AMERICAN COMPONENTS OF THE TENTYRIIN^ 379 



Prosternum rapidly deflexed behind the coxre, conforming with the 

 prevailing type of structure in the subfamily, the mesosternum 

 normal or but feebly impressed I3 



4 — Tarsi with dense pads of fine pale pubescence beneath 5 



Tarsi with sparser short, stiff, spiniform setag beneath, the posterior, 

 at least, devoid of denser and finer pubescence 10 



5 — Pronotum not modified sexually' 6 



Pronotum remarkably modified in the female; body stout, very ob- 

 tusely rounded behind 9 



6 — Head with strong supra-orbital ridges 7 



Head with very feeble or obsolete supra-orbital carinae 8 



7 — Body very elongate and acutely pointed behind ; lateral lobes of 



head obliquely prominent ; prothorax subtruncate at tip, with the 

 angles obtuse and rounded; basal joint of the hind tarsi fully as 

 long as the fourth. [Type Epitragus submetallicus Lee.]. 



Polemiotus "" " ' 



Body very stout, extremely convex longitudinally above, obtuse behind, 

 the lateral lobes of the head not obliquely prominent, the pro- 

 thorax sinuate at tip, with acute and anteriorly prominent angles ; 

 basal joint of the hind tarsi evidently shorter than the fourth. 

 [Type C. caz'/ca«t/a n. sp.] * Cyrtomius J^ ^ 



8 — Body more or less narrow, elongate-oval, acutely pointed behind 



and moderately convex axially above, the frontal lobes not ob- 

 liquely prominent except sometimes in the subgenus Epitragopsis^ 

 the prothorax narrowed and sinuate anteriorly, with the angles 

 more or less acute and anteriorly prominent ; basal joint of the 

 hind tarsi shorter than the fourth. [Type Epitragus fiisiforjuis 

 Csy . ] Lobometopon -^ s <f 



9 — Supra-orbital carinte more or less fine, sometimes nearly obsolete 



as in the preceding genus ; prothorax narrowed anteriorly, sinuate 

 and with acute and anteriorly prominent angles; basal joint of 

 the hind tarsi evidently longer than the fourth. [Type Epitragus 

 caTzalictclatus ^a.y'] Bothrotes '^ 



10 — Supra-orbital ridges strong, the eyes rather coarsely faceted; 

 body nearly as in Lobometopon, but with the basal joint of the 

 hind tarsi at least equal in length to the fourth and generally 

 decidedly longer; sculpture usually coarse and sparse, the surface 

 polished. [Type Epitragus prui?toszis Horn] Metopoloba "^ 



Supra-orbital carina) apparently wholly obsolete; eyes very minutely 

 faceted ; body shorter, stout, broadly oval ; basal joint of the hind 

 tarsi evidently shorter than the fourth. [Type P. subvittatus 

 n. sp.] Pechalius ^ -v^ 



' See note under Lobometopon. 



