302 Natural History Bulletin. 



size, inside more convex than outside; eighth, narrower, as 

 wide as long; ninth and tenth, larger, truncate, obconical; 

 the last as long as the three preceding together, more than 

 twice as long as its width, Prothorax wider than long, con- 

 vex punctured along the base, lateral fovefe small, median 

 oblong. Elytra across the shoulders a little wider than the 

 prothorax, twice as wide near the posterior limits, disk convex, 

 sparsel}' punctured, discal lines line, arcuate, sutural ones par- 

 allel. Abdomen broadly convex, basal segment with the carinae 

 very short, more than one-third of the segmental width apart. 

 Legs, the posterior tibiae sHghtly arcuate. ? antenna; shorter, 

 regular. Plate IX., Fig. 72, antennae, 5 and 9. 



California (Sonoma Co). Spokane Falls, Washington. 

 Idaho. 



B. FRANCiscANA, Cusej. Slender, black, elytra red; legs 

 and antennae dark brown, polished; pubescence, dense, short. 

 Length, 1.3 mm. 



Head feebly convex, punctuate, gena; shorter than the eye, 

 foveas small, frontal fove« wanting, frontal declivity bearing 

 an oval spot with setiform, short hair. Anteiiiuv stout, hardly 

 as long as the head and prothorax together, the basal joint 

 short, as thick as the tenth, the second rounded, half as thick, 

 the third narrower, obconical, longer than wide, the fourth like 

 the second, the fifth wider than the fourth and twdce as long, 

 the sixth and seventh smaller, as long as wide, eighth very 

 small, transverse, ninth and tenth rapidly increasing in width, 

 trapezious, the last one-half wider than the tenth, as long 

 as the three preceding ones together, truncate at the base, 

 pointed. Prothorax very little wider than the head, wider 

 than long, transversely convex, densely punctate, lateral 

 foveae large, median very small. Elytra slightly wider than 

 the prothorax across the shoulders, across the posterior third 

 not quite twice as wide and a little wider than long; sutural 

 lines deep, discal sharp, arcuate. Abdomen broadly convex, 

 basal carinae fine, divergent including one-fourth of the seg- 

 mental width. Legs short, stout, intermediate, tibia; with a 

 terminal spur. 



