Horn.i di-J [June 20, 



humeral finely impressed, joining the intei'nal subhumeral ; first dorsal 

 well defined, extending four-fifths to apex and sinuate at tip ; second ex- 

 tending to middle, and finely impressed, third and fourth very finely 

 impressed and rapidly shorter, the fourth arching at base, joining the 

 sutural which extends two-thirds to apex, and is gradually obliterated by 

 the punctures. Pygidium aud propygidium moderately, and not densely 

 punctured. Legs as in the preceding species. Length .08-. 10 inch ; 

 2-2.5 mm. 

 Occurs on the sea-coast, of California. 



S. Pitchii, Mars. Mon., 1862, p, 494, pi. 13, fig. 50, 



Surface distinctly bronzed. Head mai-gined, front punctato-rugose. 

 Thorax with a broad space at sides and apex coarsely punctured, at mar- 

 gin strigose, discal smooth space moderately well defined, basal margin 

 coarsely punctured. Elytra densely and coarsely punctured, and opaque 

 over the entire dorsal aspect, except a well defined scutellar mirror ; ex- 

 ternal subhumeral obsolete, humeral -fine, not joining the internal sub- 

 humeral which is moderately long ; first dorsal nearly entire, well 

 marked sinuous at tip, second short, indistinct, third obsolete, fourth 

 very short arcuate at base, sutural entirely wanting. Propygidium and 

 pygidium moderately but not very densely punctured. Legs as in the 

 preceding species. Length .12 inch ; 3 mm. 



One of the best defined species of the group. One specimen from 

 Lowell, Massachusetts, kindly presented by Mr. P. S. Sprague. 



S, estriatus, Lee. Pacif. E. R. Rep., 1857, App. I., p. 36 ; Horn, 

 Trans. Am. Ent. Soc, 1870, p. 139, pi. 1. fig. 12. 



Black, subopaque. Head distinctly nrargiued, front with one or two 

 chevrons more or less obliterated. Thorax moderately densely punc- 

 tured, and at the sides substrigose, disc with spaces of irregular form 

 impunctured. Elytra densely and moderately coarsely punctured over 

 the entire dorsal aspect excepting three small smooth sj)aces, the first 

 humeral, and extending along the sides, the second small oval and 

 slightly within and beneath the first, the third larger than the preceding 

 and at one-third from the base ; external subhumeral not distinct from 

 the marginal, humeral obsolete, internal subhumeral moderately im- 

 pressed, first dorsal obsolete at base, apical portion nearly entire, sinuate 

 at tip ; second, third and fourth striie entirely wanting, sutural entirely 

 obliterated at base, apical portion sometimes evident. Pygidium and 

 progygidium moderately densely and finely punctured, the former with 

 a median narrow space and apex much smoother. Legs as in fraternus. 

 Length .12-.18 inch ; 3-4.5 mm. 



Oi'cgon and California, not common. 



Group IX. 



Front distinctly margined. Prosternum compresso-carinate, stria? 

 united in front, usually short, sometimes obsolete. Hind tibia? with 



