242 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



fourth; pronotum punctured similarly to the vertex; the lateral an- 

 terior angles not dentate; mesoscutum and scutellum punctured 

 similarly to the pronotum ; the scutum with faintly indicated notauli 

 posteriorly; the metanotum with widely separated punctures; mes- 

 episternum more sparcely punctured than the mesoscutum; propo- 

 deum coarsely, closely punctured, almost reticulate without ridges or 

 elevations; first tergite very coarsely punctured anteriorly so as to 

 be almost reticulate, posteriorly the punctures are more separated; 

 the second tergite with distinct, well defined punctures basally 

 and apically; the median area with setigerous punctures only; second 

 sternite with sparse, well defuied punctures j" the suture between the 

 first and second sternites strongly foveolate; legs normal. Black; 

 clypeus, frontal carina, a clot at the emargination of the eyes, a spot 

 on the superior posterior orbits, the anterior median area of the pro- 

 notum, tegulae, spot below, metanotum, propodeum, first segment, 

 narrow apical margin of the second tergite, dark rufous ; legs except 

 the anterior coxae dark rufous; antennae rufous to the sixth joint, 

 beyond that, brown; wings dark smoky; venation black, 



Miami, Florida. Described from one female collected August 13, 

 1913, by E. R. Sasscer and recorded as feeding on Anacardium excelsum 



Type.— Cat. No. 16853, U.S.N.M. 



Subgenus ODYNERTJS sensu strictu. 

 ODYNERUS MARGARETELLUS, new species. 



This species can be readily separated from all other American 

 species by the bright red second tergite, legs, and dense black hair on 

 the body. In structure it is also different from many of the American 

 species as the following description will show. 



Female. — Length 8 mm. Clypeus wider than long, gently evenly 

 convex, the anterior margin produced into a broad tooth which is 

 deeply emarginate, the lobes being obtusely pointed and well defined, 

 the surface with sparse, well-defined punctures which are smaller 

 medianly than apicaUy; the head below the supraorbital hne with 

 close, distinct pimctures which around the antennae become conflu- 

 ent; vertex and posterior orbits shining, with sparse, well-defhied 

 punctures; postocellar hne subequal with the ocellocular line; flagel- 

 lum short, thickening apically, the third joint distinctly longer than 

 the fourth and fifth which are narrower basally; pronotum with close 

 rather small punctures ; mesoscutum more sparsely pmictured; punc- 

 tures denser laterally; notauli well defuied, extending to the base of 

 the scutellum, diverging from the anterior third; suture between the 

 scutellum and scutum finely foveolate; scutellum shining, more 

 densely punctured posteriorly, parted by a faint median furrow; 

 metanotum sloping, opaque, finel}^ granular with a few large, irregular 

 punctures; propodeum sculptured similar to the metanotum, without 



