138 [Aueust, 
rior margin. Elytra tolerably densely, and more coarsely punctured than the 
thorax, yellow, with a large common sutural black vitta, which fits to the spot 
on the thorax, and is gradually narrowed behind, reaching nearly to the tip. 
Body beneath black, densely and not finely punctured : abdominal plates scarcely 
shorter than the first segment, reaching laterally to the parapleure. Feet yel- 
low, thighs a little obscure. 
13. S. suturalis, rotundato-ovalis, modice convexus, subtilius punctatus, 
pubescens, niger, capite thorace elytrisque obscure testaceis, illo macula 
maxima basali, his vitta suturali lateribusque infuscatis, tibiis tarsisque tes- 
taceis. Long. :08. 
One specimen, Colorado River, California. Closely allied to the last, but is 
less coarsely punctured. Head testaceous, very finely punctured. Thorax nar- 
rowed in front, but little rounded on the sides, margined at the base, which is 
truncate at the scutellum, and very slightly sinuate each side: finely not densely 
punctured, testaceous, with a very large black spot occupying nearly all the 
base, and extending almost to the apex. Elytra a little more’coarsely punctured 
than the thorax, testaceous, with a common black sutural vitta broad at the 
base, and gradually narrowed behind, reaching nearly to the apex, sides from 
the middle to near the apex blackish: epipleure testaceous. Body beneath 
black, densely punctured; abdominal plates shorter than the first segment, 
hardly extending as far as the parapleure. Feet piceous, tibie and tarsi 
testaceous. 
B.—2—d. 
14. S.fraternus, rotundato-ovalis, convexus, niger, pubescens, capite, 
thoracis lateribus, pedibusque testaceis, elytris valde punctatis, apice late rufis. 
Long. :99 
Middle States. Rounded, a little oval, convex, black shining, covered with 
fine gray hair. Head and thorax finely punctulate, yellow, the latter with a 
large basal black spot ; sides rounded, base margined, truncate at the scutellum, 
and oblique each side. Elytra densely punctured, with a transverse testaceous 
margin at the apex, which covers about one-fifth of the surface. Body beneath 
black, densely punctured, abdominal plates shorter than the segment, smooth at 
the margin, extending as sat as the parapleure. Feet testaceous, margin of the 
abdomen rufous. 
15. S. he morrhous, rotundato-ovalis, convexus niger, pubescens, capite 
thoracis macula laterali, pedibusque testaceis, elytris grosse punctatis, apice 
late rufis. Long. -09. 
This species is very similar to the last, but the punctures of the elytra are 
larger andless dense. I have only a single specimen from New York. 
Rounded, slightly oval, convex, black shining, finely pubescent. Head testa- 
ceous, finely punctulate. Thorax black, with a yellow lateral spot reaching 
from the anterior margin nearly to the base, which is truncate at the scutellum, 
and oblique each side, marginal line distinct, sides rounded. Elytra forming a 
distinct angle with the sides of the thorax, coarsely and not densely punctured, 
with a broad testaceous apical margin covering about one-fifth of the surface. 
Body beneath as in the last, but the sides of the venter are scarcely testaceous. 
Feet testaceous. 
The apical spot is not sufficiently large to permit this species to be referred 
toS. Brullei Muls. 934. 
16. S. chatchas, rotundato-ovalis, convexus, niger punctatus, pubescens, 
capite thoraceque testaceis, hoc macula basali nigra, elytris margine apicali, 
ano pedibusque rufo-testaceis. Long. °09. 
Muls. 986. 
Atlantic States and Missouri Territory. Broad oval, convex, black, shining 
and moderately pubescent. Head and thorax finely punctulate, yellow, the 
latter with a small basal black spot reaching nearly to the middle; very much 
narrowed in front on the sides, base obtuse at the scutellum, oblique each side, 
marginal line distinct. Elytra somewhat plumbeous, densely but not deeply 
