380 PROCEEDINGS OF THE ACADEMY OF [1897. 



second discoidal cell is much higher than broad. In the two latter 

 characteristics it approaches the Mexican B. nitens, but differs in 

 color of wings and larger size (10 mm.). The clypeus is dentate 

 laterally as in Saussurei, of which it is, perhaps, the $ . 



Scapheutes brasilianus Hdl. 



One specimen. Chapada (March). 



Gorytes specialis Sin. 



Four specimens that agree fairly with the description of specialis. 

 It is evidently close to G. polybia Hdl., but the suture between dor- 

 sulum and scutellum is not foveolate. Chapada (January) ; Marurii ; 

 Santarem. 



Gorytes facilis Sm. 



Four specimens. Corumba (January, April) ; Santarem. This 

 species belongs, apparently, to the group of G. simillimus as defined 

 by Handlirsch in his monograph. 



Gorytes scutellaris Spin. 



Marurii (April) ; Chapada (April, November) ; Santarem. Nine 

 examples. 



Gorytes seminiger Dhlb. 



One specimen. Rio de Janeiro (November). 

 Gorytes cayennensis Spin. 



Six specimens. Marurii (April) ; Rio de Janeiro (November) ; 

 Santarem. 



Gorytes fuscus Tasch. 



Santarem. One specimen. 

 Gorytes valens n. sp. 



9 . — Black ; labrum, clypeus, face below antennae, scape beneath, 

 fore femora and tibife beneath, and apical margin of abdominal 

 segments 2-5, bright yellow ; anterior tarsi, except the first joint 

 internally, and a spot on apical joint, and a ring at base of joints 2, 

 3 and 5 of the remaining tarsi, pale yellow ; head and thorax with 

 long, grayish hairs, unusually hirsute for Gorytes; eyes strongly 

 converging beneath ; ocelli in a low triangle, situated in depres- 

 sions or pits : space between hind pair greater than that between 

 them and eyes; clypeus large, convex, somewhat triangular, its fore 

 margin broadly truncate; flagellum rather strongly clavate, the 

 first joint at least twice as long as second ; dorsulum with a distinct, 



