242 PROCEEDINGS OF THE NATIONAL MUSEUM. 



portion of the genae; antennae luteo-testaceous, gradually darkening 

 from base to apex, nearly two-thirds (male) or three-fifths (female) as 

 long as the hind femora. Pronotum subequal, faintly expanding pos- 

 teriorly, the disk ferrugineo-fuscous, sometimes testaceous flecked with 

 fuscous, gently convex transversely and passing by an abrupt but 

 rounded shoulder, scarcely forming lateral carinae, into the slightly 

 tumid sub vertical lateral lobes ; these are flavo- testaceous on the lower, 

 piceous on the upper half, the division line between the colors sharp, 

 arcuate; median carina sharp and distinct on metazona, feeble on 

 prozona, and sometimes obsolete between the sulci; front margin trun- 

 cate, hind margin feebly produced, subtruncate; prozona distantly, 

 coarsely, and shallowly punctate, feebly convex anteroposteriorly, 

 longitudinal, nearly one-half (male) or about one-third (female) longer 

 than the closely and rather finely punctate metazoua. Prosternal 

 spine small, stout, conical, and rather sharply pointed (male) or blunt 

 (female); interspace between mesosternal lobes fully half as long again 

 as broad (male) or fully half as broad again as long but narrower than 

 the lobes (female); ridge of metathoracic episterna flavous like the 

 meso thoracic, piceous between. Tegmina abbreviate, shorter than the 

 pronotum, in the female scarcely longer than the prozoua, very broadly 

 ovate, very broadly rounded apically, attingent or subattingent, brown- 

 ish fuscous, the anal area often cinereous. Fore and middle femora 

 very tumid in the male; hind femora rather stout and plump, ferrugineo- 

 testaceous, sometimes immaculate, sometimes obscurely and brokenly 

 trifasciate with blackish fuscous above, sometimes the whole outer face 

 completely infuscated (the carinae sometimes flavescent). the inferior 

 surface flavous or pale sanguineous, the geniculation feebly infuscated; 

 hind tibiae very dark glaucous or bronze green, sometimes with a nar- 

 row fuscous patellar anuulus, the spines long, pallid on basal, blackish 

 on apical half, ten to eleven, rarely nine or twelve, in the outer series. 

 Abdomen flavous, testaceous or ferruginous, the sides marked with 

 piceous, in the male sharply delimited in a narrowing band; extremity 

 in the male clavate, considerably recurved, the supraanal plate triangu- 

 lar, expanded at extreme base, the apex acutangulate, the lateral mar- 

 gins broadly elevated, the median sulcus very broad at base, rapidly 

 narrowing so that at and beyond the middle it is very slender, the 

 arcuate bounding ridges high and sharp ; furcula reduced to the slightly 

 projecting inner angles of the divided halves of the last dorsal segment; 

 cerci strongly compressed, very broad and rounded on basal half, with 

 marginal borders, and a little tumid in the middle, the apical half sub 

 cylindrical, slender, tapering, pointed, not one-third the width of the 

 base, the whole not more than half as long again as broad and hardly 

 attaining the tip of the supraanal plate; subgenital plate much longer 

 than broad, with very convex lateral margins, deeply hollowed and 

 entire apical margin, the margins quadrate as seen from above. 



Length of body, male, 18 mm., female, 19 mm.; antennae, male, C.5 



