AMERICAN COLEOPTERA. 179 



the hind legs of the % is very peculiar in this family, and well 

 worthy of description. 



S. deiltiger.— Slender, black, thinly clothed with extremely fine gray 

 pubescence. Head conrex, longer than wide, narrowed in front of the eyes, 

 truncate at base, with the hind angles strongly rounded, surface almost im- 

 perceptibly punctulate, front feebly impressed, with two ill-marked punctures 

 behind the impression, beneath finely punctured, gular stripe smooth. Antennae 

 blackish brown one half longer than the head, not thickened externally, outer 

 joints about as long as wide. Prothorax elongate-oval, finely punctured, dorsal 

 smooth stripe indistinct, slightly elevated near the base. Elytra as long as the. 

 prothorax, scarcely wider, similarly punctured, suture finely margined. Dorsal 

 segments imperceptibly punctulate; ventral segments very finely punctulate. . 

 Legs blackish brown, finely punctured. Length 3 mm. 



'^.— All the thighs thicker than in the 9; hind thighs bent, concave be- 

 neath, armed at the inner end of the concavity (just beyond the trochanter), 

 with a slender curved spine: curved edge thence nearly to the knee slightly 

 serrate; tibise very slightly flattened, broader towards the tip; inner margin 

 feebly sinuate, and finely serrate; second and third ventral segments broadly 

 flattened at the middle, sixth deeply triangularly emarginate. 



O. Hind legs normal; sixth ventral segment rounded at tip. 



Mass., Mr. Frederick Blanchard. The % is much less frequent 

 than the 9 . 



S. brunnipes. 



A very similar species with pale brown legs occurs in Vancouver 

 and California, and fortunately among my specimens there is one S 

 which differs entirely in sexual characters from that above described. 

 The legs are not stouter nor toothed in the % , and the second and 

 third ventral segments are not impressed. The fifth ventral is emar- 

 o-inate and broadly concave, with a tubercle at the middle of the 

 concave surface. The sixth is deeply emarginate and the seventh 

 broadly grooved. 



Another very similar one, of which only two $ 's have been ex- 

 amined, occurs in Michigan and Colorado. The legs are black, but 

 the elytra are much more finely and densely punctulate and nearly 

 opaque. Until I characters are observed, this species may properly 

 remain unnamed. 



SUNIUS Stephens. 



Cylindrical, convex, slender 2. 



Subdepressed, abdomen broader, antennte thickened externally; 3.3 mm.; 



Gala.- Or !• californicus ^t<s<m. 



2.— General color dark, elytra more coarsely punctured 3. 



General color pale ''• 



3. — Head less densely punctured beneath •!• 



Head more densely punctured beneath; 4—4.5 mm.; Atlantic region. 



2. prolixus Er. 



