1897.] NATURAL SCIENCES OF PHILADELPHIA. 261 



Wings with a fuscous cloud in vicinity of marginal and submar- 



ginal cells, 24. 



24. Flagellum serrated beneath ; legs except calcaria black, . . . 



serratus. 



Flagellum even beneath ; front and face with golden pubes- 

 cence ; legs including coxse castaneous ; first three segments 

 broadly yellowish at base, resplendens. 



Planiceps perpictus n. sp. 



9. — Black; flagellum beneath fulvous; calcaria whitish; spot 

 on each side of dorsal segments 2-4, and an elongate one on sixth, 

 yellowish ; meso- and metapleurse and part of middle segment with 

 dense silvery pubescence, tbat on coxpe, face and clypeus less dense; 

 dorsulum at apex and scutellum with dense golden, pubescence ; 

 clypeus small sparsely punctured, anterior margin truncate; front 

 and face smooth and shining along eyes, the front above and vertex 

 striato-punctate, opaque ; space between eyes above greater than 

 combined length of antennal joints 2-4; space between hind ocelli 

 somewhat less than that between them and eyes ; first joint of flagel- 

 lum about one-fifth, or less, longer than second ; pronotum as long 

 as dorsulum and scutellum united, its hind margin slightly arcuated ; 

 middle segment subtruncate behind, its upper surface divided by a 

 longitudinal furrow ; legs spinose but not very strongly, claws bifid ; 

 abdomen compressed, longer than head and thorax ; wings with 

 superiors dark fuscous, with the median cell (except base and apex), 

 and a fascia crossing through apex of first submarginal, and discoidal 

 and base of third discoidal cells, white, extreme tips and inferiors 

 subhyaline, the latter stained with pale fuscous. Length 17-21 mm. 



Chapada, (March, April, October). The species assigned to vari- 

 pennis Perty by Spinola is evidently not that species. Perpictus 

 and varipennis Spin., (non Perty) are apparently closely related, 

 but I think distinct, although they may yet be proved to be but 

 varieties, varipennis Spinola, having but five abdominal spots, 

 whereas variegatus has seven. 



Planiceps Herbertii n. sp. 



$ . — Black somewhat bluish ; a spot at each side of dorsal seg- 

 ments 2 and 3, and the sixth almost entirely yellow ; calcaria pale ; 

 fore tarsi testaceous ; flagellum especially beneath and palpi brown- 

 ish ; apical margin of clypeus and mandibles medially, ferruginous; 

 front with brownish pile ; clypeus, thorax on sides and beneath with 

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