1902.] NATURAL SCIENCES OF PHILADELPHIA, 55 



beneath, a medially interrupted line on pronotum anteriorly, line 

 on fore margin of postscutellum, spot on four anterior femora at 

 apex, line on all tibise, and at apex of segments 1-5 rather broadly, 

 yellow; flagellum beneath, hind margin of pi-onotum narrowly, 

 and tegulse (except a yellow basal spot), reddish - testaceous ; tarsi 

 dark. Head deeply but rather closely punctured, the hind ocelli 

 margined by a tubercle internally and behind them a depressed 

 smooth area; front not strongly convex, not impressed; cl}q)eus 

 elongate pyriform,. with large, sparse, shallow punctures, with a 

 carina on each side toward apex, which projects in the form of teeth, 

 one at each side of the fore margin ; thorax punctured very simi- 

 larly to front, but on the mesopleui'se the punctures are much sparser 

 and not so deep ; fore margin of pronotum sharply crested except 

 medially ; scutellum impressed down middle ; middle segment with 

 a distinct dorsal surface medially, rugoso-punctate above, on sides 

 with large, sparse, punctures, the concave area with large, shallow 

 pimctures, bordered by a rough but not strongly indicated ridge, 

 at the sides subangular; carina of first abdominal segment well- 

 developed, sharply angular above, the dorsal surface of the segment 

 not more than half as long as it is broad on apical margin, its 

 punctures strong and separated but not as coarse as on front ; the 

 second segment with the punctures shallower, sparse at base, the 

 apical margin slightly reflexed, ventral surface with stronger punc- 

 tures, at base transversely depressed, the medial surface rather flat ; 

 wings subhyaline, clouded in costal and marginal cells, nervures 

 black. Length 9 mm. 



d^. — Colored like ?, but with clypeus entirely yellow, the yellow 

 of eye-emargination forming a line bordering the orbit, that on pro- 

 notum and legs more extended; punctuation coarser; clypeus 

 shorter, though rather similarly shaped as in the female, with shal- 

 low punctures throughout; flagellum with joints 1-8 pale fulvous 

 but the apices with a narrow black line, rather robust and clavate 

 as far as the eighth joint, terminal joint long, equaling the two 

 preceding ones united in length, somewhat curved ; the total length 

 of the antennae is barely as long as head and thorax ; legs not 

 unusual except that the hind coxse are strongly dentate above 

 near base ; second segment scarcely reflexed. Length 8 mm. 



Chapada (September); Corumba (February). Two 9 aud one 

 d^ specimens. 



