1902.] NATURAL SCIENCES OF PHILADELPHIA. 49 



coarsely punctured, toward apex becoming striato-punctate, the 

 apex with two well -separated teeth, subemarginate ; pronotum 

 sharply margined, subdentate, and like the dorsulum, though more 

 closely, with deep separated punctures ; postscutellum entire ; 

 middle segment broadly depressed or concave, strongly punctured, 

 rugoso-punctate in concavity, which is not margined, no horizontal 

 surface medially ; first dorsal segment behind carina broader than 

 long, with strong pimctures, the carina sharpest laterally ; second 

 dorsal segment, viewed from the side, rather angulate toward base, 

 where it is scarcely punctured, the punctures beginning behind base 

 and increase in size toward apex, where they are quite coarse, at a 

 point between middle and apex the segment is transversely de- 

 pressed, the apical margin is dentiform medially, ventrally this seg- 

 ment is depressed medially, prominent basally, the punctures rather 

 shallow ; remaining segments except last strongly punctured apically, 

 less coarsely toward base ; wings subhyaline, yellow in costal cell, 

 and with apical margin and most of marginal cell fuscous, stigma 

 yellow-broAvn ; nervures darker. Length about 9 mm. 



c?. — Colored much like the ?, with the flagellum more or less 

 brown, fulvous beneath ; clypeus yellow, but usually more or less 

 dark medially, shorter than in 9 and not striated ; antennae with 

 terminal joint short and thick, broadly and obliquely truncate, the 

 length of this joint about equals that of the penultimate, the two 

 together barely as long as the eleventh joint ; pimctuation coarser 

 than in ? ; hind tibiae or tarsi not unusually modified. Length 

 8-9 mm. 



Corumba (April); Chapada (December). Seven 9, nine c? 

 specimens. 

 Odynerus (Anoistrooerus) fulvimaculus n. sp. 



9. — Black; head (except fl-shaped spot including ocelli) and 

 pronotum orange; antennae orange, the flagellum above darker 

 medially ; clypeus, mandibles except inner margin and tips, tegulae 

 except brown middle, large spot on mesopleurae above scutellum, 

 postscutellum, pogtero-lateral angles of middle segment, and a 

 fascia at apex of segments 1-5, yellow, that on segments 1 and 

 2 much the broadest ; legs : the anteriors entirely, the medials except 

 upper surface of coxae, trochanters and base of femora, and of the 

 hind pair a spot on coxae at apex, a line on the femora beneath and 

 the tibiae except internally, yellow; hind tarsi brownish. Head 

 4 



