264 PROCEEDINGS OF THE ACADEMY OF [1897. 



4. Wings bifasciate with yellow, tips pale ; face strongly depressed 



behind each, antenna?; fore femora greatly swollen, their 

 greatest width equal to more than one-third their length ; all 



abdominal spots yellow, . Herbertii. 



Wings bifasciate with subhyaline, tips pale ; face not strongly 

 depressed behind antennas; fore femora not greatly swollen, 

 the greatest width less than one-third their length; spots on 

 segments 2 and 3 pale, on segment 6, fnlvous, . . . venustus. 



5. Second recurrent vein received by the cubital vein far beyond 



apex of second submarginal cell ; body almost without cinere- 

 ous pile, pertaining to purplish ; a patch of silvery pile at sides 



of apex of middle segment, diverticulus. 



Second recurrent vein interstitial with second transverso-cubital 

 vein; body with distinct cinereous pile, canescens. 



Salius (Group ?) transversus n. sp. 



9 . — Blue ; flagellum, tip of abdomen and tarsi black ; head trans- 

 verse, broader than long ; clypeus subconvex, closely punctured, fore 

 margin somewhat reflexed, subtruncate ; front closely and distinctly 

 punctured, strongly depressed before the anterior ocellus; occiput 

 indistinctly punctured ; eyes broadly subovate, almost reaching base 

 of mandibles, diverging toward top, where they are separated by a 

 distance nearly equal to the combined length of antennal joints 3-5 ; 

 space between hind ocelli about equal to half that between them and 

 eyes ; antenna? robust, the flagellum slightly thickened medially ; 

 pronotum short, sharply angulate behind ; scutellum and postscutel- 

 lum raised in the middle longitudinally; middle segment subtrun. 

 cate, not impressed above, the posterior surface rather coarsely 

 striato-punctate ; legs tolerably spinose, hind tibia? strongly serrated 

 externally, no tarsal comb, fore and medial claws bifid, hind claws 

 missing ; abdomen depressed, finely and distinctly punctured, particu- 

 larly beneath, second ventral with distinct, transverse impression, 

 anterior to which the segment is black and opaque, ventral segments 

 with long sparse, black hairs, which are also present on the apical 

 dorsals, the apical segment particularly hirsute ; wings dark fuscous 

 with brilliant blue reflection, marginal cell elongate and acuminate, 

 submargiuals large, the second oblong, narrow, smaller than third 

 which is narrowed about one-quarter to marginal, basal vein received 

 before apex of submedian cell, cubital vein of hind wings received 

 far before apex of submedian cell. Length 19 mm. 



