1896.] NATURAL SCIENCES OF PHILADELPHIA. 305 



.segments 2-5 and fifth ventral with a fringe of black pubescence, 

 ventrals 2-4 with a white fringe ; clypeus furrowed down the middle, 

 strongly punctured laterally and basally, in the middle and ante- 

 riorly smooth ; front strongly and closely punctured, the punctures 

 of vertex large and scattered ; occiput with strong separated punc- 

 tures, but not rugose; scape with scattered punctures; pronotum 

 except posterior margin strongly and closely punctured, and with a 

 depression on each side as in auripilis, but less strong; punctures of 

 dorsulum coarse, close anteriorly, sparser at the sides, and in the 

 middle absent; scutellum and metanotum strongly punctured except 

 the apical portion which is smooth ; middle segment with the median 

 division strongly punctured laterally, stnooth medially and a little 

 produced at apex, on each side of this median division the middle 

 segment is more finely and evenly punctured, the posterior surface of 

 the median division only smooth and shining, sides of posterior sur- 

 face crenulated ; spines of the tibire and the middle tarsi black, 

 calcaria and spines of hind tarsi whitish ; wings subhyaline irides- 

 dent, faintly yellowish along the costa, costal vein black, the others 

 testaceous, apex of second submarginal cell angulate in the middle; 

 dorsal segments 1-3 with sparse, rather indistinct punctures, those 

 on the following segments closer and more distinct, especially on 

 segment 4, ventrals shining, segments 2 and 3 with two, 4 and 5 

 with .one, series of transverse punctures, sixth sparsely punctured ; 

 pygidial area coarsely longitudinally striate, not pubescent. Length 

 17 mm. 



One specimen. Corumba (April). Distinguished from conspicua 

 ■which it resembles, by the immaculate thorax, distinctly punctured 

 occiput, etc. 



Elis dorsata Fabr. 



Rio de Janeiro (November) ; Chapada (January, March and 

 April) ; Santarem (February) ; Corumba (April). Nineteen speci- 

 mens, all females. 



Elis mutanda S. &, S. 



Santarem. One 9 specimen. I refer this specimen here with 

 iesitation. It measures but 17 mm., and the wings are bluish-purple ; 

 the second and third dorsals have a small, somewhat rounded, yellow 

 spot on each side. 



Elis (Dielis) aureoMrta n. sp. 



Belongs evidently to Saussure and Sichei's " Stirps EUdis vespi- 

 Jormis" and differs from other species of that group (vespiformls, 



