NOKTII AMERICAN COLKOl'TKRA. O 



usually more distinctly tridenticulate. Elytra less distinctly costate 

 and often with the costse obsolete, except the subhunieral. 



In the wide range of country over which this species extends every 

 grade of vaiiation in the distinctness of the costal occurs. There 

 need be no trouble in separating the males of this species. The 

 females resemble those of the preceding, and may be known by the 

 characters there given. 



Occurs in Newfoundland, New Hampshire, Massachusetts, New- 

 York, Michigan, Nebraska, Ohio, Maryland, Virginia and the inter- 

 mediate localities. 



K. albida Lee. 



J/rt/e.— Variable in coloration. Thorax subacutely augulate at 

 the sides without denticulation. Elytra witii the second and fourth 

 costaj usually distinct, often only the fourtli evident, color yellowish 

 testaceous with the suture nearly always narrowly piceous. Posterior 

 tibine simple, with terminal spurs. 



Var. — Head rufescent, occiput piceous. Thorax nearly black, 

 with the apical and basal margins pale. 



Var. — Head and thorax rufescent, the latter paler at apex and base. 



Var. — Head and thorax as pale as the elytra. 



Y(jy_ — When the suture is piceous the scutellum is similar in color, 

 when pale the scutellum is pale. 



Female. — Yellowish white, practically invariable in color. Thorax 

 less acutely angulate. Elytra in the great majority very feebly 

 costate, the subhuraeral alone evident. 



This species is readily known by its generally smaller size and 

 paler color, but more especially by the form of the antennte, in which 

 the last four joints, although etpial in length among themselves, are 

 very obviously shorter than the four joints which precede. 



Occurs in Oregon, Washington, and California as far south as 

 Alameda. 



Bibliography and Synonymy. 



S. carinata Mann., Bull. Mosc. 1843, ii, p. 307: Lac. Moii. p. 228. 



S. simplex Lee. Pacif. K. R. Rep. 1857. p. fi6. 



S. ferruginea Germ. {Vouacia), Nov. Act. Halens. i. (>, p. :U : litic, Mon. p. 23-.'. 



triphi Say. .Tourn. Acad, v, p. 281: edit. Lee. ii. p. 337. 



costata Newni., Ent. Ma jr. v, p. 391. 



rubicunda Lac, Mon. p. 230. 

 S. albida Lee, Pacif. R. R. Rep. 18.57, p. (>(), 9 . 



sutnrnlis I^ec, loc. cit. % . 



sertata Lee , Proc. Acad. 1859. p. 90. % . 



TRANS. AM. ENT. SOC. XIX. .lAXUAKV, 1892. 



