1852.] 137 



narrower, the kteral testaceous margin is very narrow ; the body beneath and 

 the thighs are entirely black, the tibiae 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, elytrorura apice brevi testaceis. 

 LonS' '12. 



Muls. ge-"). 



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. S. nebulosus, rotundato-ovalis, convexus, confertim punctatus, subtus 

 niger, supra testaceus, griseo-pubescens, thorace medio obscuro, elytris irregu- 

 lariter parce piceo-notatisj 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. p a 1 1 e n s, rotundato-ovalis convexus, subtus niger supra testaceus, 

 pubescens, elytris subtilissime punctulatis, pedibus flavo-testaceis. Long. -OS. 



San Francisco, on Spiraea. 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 parapleurae : their margin 

 is smooth and shining. Feet yellow. 



11. S. d eb ills, rotundato-ovalis, testaceus, pubescens, elytris minus dense 

 punctulatis, pedibus flavo-testa,ceis. 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. c i n c t u s, 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 S. Loewii 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, with a large 

 black spot, occupying two-thirds of the base and extending nearly to the ante- 



