1897.] NATURAL SCIENCES OF PHILADELPHIA. 265 



Chapada (April). This species is remarkable for the very trans- 

 verse head which in many respects is not dissimilar to that of Cero- 

 pales. The hind claws are missing in the only example in the col- 

 lection, which was not the case, however, when I first examined it. 

 Then the hind claws, as near as I can remember, were simple, a 

 character which would exclude the species from any of the present 

 known groups of Salius. Having nothing at present but my memory 

 to rely on, I would not care to assert that such a character existed, 

 although of the opinion that future specimens will indicate its pres- 

 ence. 



Salius { Gyphonyx) brevicornis Tasch. 



Corumba (April). One specimen. 



Salius [Gyphonyx) diversus Sm. [=Pompiius diversus Sm.). 



Chapada. One specimen. 

 Salius [Gyphonyx) pilifrons n. sp. PI. IV, f. 16. 



9 . — Black ; mandibles ferruginous in greater part ; tarsi brown- 

 ish ; front and dorsulum posteriorly with dense golden pile, face, 

 clypeus, thorax on sides and beneath and abdomen more or less, 

 with silvery pile ; clypeus short, transverse, more than four times 

 broader than long, fore margin broadly subtruncate ; eyes reach- 

 ing base of mandibles, converging somewhat to the top, where they 

 are separated by a distance not quite equal to length of first flagel- 

 lum joint ; space between hind ocelli less than that between them 

 and eyes ; first joint of flagellum nearly or quite as long as the two 

 following united ; pronotum angulate behind, its antero-lateral 

 angles swollen ; middle segment rounded, impressed down the mid- 

 dle ; legs strongly spinose, the serration of hind tibiae, however, not 

 very distinct, claws bifid, longer spur of hind tibise equal to less than 

 half the length of first hind tarsal joint; abdomen subsessile, apical 

 margins of ventral segments testaceous ; wings subhyaline, tips darker, 

 two broad fuscous fasciae cross tbe anteriors, second cubital rhom- 

 boidal smaller than third. Length 12 mm. 



Santarem. One specimen. 



Salius [Gyphonyx) opacifrons Fox. 



Three specimens of this species, which was originally described 

 from Jamaica, West Indies. Santarem. 



Salius [Gyphonyx) ichneumoniformis Sm. 



One specimen. Santarem. This is the Pompilus ichneumoniformis 

 of Smith. 



