OF WASHINGTON. 51 
The sexual characters are strongly developed, especially in 
the cT of many forms. Thus, in ludomcianus the metasternum 
and first abdominal segment are as deeply and widely concave 
as in /the (zqualis or ochreus group. The species are mostly large, 
from three-eighths of an inch in length to double that size. 
Rostrum subcylindrical, slightly narrower at extreme base, angles rounded. 
Elevated intervals irregular and interrupted; unelevated intervals 
interrupted by elevated shining black areas. Second abdominal 
segments of c? without transverse brush of setae. 
Thoracic vittae distinct. 
Lower surface coarsely punctate. Ventral concavity of cT mod- 
erately deep; metasternum with tuft of long, sparse, fine 
hairs nearly covering each side of posterior half. Tibiae 
sparsely fimbriate with short bristle-like hairs. U. S., 
pertinax Olivier. 
Lower surface more finely punctate. Ventral concavity of c^ 
more shallow; metasternum with a few minute hairs each 
side along posterior margin. Tibiae densely fimbriate with 
long hairs. Cal., Nev., Ore typha, n. var. 
Thoracic vittae subobsolete. Cal abrasus, n. sp. 
Rostrum moderately, subequally compressed, posterior angles of apex 
acute or subacute. scarcely produced. 
Thoracic vittae with curved or sinuous outlines. 
Second abdominal segment of c? with a short transverse brush 
of brown setae ; metasternum of cT with a lateral row of 
short setae each side in concavity. 
Elytra mostly opaque gray; odd intervals convex, black and 
shining; even ones thickly coated, flat except a narrow, 
more or less distinctly elevated, smooth black median line. 
Rostrum about three-fourths as long as thorax. 
E. U. S setiger, n. sp. 
Elytra mostly shining black ; even intervals nearly as convex 
and prominent as odd ones. 
Rostrum as long as, or five-sixths the length of, the 
thorax. La., Tex ludomcianus, n. sp. 
Elytra, except humeri and basal elevated portions of first and 
sometimes third intervals, covered with natural thick 
ochraceous coating which extends to the sides. Other in- 
tervals subequal. Body slender. Fla., peninsularis, n. sp. 
Elytra with natural thin subsericeous gray coating, black 
lines between the strial punctures. Body robust, rostrum 
shorter. Mich. Cal robustus Horn. 
Rostrum strongly compressed at apical fourth or fifth, and suddenly bent 
backward, anterior face of apex flat or slightly concave, posterior angles 
obtuse. Thoracic vittae subparallel. 
