Memoirs on the coleoptera

CERAMBYCID.E 239
A Similar but still more elongate, with narrower and less transverse
prothorax, less approximate eyes and still smaller head, the scutellum
larger, broader and more rounded; eyes separated by two-
thirds their own width; elytra fully twice as long
as wide; tarsi
similar. Length ( 9 ) 41.0 mm.; width i6.omm.; length and width
of the prothorax 6.0X12.3 mm. Locality unrecorded.
prolixus n. subsp.
Form much stouter, larger, black, the elytra rather abruptly dull rufous
in apical two-thirds; head more developed, two-thirds as wide as
the
the
prothorax, the eyes separated by three-fourths their width,
mandibles notably larger and thicker; antennae much shorter,
scarcely extending to basal third of the elytra, the last joint as long
as the preceding but narrower; prothorax relatively much narrower
and less transverse though similar otherwise, the scutellum similar;
elytra much broader, with the arcuate sides more narrowly rounding
behind, nearly two-fifths wider than the prothorax, two-thirds
longer than wide; tarsi and metasternum similar; body beneath
black, the abdomen red. Length (9 ) 47-O mm.; width iS.o mm.;
length and width of prothorax 6.7X12.5 mm. Indiana.
bicolor n. sp.
13 Species of the Atlantic regions. Body rulo-piceous in color, shining,
the prothorax sparsely punctulate, transverse though less so than
in pocularis, scarcely more than twice as wide as long, strongly
bisinuate at base, the lateral teeth rather prominent, the posterior
angles right; elytra wider than the prothorax, coarsely punctate,
the raised lines obsolescent; antennae (cf ) slightly shorter than the
body, stout, imbricate, the joints obliquely sinuate, prominent
internally. Length 35.0 mm. Georgia obliquicornis Lee.
Species of the Sonoran and Pacific regions 14
14 Last antennal joint normal, not at all appendiculate 15
Last antennal joint (cf 1
) extremely long, slender, sometimes appendiculate
22
15 Apical margin of the prothorax transverse, not or scarcely at all
sinuate, the finely pointed apical teeth projecting without sensible
obliquity and nearly in line with the apical margin; basal angles
prominent and acute, obliquely truncate postero-externally 16
Apical margin broadly but sensibly sinuate, anteriorly prominent at the
sides and thence posteriorly oblique to the apex of the anterior
16
teeth
Head and prothorax relatively unusually developed
19
for this group;
body large, rather stout and convex, subparallel, the sides of the
elytra converging slightly behind to the rather broadly rounded
apices; color piceo-castaneous throughout, rather shining; head
almost half as wide as the elytral base, the tempora but feebly
converging behind the rather feebly convex eyes, which are separated
by three-fourths their width, large, with very moderate emargination;
antennae (cf) very stout and imbricate basally, two-thirds
as long as the body, the last joint fully as long as the preceding but
narrower, four times as long as wide, with straight and parallel
sides in apical half, the lower side thence oblique and straight to