1899.] NATURAL SCIENCES OF PHILADELPHIA. 197 



segments gives them a striated appearance; dorsals 3-5, very 

 sparsely punctured ; second ventral distinctly impressed trans- 

 versely near base ; ventral segments sparsely and last dorsal densely, 

 with black hairs. Length, 22 mm. 



One specimen. Allied to S. brevicornis Tasch. 



Salius (Priocnemis) carinatus Lep. 



?. — Bluish; flagellum, mandibles and labrum ])lack; middle 

 segment purplish; wings black, with bluish and purplish reflec- 

 tions, the nervures ferruginous ; clypeus incurved medially; first 

 joint of flagellum about as long as second and two-thirds of third 

 joints ; eyes slightly converging above, the space between them at 

 top slightly exceeding length of first flagellar joint; pronotum 

 strongly swollen on each side; middle segment coar.sely striated, 

 medially impressed above, and with a large tubercle just behind 

 each stigma; second ventral segment with two transverse, widely 

 separated tubercles which are connected by a smooth fold in the 

 form of an arch; between these tubercles the segment is depressed; 

 abdomen beneath and apically with long black hairs. Length, 

 25-26 mm. 



iji. — First joint of flagellum a little longer than second; middle 

 segment above bearing three longitudinal, deep furrows, the two 

 outer diverging somewhat; abdomen beneath with large, spai'se 

 punctures, the tubercles obtuse, or absent, the second ventral bear- 

 ing a strongly sinuous fold; subgenital plate elongate, obtusely 

 truncate, punctate, and indistinctly impressed down the middle. 

 Length, 22 mm. 



Numerous specimens. Resembles bituberculatus Guerin, but the 

 color is a lighter blue and the flagellum is entirely black. The 

 subgenital plate in bitubercidatm is a broad, apically rounded area, 

 raised medially. 



Salius (Priocnemis) apicipennis n. sp. 



cJ*. — Bluish, changing to black in certain lights; middle segment, 

 mandibles aud first two joints of flagellum black; flagellum joints 

 3 and following fulvous, the two apical joints fuscous; wings black, 

 with purplish reflection, apex of anteriors whitish; veins black; 

 clypeus incurved; scutellum high; middle segment coarsely striated, 

 with two approximate, parallel, raised lines on carina extending 

 down middle of upper surface to posterior face where they suddenly 



