Memoirs on the coleoptera

H2 MEMOIRS ON THE COLEOPTERA
humeri slightly evident, the feeble inner costa distinct and joining
the outer near apical fifth, the rugae numerous, close-set and strongly
shining, the interspaces not so densely opaque as in snowi, nearly
smooth; abdomen opaque, nearly similar. Length (cf ) 15.0 mm.;
width 6.5 mm. Arizona (San Bernardino Ranch, Cochise Co.,
3750 feet), E. G. Smyth subtenuis n. sp.
The species described under the name morbillosus, by LeConte,
is generally identified as any one of the forms from corporalis to
subtenuis in the above table. I have selected to represent that local
Sonoran species, a specimen of rather large size and deep black
opaque integuments, with rather fine, tortuous and widely separated
rugae, collected by Prof. Snow in the Baboquivari Mts.; it has a
very distinct and broadly subangulate sinus opposite the scutellum.
These numerous allies of morbillosus are all built upon the same plan,
presenting very few diversities of structure and are therefore difficult
to define recognizably, though readily separable on sight.
Group II Type carinatus Lee.
Basal angles of the prothorax more or less briefly, obliquely prominent
and acute 2
Basal angles right, not rounded but not at all prominent 3
2 Body stout, convex, deep black, subopaque throughout, the elytra
alutaceous; head feebly impressed, finely and sparsely punctate,
the minute hairs erect, dark and indistinct; prothorax very nearly
as long as wide, parallel, widest slightly before the middle, the sides
evenly and moderately arcuate, becoming slightly sinuate very
near the basal angles; base transverse, slightly sinuate near the angles;
surface convex and longitudinally, sharply crested medially, the
crest obsolete basally, rather abruptly, feebly reflexed at the sides,
the punctures small and separated anteriorly, large and coalescent
basally, equal but rather coarse and contiguous laterally, the reflexed
edge impunctate but granulate and plicate, very thick, feebly crenu-
late; elytra two-thirds (cf) to four-fifths (9) wider than the prothorax,
fully one-half longer than wide, evenly oval, widest at the
middle, deeply constricted just behind the basal margin, the ends of
which are laterally prominent but not very acute, not so strongly
as in the morbillosus section ; surface evenly convex, finely and feebly,
transversely rugulose, the outer costa feeble, the inner almost to
quite obsolete, the former extending only to the summit of the
convex declivity, the side margin almost attaining the tip; abdomen
more or less rugulose laterally, rather finely but strongly, somewhat
sparsely muricato-punctate, each puncture with a very small dark
and inconspicuous hair; male and female similar, except that the
prothorax is a little larger and the legs notably longer and thicker
in the former. Length (cf , 9 ) 20.0-22.0 mm.; width 10.0-11.3 mm.
Southern California (near Colorado Desert), G. \V. Dunn.
carinatus Lee.