NORTH AMERICAN COLEOPTERA. 175 



Metaleptus is allied to Purpuricenus, and differs from it in the absence 

 of antennal tubercles in the male and the pubescent surface. From 

 Tragidion it differs in the absence of sulci or costae on the elytra, and by 

 the more prominent genae. 



©XOI»L.US Lee. 



O. JOCOSUS n. sp. — Beneath black, body above (except head) red, elytra with 

 the basal margin narrowly and a broad common sutural band extending three- 

 fourths to base, black, surface sparsely pubescent. Head coarsely, roughly punc- 

 tured. Thorax densely, cribrately punctured, the apical and basal margins nar- 

 rowly bordered with black. Elytra slightly narrower posteriorly, the apex obtusely 

 truncate, the sutural ans^le distinct but not prominent, surface very coarsely and 

 not closely punctured near the base, the punctures gradually finer toward the apex 

 and much denser. Body beneath (except prothorax) black, rather sparsely punc- 

 tured and with moderately long fulvous pubescence. Length .48-.60 inch; 12- 

 15 mm. 



Male. — Antennae (me and a fourth times the length of body. 



Female. — Antennae three-fourths t^e length of body. 



The only variation in color is in one specimen in which the thorax has 

 five black spots, two adjoining the apical and three the basal margin. 

 The general style of coloration resembles that of Grossidius cUscoideus, 

 except that the discal space of the elytra does not extend narrowly along 

 the suture to the base. 



Colorado and Arizona. 



Four species of this genus are now known to me from our fauna they 

 may be separated in the following manner : 



Thorax black, the tips of the tubercles red. 



Elytra very densely punctate, color black, the basal margin and the side three- 

 fourths to apex red. Body beneath at middle and entire abdomen red. Apices 



of elytra % sinuately truncate, sutural angle rounded margiiiatiis. 



Thorax red, the apical and basal margins sometimes narrowly black. 

 Abdomen red. 



Elytra black, broadly margined with red at base which extends down the side 

 three-fourths to apex ; surface densely rather finely punctate ; apices sinu- 

 ously truncate, sutural angle obtuse. Body beneath red, sides of meso- and 



metasternum browner cruentus. 



Elytra in great part red, a broad black band extending from the apex nearly 

 two-thirds to base; surface rather coarsely not densely punctured ; apices 

 truncate, the sutural angle slightly prolonged. Body beneath black, abdo- 

 men red coralliuii»i. 



Abdomen and entire body beneath black. 



Elytra colored as in corallinu.^ with a very narrow basal black band ; surface 

 coarsely punctured at base more finely and closely toward apex; apices 

 separately rounded, the sutural angle distinct but not prolonged. 



