1902.] NATURAL SCIENCES OF PHILADELPHIA. 47 



pronotum, sparsely so on mesopleurse ; pronotum subdeutate ; post- 

 scutellum slightly crenulated ; middle segment broadly depressed or 

 subconcave, not margined, with but a slight trace of a horizontal 

 surface medially, postero-lateral region convex, especially above; 

 hind tibiae and tarsi as in c? of convolutus ; abdomen much as in 

 convolutus^, but the second segment moi-e reflexed at apex, the ven- 

 tral swelling less strong and the punctuation stronger ; wings as in 

 that species. Length 8-9 mm. 



Corumba and Pedra Branca (April). Eight specimens. 



Odynerus (Stenancistrocerus) areatus n. sp. 



cf. — Black; clypeus at base and two parallel lines apically, scape 

 beneath, spot at base of antennse, in eye-emargination, and at top 

 of cheeks, line on mandibles and on pronotum posteriorly, some- 

 times a spot on mesopleurse above, and a line at apical margin of 

 all segments, including last, yellow ; flagellum beneath fulvous ; 

 tegulse variable, black or yellow testaceous; legs black-brown, 

 knees and tarsi lighter, anterior tibise yellowish in front ; head very 

 deeply punctured, especially the front; hind ocelli not margined 

 internally by a tubercle, the space between them about equal to 

 that which separates them from the eyes; clypeus with shallow 

 punctures, subpyriform, almost as broad as long, sharply and tri- 

 angularly emarginate, the teeth acute and each bearing a tolerably 

 distinct carina extending back toward middle of clypeus ; antennaj 

 hooked, the last joint curved, rather slender, about as long as joint 

 11, which in turn is about one-fifth longer than 10; thorax deeply 

 punctured ; pronotum dentate laterally ; scutellum impressed ; post- 

 scutellum entire, triangular ; middle segment broadly concave, no 

 horizontal surface medially, the postero-lateral angles prominent, 

 above and on sides rugosely punctured, in the concavity deeply 

 punctured ; hind tibise and tarsi not modified ; fii'st segment strongly 

 punctured, and behind the carina, laterally, there is a large, 

 smooth, depressed area ; second segment not so strongly or as closely 

 pimctured above, not reflexed, the ventral surface with shallow 

 punctures, prominent in a transverse way, near base ; remaining 

 segments strongly punctured apically, finely so toward base ; wings 

 dark subhyaline, more fuscous along anterior margin ; nervures and 

 stigma dark brown. Length 9 mm. 



Chapada (March, December). Two specimens. 



