1852.) 137 
narrower, the leteral testaceous margin is very narrow; the body beneath and 
the thighs are entirely black, the tibie and tarsi piceous. The abdominal plates 
are as in the last, but seem to reach the posterior margin of the segment near the 
middle. 
B.—1. 
8. S.americanus, breviter ovatus, ater, minus dense punctatus, pubescens, 
capite, thoracis lateribus, abdomine, pedibus, elytrorum apice brevi testaceis. 
Long. :12. 
Muls. 965. 
New York and Pennsylvania. A large species with short ovate black body. 
Above distinctly, not densely punctured, covered with coarse gray hair. Head 
testaceous. Thorax usually black, with testaceous sides, sometimes entirely 
testaceous, narrowed in front, and rounded on the sides; base margined, slightly 
truncate at the scutellum, scarcely sinuous each side. Elytra with a distinct 
testaceous apical margin. Beneath black, coarsely punctured, apex and sides of 
the abdomen testaceous, feet yellow.. The abdominal plates reach nearly to the 
extremity; their margin then suddenly turns upwards and becomes obsolete. 
9. Sw.nebulosus, rotundato-ovalis, convexus, confertim punctatus, subtus 
niger, supra testaceus, griseo-pubescens, thorace medio obscuro, elytris irregu- 
lariter parce piceo-notatis, pedibus flavo-testaceis. Long. :09. 
One specimen, found at the Colorado River, California. Body rounded oval, 
convex, coarsely and somewhat densely punctured, above testaceous, densely 
pubescent. Thorax but little narrowed in front, base truncate at the scutellum, 
and finely margined, oblique, but not sinuous on each side; the disc is darker each 
side of the medial line. Elytra forming a distinct angle with the sides of the 
thorax, irregularly mottled with small piceous dots. Body beneath black, 
coarsely punctured, anus testaceous. Abdominal plates reach nearly to the apex 
of the segment, their margin then turns upwards, but does not reach the base. 
Feet yellowish testaceous. 
B.—2—c. 
10. S. pallens, rotundato-ovalis convexus, subtus niger supra testaceus, 
pubescens, elytris subtilissime punctulatis, pedibus flavo-testaceis. Long. °08. 
San Francisco, on Spirea. Rounded, slightly oval, convex, above yellow tes- 
taceous, finely densely pubescent, thorax not visibly punctured, rounded on the 
sides, base very finely margined, slightly rounded. Elytra very finely punctu- 
late, and very slightly rugous. Body beneath black, finely densely punctulate, 
abdomen posteriorly margined with testaceous ; abdominal plates entire, shorter 
than the first segment, laterally not extending to the parapleure: their margin 
is smooth and shining. Feet yellow. 
11. S. debilis, rotundato-ovalis, testaceus, pubescens, elytris minus dense 
punctulatis, pedibus flavo-testaceis. Long. -05, 
One specimen, San Jose, California. Rounded, slightly oval, convex, above 
yellow testaceous, finely densely pubescent. Thorax very finely punctulate, 
rounded on the sides, margined at the base, which is slightly rounded. Elytra 
finely and distinctly punctured. Body beneath darker, finely punctulate, tip of 
the abdomen and feet pale yellow testaceous. (Abdominal plates not examined.) 
12. S. cinectus, rotundato-ovalis, modice convexus, punctatus, longius pubes- 
cens, niger, capite, pedibus, thorace elytrisque testaceis, illo macula basali, his 
vitta suturali postice angustata nigra. Long. -09. 
One specimen, New Orleans, Mr. Guex. Seems to resemble 8. Lewii and 
floralis Muls., but differs from the first by its entirely yellow feet, and from the 
second by its black abdomen. Rounded, slightly oval, moderately convex, 
finely pubescent. Head yellow, densely punctured. Thorax narrowed in front, 
rounded on the sides, base margined, truncate at the scutellum, obliquely 
sinuous each side; punctured, more densely at the sides, yellow, witha large 
black spot, occupying two-thirds of the base and extending nearly to the ante- 
