Horn. J LlO [Feb. 21, 



finely striate, striae externally deeper, punctured, intervals sparsely 

 punctulate, surface very minutely alutaccous ; apex bispinous, the outer 

 spine longer. Pectus black, abdomen pale rufo-testaceous or black. 

 Legs entirely testaceous. Length .28 inch ; 7 mm. 



Male. Tarsi as in punctatissimus. Fourth and fifth segments of abdo- 

 men also similar. Abdomen black or piceous margined with testaceous. 



Female. Abdomen rufo-testaceous. 



The form of this species is similar to the preceding, the surface 

 smoother, more shining. Its color is pale testaceous with irregular spots. 



Occurs in Texas and Arizona, Lower California. 



B. pugnax, Lee. New Species, 1863, p. 24. 



Head with aeneous surface, coarsely but not densely punctured. 

 Thorax coarsely punctured, with median divided aeneous vitta. Elytra 

 rather deeply striate, stria? coarsely punctured, intervals punctured, 

 nearly as densely as in punctatissimus. Body beneath piceous, legs pale 

 testaceous. Fifth segment of abdomen emarginato-truncate at middle, 

 the side teeth of the emargination short and widely distant. Elytra bi- 

 spinous at apex, the outer spine long and slender. Length .20 inch ; 

 5 mm. 



The two sexes have no special distinction beneath, the abdomen being 

 entirely simple. 



Occurs in Illinois and Missouri. 



B. eniarginatus, n. sp. 



Pale yellowish testaceous, moderately shining. Head black with 

 bronzed surface, sparsely punctured. Thorax twice as wide as long, 

 sparsely punctured with median fuscous stripe from apex to base. Ely- 

 tra yellowish testaceous, maculate as in striatum, striate, striae nearly 

 equal, punctured, intervals sparsely punctured with punctures nearly as 

 coarse as those of the striae ; apex of each elytron emarginate. Body 

 beneath piceous. Legs testaceous. Length .20 inch ; 5 mm. 



The fifth segment of the abdomen is emarginate as usual and with two 

 teeth at the bottom of the emargination. The male has the anterior tarsi 

 dilated and the abdominal segments not carinate. This species resembles 

 a small B. miles, but may be known by the simply emarginate elytra and the 

 abdomen not carinate in the male. 



One specimen, Texas. 



B. macnlosus, Mann. Bull. Mosc. 1853, III, p. 1G7 ; tesselatus, Motsch. 

 Bull. Mosc. 1859, III, p. 180. 



This species from Alaska remains unknown. From the description it 

 closely resembles jiunctatissimus, but is smoother, and less punctured. 



The species of the sub-genus Bebosus are more numerous and may be 

 arranged in the following manner : 



Fifth segment of abdomen with broad short lobe at mid- 

 dle of emargination. 

 Mesosternal crest with a long acute spur slyliferus. 



