1852.) 145 
One specimen, Missouri Territory. Much smaller and broader than S. fascia- 
tum, piceous black, finely pubescent, thorax black in the middle, margin testa- 
ceous and diaphanous at the sides and apex; base sinuated. Elytra not wider 
than the thorax, finely not very densely punctulate, marked witha yellow lunate 
spot behind the middle; apex broadly rounded, margined with yellow, which 
extends a short distance along the sides. Body beneath black, feet dark 
piceous. 
7. S. decolor, ellipticum, rufo-piceum, subtiliter pubescens, thorace 
pallidiore medio obscuro, elytris subtiliter punctulatis, pedibus flavis. Long. ‘03. 
Two specimens, San Jose, California. Elliptical, rufo-piceous, finely pubes- 
cent. Thorax paler, diaphanous at the sides, dark in the middle, almost semi- 
circular, slightly sinuate at the base. Elytra very finely punctulate, rounded at 
the apex. Body beneath piceous, abdomen paler; feet yellowish. 
8. S. misellum, latius ellipticum, rufo-piceum, valde punctulatum, 
brevissime pubescens, thorace valde marginato, medio obscuro, pedibus testaceis. 
Long. :03. 
Two specimens, New York. Broader than most of the preceding species, very 
slightly clothed with extremely short hair, entirely rufo-piceous, and strongly 
punctulate. Thorax semicircular, strongly margined, paler than the elytra, 
diaphanous at the sides, darker in the middle, base finely margined, scarcely 
sinuate. Elytra broadly rounded at the apex; body beneath rufo-piceous, feet 
testaceous. 
9.5. scitulum, late ellipticum, nigrum, subtilissime pubescens, tho- 
race flavo, puncto antico obscuro, elytris subtiliter punctulatis, fascia postica 
lata, margine apicali pedibusque flavis. Long. -025. 
Colorado River, California. Smaller than the others, and more broadly oval, 
very finely pubescent. Thorax yellow, semicircular, with a dark spot near the 
anterior margin. Elytra black, very finely punctulate, with a broad testaceous 
fascia behind the middle, scarcely reaching the sides, apex rounded, narrowly 
margined with yellow. Body beneath black; abdomen testaceous, feet yellow. 
Description of a New Species of TromBipium. 
By Joun L. Le Conte, M. D. 
T. magnificum, ovatum, postice angustatum et obtusum, densissime 
a ee pedibus subequalibus, rostro conico, apice obtuso. Long. 
-32,—lat. -23. 
Texas, Dr. S. W. Woodhouse. This fine species is remarkable for its great 
size, being equal to T. tinctorium. It belongs however to a different 
division of the genus, the eyes being placed immediately above the first pair of 
legs. The rostrum is conical, and obtuse at the apex. The palpi are conical, 
more than three times as long as the rostrum, thick at the base; the terminal 
hook is longer than the penultimate joint, and is glabrous only at the apex; the 
inferior appendage is a little longer than the hook, and very pilose, it appears 
rounded at the extremity. The feet are two-thirds the length of the body, the 
first and fourth pairs a little longer than the intermediate ones. 
The body is soft, somewhat trapezoidal, narrowed and obtusely rounded 
behind, less rounded in front, with the sides slightly sinuous in the middle. The 
color is dark cinereous, above and beneath covered with very fine fur which is 
of a bright vermillion color, becoming gray at the base of the legs. In the best 
preserved specimens, the upper surface is irregularly impressed, resembling the 
convolutions of the brain. 
