1897.] NATURAL SCIENCES OF PHILADELPHIA. 277 



merits testaceous, the apical ones with long browa hairs; wings 

 yellow, narrowly subfuscous at apex. Length 18-22 nam. 

 Chapada (December). Two specimens. 



Synoptic Table of the New Species of Salius described in the pre- 

 ceding pages. 



1. Tarsal claws cleft, 2. 



Tarsal claws dentate, 4. 



2. Head very transverse, flat; antenna? short and thick; entirely 



blue, including wings, transversus. 



Head not very transverse, of the usual form ; antennae long and 

 usually slender, 3. 



3. Front clothed with a dense golden pile ; second submarginal 



cell rhomboidal, scarcely narrowed above; . . . . pilifrons. 

 Front subopaque without pile; second submarginal cell some- 

 what triangular, narrowed nearly two-thirds above, 

 opacifrons. 



4. Second ventral segment bituberculate or carinate, 21. 



Second ventral segment not tuberculate or carinate, .... 5. 



5. Head, thorax, or abdomen more or less reddish, 6. 



Head, thorax and abdomen not reddish, 8. 



6. Entirely red, rutilus. 



Not entirely red, 7. 



7. Legs and middle segment reddish ; thorax with golden pile, . 



tegularis. 



Abdomen except apex red ; otherwise the insect black ; thorax 

 without pale pile ; wings fuscous, basirufus. 



8. Wings subhyaline, more or less fasciate or spotted with fuscous, 



9. 



Wings otherwise colored, 15. 



9. Wings not distinctly fasciate, with a small, variable cloud in 



the vicinity of the second submarginal cell; fore tibiae and 



tarsi and antennae testaceous, varipes. 



Wings bi- or trifasciate, 10. 



10. Hind tibiae very strongly serrated, 11. 



Hind tibiae feebly or indistinctly serrated, 12. 



11. The tarsi and fore tibiae red, as are also the seven basal joints of 



antennae ; middle segment somewhat rugose. Length 10 mm., 



rufitarsus. 



Legs and antennae testaceous ; mesopleurae and middle segment 

 with silvery pubescence. Length 5 mm., serrulus. 



19 



