1897.] NATURAL SCIENCES OF PHILADELPHIA. 253 



whitish-yellow ; head and thorax with silvery-sericeous pile, most 

 conspicuous on face, clypeus, thorax on sides and heneath and coxa? ; 

 clypeus rather small, its fore margin broadly truncate ; front with a 

 medial impressed line ; eyes large, reaching base of mandibles, inner 

 orbits almost parallel, separated above by a distance greater than 

 the combined length of pedicellum and first flagellum joint; ocelli 

 large, the space between hind pair about equal to that between 

 them and eyes; antenna? long, much longer than head and thorax 

 united, the first joint of flagellum a little longer than second; hind 

 margin of pronotum subangulate ; dorsulum convex ; scutellum un- 

 usually high and prominent, finely and transversely striated on the 

 sides; middle segment much below level of rest of thorax, convex* 

 rounded behind, finely coriaceous and divided by a strong longitu- 

 dinal impressed line, reaching about two-thirds its length ; legs 

 graceful, not strongly spinose, claws bifid, calcaria long, the longer 

 of the hind pair not equalliug two-thirds the length of first hind 

 tarsal joint ; abdomen subpetiolate, clavate compressed, first segment 

 longer than second ; wings subhyaline, the superiors crossed by two 

 fuscous bands, the outer of which is the broader, nervures dark 

 testaceous, second submarginal rhomboidal, not as large as third, 

 which is narrowed about one-third to the marginal. Length 15 mm. 

 Santarem. One specimen. 



Pompilus gracillimus Sin. 



Chapada (May). One specimen. 



Pompilus resplendens n. sp. 



$ . — Front, cheeks, greater part of upper and lateral portions of 

 thorax and abdomen black or blackish with a tinge of brown ; 

 antennae, clypeus, mandibles, palpi, prothorax, legs including coxa?, 

 and teguke, pale castaneous; hind margin of pronotum, spot at apex 

 of middle segment, one on the anterior coxa?, calcaria of medial and 

 hind legs, and base of dorsal abdominal segments 1-3, yellowish ; 

 entire insect, especially the front, clypeus and sides of thorax with 

 golden pubescence ; clypeus small, broadly subtruncate anteriorly; 

 front; subopaque, with impressed line distinct; eyes large, reaching 

 base of mandibles, the inner orbits, if anything slightly diverging 

 above, at which point they are separated by a distance about equal 

 to the combined length of flagellum joints 1 and 2 ; space between 

 hind ocelli slightly greater than that between them and eyes; an- 

 tenna? longer than head and thorax united, the first and second 



