STUDIES IN THE AMERICAN BUPRESTIDiE 165 



gives no useful hints and does not even mention the names scobina 

 and americana in his sketch of the genus. 



Group VII — Type pectorosa Lee. 



There is very h'ttle to be said at present concerning this group, as 

 its single species is wholly unknown to me. The description given 

 by LeConte may be stated as follows : — 



Body blackish-icneous; prothorax more than twice as wide as long, the sides 

 strongly dilated and rounded, briefly sinuate posteriorly, unequal, 

 coarsely punctate, bicostate, the dorsal sulcus large; elytra rugose and 

 densely punctate, the striae foveately punctate, the alternate intervals 

 with somewhat elevated smooth spaces, which are rather sparse, pro- 

 nouncedly prolonged posteriorly and rounded at tip; under surface 

 dark brassy, very coarsely punctured; prosternum with two smooth, 

 strongly elevated costa?, the pectoral groove broad, deep and densely 

 punctured; metasternum almost as strongly sulcate as the prosternum, 

 sparsely punctured at the middle; first ventral broadly sulcate, sparsely 

 punctured medially, the fifth with two narrow costx, between which at 

 the tip, is a very short and smaller one; the apex is truncate in the male 

 and marked with four deep apical foveae; middle tibiae not modified 

 in the male. Length 16.0 mm. Oregon pectorosa Lee. 



Crotch gives no additional information concerning the unique male 

 type of this species but places it, in his table, under the heading: 

 " Apex of the elytra not produced, entire. " 



Group VIII — Type mutica Lee. 



To this group also belongs a single species, represented thus far by 

 a unique male specimen; it is described as follows: — 



Form rather elongate, brassy-gray in color, the prothorax one-half wider 

 than long, strongly narrowed before the middle and sinuate at the sides, 

 strongly and, laterally, confluently punctate, dorsally canaliculate; 

 elytra punctate, the internal striae distinct, the intervals variegated 

 with obscure spaces, the internal polished and sparsely punctate, pos- 

 teriorly obliquely attenuate, not at all prolonged, the tips arcuately 

 truncate; prosternum convex, sparsely punctate; metasternum and 

 first ventral sulcate; male with the fifth ventral rectangularly emargi- 

 nate, the notch with a short and broad, rectilinearly truncate tooth, 

 the intermediate tibiae straight and unmodified. Length 16.0 mm. 

 New York (Brooklyn) mutica Lee. 



This species seems to have the general facies of lurida, in form and 

 sculpture, but differs profoundly in its convex prosternum and entire 

 elytral tips. 



