72 MEMOIRS ON THE COLEOPTERA 



of incised transverse lines throughout, the apical tumidities more 

 widely separated than in the preceding, the tumidities with sepa- 

 rated punctures. Length (9 ) 25.0 mm.; width 14.4 mm. Prob- 

 ably Indiana ." strenua n. subsp. 



B Similar in coloration and in the well developed elytral spots but 

 with the body smaller in size, rather more depressed and very 

 much more abbreviated in all its parts, the clypeus ( 9 ^ still more 

 broadly subtruncate at apex, the prothorax shorter and broader 

 than in any other form of the genus, fully two and one-half times 

 as wide as long; elytra barely a fourth longer than wide, just 

 visibly wider than the prothorax; legs shorter, the tarsi, especially, 

 very much shorter and not so thick; pygidium densely sublinearly 

 scabrous, the apical lobe broadly rounded, the sides of the apex 

 sinuate. Length (9) 20.4 mm.; width 11.5 mm. Long Island. 



brevis n. subsp. 



4 Pronotal punctures very fine and sparse as in the preceding, the elytral 

 series seldom at all well defined and never impressed; sixth ventral 



smooth in the male. Atlantic nearctic regions 5 



Pronotal punctures relatively coarse and deep, the elytral series feebly 

 impressed; sixth ventral in the male densely sculptured throughout. 



Tropical Atlantic South America 7 



5 Body distinctly larger in size than punctata but less stout than in 

 strenua. Form oblong-oval, more oblong and less convex than in 

 punctata, evenly pale red-brown in color, shining, the elytra each with 

 a sublateral series of three black dots as usual in the American species; 

 under surface piceous to more or less rufescent, with very feeble 

 metallic gloss, the legs pale testaceous throughout; head (cf ) un- 

 usually large for this subgenus, slightly more than half as wide as the 

 prothorax, with rather prominent eyes, the trapezoidal clypeus 

 having just visibly arcuate sides, truncate and feebly reflexed apex, 

 two-thirds as wide as the base, and broadly rounded angles; it as 

 well as the head is sculptured very nearly as in punctata; prothorax 

 more transverse, more than twice as wide as long, the sides almost 

 evenly arcuate; apical angles but slightly blunt, the basal similar, the 

 ambient bead coarser, flat and dilated at the base medially, the surface 

 nearly similar, more densely though finely sculptured laterally, 

 the usual blackish sublateral spot similarly nearly smooth; elytra 

 shorter, barely at all longer than wide, very obtusely rounded at tip, 

 behind the middle distinctly wider than the prothorax, sculptured 

 nearly as in the preceding, the minute lateral sculpture dense, the 

 punctures toward the suture very fine and sparse; pygidium convex, 

 shining, with well separated anastomosing transverse scratches, 

 smooth toward apex; mesosternal process obtuse, barely as long as 

 wide before the suture. Male with the sixth ventral short, only a 

 little over half as long as the fifth, with the usual medial sinuation, 

 and exposing the pale coriaceous seventh segment; female much more 

 elongate than the male, the elytra fully a fourth longer than wide, 

 less obtusely rounded at apex, the fifth ventral barely at all modified, 

 the sixth feebly and sparsely sculptured, the tumidities well separated, 

 the concave surface between them sparsely and transversely strigilate 



