386 CASEY 



three of these grooves are generally a little stronger, but this is 

 the only modification that I have noted, except a very minute 

 truncature of the apical angles in a few species such as god- 

 mani Champ., and the sexes differ but little, as a rule, the 

 female merely being a little stouter in form, with the anterior 

 parts usually more closely punctured. In the following table I 

 have included a few neotropical species which happen to be 

 represented in my cabinet : — 



Upper line of the epipleuriE attaining the acute sutural angles ; ante- 

 rior angles of the prothorax prominent and acute, elytra with con- 

 fused sculpture at least laterally ; eyes finely faceted. \^Lobotneto- 

 pon in sp.] 2 



Upper line of the epipleurjE not attaining the sutural angles, the elytral 

 apex conjointly narrowly truncate or feebly sinuate ; anterior angles 

 of the prothorax anteriorly prominent but blunt ; elytra with con- 

 fused sculpture ; eyes finely faceted. \_JSpitragoma n. subg. ] . . . . 1 5 



Upper line of the epipleurjE not quite attaining the sutural angles but 

 terminating in a minute denticle near it, the apices individually 

 minutely, obliquely truncate ; elytra with even series of punctures 

 which are not at all confused laterally ; anterior thoracic angles 

 acute but not very prominent ; lateral lobes of the front more 

 prominent, the eyes coarsely faceted. \_Efitragopsis n. subg. ] ... 16 



2 — Body glabrous or with inconspicuous vestiture 3 



Body wath distinct pubescence 14 



3 — Head without occipital depressions 4 



Head with a marked impression at each side of the occiput near the 



eyes, at least in the female 13 



4 — Pronotal punctures more or less fine and sparse medially 5 



Pronotal punctures decidedly coarse throughout lo 



5 — Anterior angles of the prothorax not much deflexed 6 



Anterior angles greatly deflexed, almost as in oval is 9 



6 — Pronotum without an impunctate median line or with this line 



narrow and very imperfect 7 



Pronotum with a distinct impunctate median line S 



7 — Form narrowly fusoid, moderately convex, highly polished with 



strong iuneous lustre, the pubescence verv short and sparse, incon- 

 spicuous though easily observed; head rather coarsely, sparsely 

 punctate, more closely toward the eyes and anteriorlv ; protliorax 

 only about a third wider than long, moderatclv narrowed from the 

 acute and prominent basal angles to the acute and strongly ante- 

 riorly prominent apical angles, the sides very feebly arcuate, 

 generally becoming slightly sinuate near both angles, the surface 

 very minutely and sparsely punctate, becoming somewhat coarsely 

 but still sparselv so laterally, with a feeble elongate-oval impres- 



