Memoirs on the coleoptera

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MEMOIRS ON THE COLEOPTERA
sides, which are rather thick; scutellum similar but more sunken,
carinate; elytra three-fifths longer than wide, widest at the middle,
parallel, with very broadly, evenly arcuate sides, rapidly evenly
ogival posteriorly, the humeri somewhat prominent and nearly
right through rounded; surface with three narrow, strongly and
abruptlyelevated costae, the sutural and lateral margins also elevated,
the first and second costse coalescent at the middle of the basal
margin and also at the summit of the convex declivity, the combined
ridge joining the lateral margin nearer the apex, the third costa
joining the lateral margin near the base, or tending thereto, its posterior
end free; depressed intervals finely, densely rugose and opaque;
abdomen with rather strong though sparse punctures. Length (c?)
15.0 mm.; width 6.8 mm. Mexico (Toluca), H. F. Wickham.
*tolucana n. sp.
6 Body in great part similar in form to laciniata but rather stout, black,
opaque, very moderately convex and with short flavate pubescence;
prothorax one-half wider than long, narrowed anteriorly, the sides
rounded, incrassate and reflexed, the apical angles acute; base
truncate, the hind angles " nearly right"; surface unequal, densely
punctate, narrowly carinate medially; elytra wider than the prothorax,
posteriorly declivous and acuminate, the margin extending
to the tip; suture and three costae on each, the inner extending two-
thirds and the others three-fourths from the base acutely elevated.
Length 15.0 mm. San Diego trip, (probably from some point
on the southern boundary of Arizona). [Euschides liratus Lee.].
lirata Lee.
7 Body sparsely pubescent, sordid black; prothorax slightly shorter
than wide, rather flat, the sides broadly rounded and narrowly
reflexed, with the [posterior] angles acute, not at all densely punctate;
elytra elongate-oval, sparsely punctate, the lateral margin
serrulate, this as well as two discal costae on each, the internal of
which is entire, the outer abbreviated at each end, acutely elevated.
Length 12.5 mm. Lower California (Cape San Lucas). [Pelecyphorus
sexcostatus Lee.] sexcostata Lee.
Lirata and sexcostata are still apparently represented by the
original unique examples, the former taken, I believe, by the Mexican
Boundary Expedition, being, as figured by Horn (Rev. Ten. -
plate), a species much larger and stouter than laciniata and without
indication of the basal abbreviation of the outer discal carina so
prevalent throughout the genus. The single row of perforate
punctures along each of the intercarinal spaces in laciniata, and
the dense basal pronotal fringe of pubiform tomentum are re-
markable characters in that species, the latter still more developed
in the Mexican bibasalis, and, if they were at all obvious in lirata,
would undoubtedly have been alluded to by LeConte. There is