Horn.] d4ri [June 20, 



Occurs from the Middle States to Kansas. 



S. lucidulus, Lee. Ann. Lye. V., p. 170 ; barbipes, Mars. Mon., 1857, 

 p. 44S, pi. 11, No. 33, fig. 150 b. 



Oblong oval, black with slight tinge of bronze. Head distinctly mar- 

 gined, front smooth, with a well marked chevron. Thorax sparsely 

 punctured on the disc, more densely at the sides and apex, where they 

 become strigose. Elytra sparsely punctured at apex, punctures extend- 

 ing to the middle along the suture ; external subhumeral wanting, hume- 

 ral moderately impressed, joining the internal subhumeral which is 

 moderately long; first dorsal extending two-thirds to apex slightly 

 sinuous at tip, second and third longer, fourth shorter, arched at base 

 joining the sutural, which extends slightly beyond the middle. Pygi- 

 dium and propygidium coarsely and densely punctured. Legs as in the 

 preceding species. Length .10 inch ; 2.5 mm. 



Occurs at San Diego, California. 



S. seneipunctatus, Horn, Trans. Ann. Ent. Soc, 1870, p. 333. 



Oblong oval, black, opaque, elytra with aeneous lustre at bottom of 

 punctures. Head margined in front, with a faintly impressed chevron. 

 Thorax moderately, coarsely and densely punctured over nearly the entire 

 surface except a narrow lateral and small discal space. Elytra very 

 densely and coarsely punctured over the entire surface except at hume- 

 rus and sides, and more rarely a badly defined space on each elytron near 

 the scutellum and beneath the arch ; external subhumeral obsolete, 

 humeral obliterated by punctures, internal sublmmeral moderate ; first 

 dorsal long, indistinct, second short with an arc at base, third obsolete, 

 fourth very short, uniting by an indistinct arc at base with the sutural, 

 which extends very indistinctly two-thirds to apex. Propygidium and 

 pygidium densely ond coarsely punctured. Anterior tibiaa 5 or G-denti- 

 culate, apical three teeth very coarse ; hind tibne distinctly triseriately 

 spinulose. Length .12 inch ; 3 mm. 



The striaB of the elytra are nearly as much obliterated as in estriatus, 

 from which it may be readily known by the form of prosternum and the 

 armature of the hind tibiae. 



Occurs on the sea-coast near San Francisco, Cal. 



S. dimidiatipennis, Lee. Ann. Lye. I, p. 170 ; Bost. Journ. V., p. 



75, pi. 6, hg. 1 ; Mais. Mon., 1855, p. 713, pi. 20, fig, 149 ; palmatus, Say. 

 Journ. Acad., 1825, p. 42 ; Lee, loc. cit., p. 7(3 ; desertorum J, Mars. loc. 

 cit., p. 715, pi. 20, fig. 151 ; deserticola, Mars. Mon., 1857, p. 443. 



Form robust, black, shining, elytra usually black, sometimes obliquely 

 divided, the inner portion black, the outer red. Head strongly mar- 

 gined, front smooth, with distinct chevron. Thorax smooth, shining 

 with a narrow space of punctures along the base. Elytra sparsely punc- 

 tured at apex, punctures extending to middle along the suture, and 

 rarely beyond the third stria, lateral region sparsely punctured ; external 

 subhumeral moderately distinct, humeral line, internal subhumeral not 



