparsely punctate, the last segment more coarsely
punctate only toward the sides and about the apex, without a definite
T. L. Casey, Mem. Col. Ill, Feb. 1912.