RUTELIN.E 105 



*Bolax vittatus n. sp. Body unusually large, oblong, moderately 

 convex, shining, glabrous, pale flavo-testaceous, the head and pronotum 

 black, the latter with pale sides dilated at apex and behind the middle, 

 the head gradually rufo-piceous anteriorly; elytra pale, the broader flat 

 intervals black, the second stripe more or less finely disintegrated and the 

 lateral of the four narrow and partially pallid; head large, four-sevenths 

 as wide as the prothorax, the punctures coarse, slightly separated, gradu- 

 ally fine toward base, the clypeus large, semicircular, with still coarser 

 and more confluent punctures, the margins all distinctly reflexed, the 

 suture fine, transverse, distinct, still finer at the sides; eyes large, promi- 

 nent; prothorax short, very transverse, two and one-half times as wide 

 as the median length, the sides broadly rounded, more converging and 

 less arcuate from well behind the middle to the very prominent and sharp 

 apical angles, widest near basal third, the moderately obtuse basal angles 

 rounded; base with a rather fine bead broadly interrupted at the middle; 

 apical sinus very deep, transverse at the bottom; surface with a longi- 

 tudinally crescentiform impression very near each side, the punctures 

 fine and sparse, becoming still finer and sparser laterally; scutellum 

 ogival, rather strongly, evenly and loosely punctate; elytra slightly 

 inflated and with arcuate sides behind basal fourth, not quite a third 

 longer than wide, behind the middle as wide as the prothorax but at base 

 distinctly narrower, three times as long, rounded in apical third, the wide 

 flat dark intervals confusedly and rather strongly punctate, separated 

 by narrower, convex and minutely, very sparsely punctulate pale inter- 

 vals; pygidium glabrous, transversely, densely rugose, becoming smooth 

 and sparsely punctate medially; legs slender, the hind tibiae not surate, 

 the larger claw of all the tarsi arcuate, deeply incised at apex, the posterior 

 longer and with relatively less deep incisure; all the tarsi with spiniform 

 hairs beneath. Length (9) 20.8 mm.; width 10.3 mm. Isthmus of 

 Panama (Culebra), Gaillard. 



Differs from magnus Bates, in having the prothorax widest 

 behind, and not before, the middle, in the finer thoracic punctures 

 and rather differently punctured elytra; the larger punctures of the 

 flat intervals are mingled with very minute sparse punctulation, 

 like that pervading the narrower convex intervals. 



*Leucothyreus cephalotes n. sp. Body small, convex, rather slender, 

 parallel, polished, black and glabrous, with feeble metallic lustre above, 

 black and rather shining, with fine decumbent separated hairs beneath, 

 nearly wanting broadly toward the middle, and short slender testaceous 

 legs; head five-sixths as wide as the prothorax, evenly convex, finely, 

 sparsely punctate, the clypeus short, between two and three times as 

 wide as long, circularly rounded, gradually moderately reflexed anter- 

 iorly, the punctures coarse and rugose apically, thence gradually smaller 

 and sparse basally, the suture very fine and obsolete, barely traceable; 

 eyes very moderate but convex and prominent; prothorax short, rather 

 more than twice as wide as long, widest at the middle, the sides evenly 

 and slightly arcuate, the basal angles more than right but very sharp, 



