1897.] NATURAL SCIENCES OF PHILADELPHIA. 269 



Salius (Priocnemis) serrulus n. sp. 



9. — Black; antennae testaceous, legs darker : mesopleurae densely 

 silvery, remainder of insect with cinereous pile ; clypeus anteriorly 

 and most of mandibles, ferruginous ; clypeus strongly depressed 

 transversely, before anterior margin, front scarcely impressed , eyes 

 reaching base of mandibles, almost parallel within, space between 

 them at top about equal to length of antennal joints 2 and 3 ; space 

 between hind ocelli distinctly less than that between them and eyes ; 

 first joint of flagellum about one-fifth or more longer than second ; 

 pronotum not distinctly angulate ; middle segment rounded behind, 

 slightly impressed down middle, the posterior face more strongly so ; 

 legs not strongly spinose, but the hind tibiee with a remarkably 

 strong serration when the smallness of the insect is considered ; 

 longer spur of hind tibia? fully equal to half the length of first hind 

 tarsal joint ; abdomen subcompressed apically, shortly subpetiolate ; 

 wings subhyaline, iridescent, the superiors with the base, tips and 

 two cross fasciae, fuscous, second and third submarginal cells of almost 

 equal size, each receiving the first and second recurrent veins respec- 

 tively between their base and middle. Length 5 mm. 

 Corumba (March). One specimen. 



Salius (Priocnemis) setaceieornis n. sp. 



9 . — Black, with a steel-blue reflection and rather densely clothed 

 with cinereous pubescence ; clypeus broadly subtruncate, or slightly 

 rounded-out, not much more than twice as broad as long; front not 

 impressed; eyes almost reaching base of mandibles, if anything 

 slightly diverging above, where they are separated by a distance 

 fully equal to the length of antennal joints 1 and 2 ; space between 

 hind ocelli less than that between them and eyes; antennae long, 

 setaceous ; pronotum angulate behind ; middle segment rounded 

 behind, with a slight depression above at base ; legs not strongly 

 spinose, the serration of hind tibiae not distinct, longer spur of the 

 latter equal to somewhat more than half the length of first hind 

 tarsal joint; abdomen shortly subpetiolate; wings subhyaline, the 

 tips and a cross fascia in the vicinity of the second submarginal cell, 

 fuscous, second submarginal smaller than third, narrowed one-quar- 

 ter above and receiving the first recurrent vein in the middle, third 

 submarginal narrowed nearly one-half above, receiving the second 

 recurrent vein before the middle. Length 9-10 mm. 



Chapada (April) ; Santarem. Three specimens. 



