Horn.] °"±0 [June 20, 



S. sphaeroides, Lee. Bost. Journ. V., p. 78, pi. 6, fig. 5 ; Mars. Mon., 

 1855. p. 719, pi. 20, fig. 154 ; bigener, Lee. loc. cit., p. 77, pi. 6, fig. 3. 



Surface bronzed or cupreous. Head distinctly margined in front, 

 smooth, and with a faintly marked chevron. Thorax sparsely punctured 

 in front and at the sides, basal margin more coarsely punctured, disc 

 smooth. Elytra punctured at apex, punctured space extending to the 

 middle along the suture ; external subhumeral moderately long, humeral 

 finely impressed, not uniting with the internal subhumeral ; first dorsal 

 long, extending four-fifths to apex, and sinuate at tip ; striae 2-3-4 

 gradually shorter, the latter arching at tip, joining the sutural which is 

 entire. Propygidium moderately but not densely punctured, Anterior 

 tibia? coarsely denticulate, the apical three teeth much shorter than the 

 others ; middle and hind tibia? biseriately finely spinulose. Length .10- 

 .14 inch ; 2.5-3.5 mm. 



Occurs in the Middle States and Canada, on the banks of streams or on 

 the sea shore. 



S. seminitens, Lee, New Species, 1863, p. 61. 



Surface bronzed, moderately shining. Head distinctly margined, front 

 anteriorly rugulose. Thorax punctured and at sides finely strigose, base 

 coarsely punctured, impunctured space short and very transverse. Elytra 

 with large space moderately coarsely and densely punctured, extending 

 in front of middle, and enclosing the tips of the stria?, scutellar space 

 smooth, shining, interstrial space, sub-opaque ; external subhumeral 

 moderate, parallel with the marginal, humeral obsolete, internal sub- 

 humeral moderately impressed ; first dorsal extending four-fifths to apex, 

 stria? 2-3-4 gradually shorter, the latter arching at base, joining the 

 sutural which extends two-thirds to apex. Pygidium and propygidium 

 moderately densely and coarsely punctured. Legs reddish-brown, 

 tibiae as iu the preceding species. Length .12 inch ; 3 mm. 



( »ne specimen, Nebraska. The interstrial space in this as in the pre- 

 ceding species, is impunctured. 



S. ferrugineus, Mars. Mon., 1855, p. 712, pi. 19, fig. 148. 



Oblong oval, moderately convex, rufo-ferruginous shining. Head 

 smooth, front margined, and with a very faintly impressed chevron. 

 Thorax very sparsely and finely punctured at the apex and sides, and a 

 few coarser punctures along the base. Elytra very sparsely punctured at 

 apex, punctures extending slightly in front of middle, external sub- 

 humeral stria absent, oblique humeral finely impressed, internal sub- 

 humeral short, disconnected ; first dorsal extending to middle, second to 

 two-thirds, third slightly longer than the first, fourth shorter, arching at 

 base, joining the sutural which extends slightly beyond the middle, be- 

 coming finer at apex. Pygidium moderately convex, finely punctulate. 

 Anterior tibia? 5-6 denticulate, hind tibiae biseriately spinulose. Prester- 

 num carinate, stria? approximate. Length .09 inch ; 2.25 mm. 



This species is easily recognized from this excellent description and 



