44 PROCEEDINGS OF THE ACADEMY OF [Feb. 



CONTRIBUTIONS TO A KNOWLEDGE OF THE HYMENOPTERA OF 

 BRAZIL, NO. S.-EUMENID^, continued (GENUS ODYNERUS). 



BY AVILLIAM J. FOX. 



As in most of the preceding papers of this series the work is 

 based upon material collected by Mr. Herbert H. Smith, and 

 which lias now become the property of the Carnegie Museum, Pitts- 

 burgh, Pa. The types of all the new species described in these 

 papers^ will thei'efore be under the care of that Museum, 

 Odynerus (Stenancistrocerus) apicipennis u. sp. 



?. — Black, clothed with a grayish pile, especially on abdomen; 

 anterior orbits below emargination, dot on tegulse posteriorly, inter- 

 rupted line on postscutellum anteriorly, line at apex and at sides of 

 first dorsal segment, and sometimes an obscure line at apex of 

 second, yelloAV ; fore tibise internally yellow, the tips of all femora 

 with a yellowish or reddish spot ; antennse reddish beneath toward 

 apex ; w'ings black basally, especially in costal region, clear 

 apically; head with a fovea behind ocelli, and on each side of 

 fovea a small patch of stiff hairs ; front deeply punctured ; clypeus 

 broader than long, subpyriform, shallowly punctured, emarginate 

 so as to present two acute, separated, teeth ; scape fidly as long as 

 foUoAving four joints united; space between hind ocelli, if anything, 

 slightly less than that between them and eyes ; pronotum margined, 

 obtuse laterally ; dorsulum with strong, rather close punctures, the 

 scutellum less closely punctured, flat, subquadrate; postscutellum 

 subtriaugular, entire ; middle segment Avith strong, separated pimc - 

 tures, not so coarse as on dorsulvun and becoming sparse apically 

 and on sides, broadly depressed down middle, not ridged, presenting 

 two convex surfaces ; carina of first segment not very strong, the 

 longitudinal furrow of upper surface rather feeble, the surface 

 behind carina strongly punctured, anterior to it sparsely so ; dorsals 

 2-5 strongly punctured, the punctures becoming closer and coarser 

 from apex of segment 2, the last dorsal witli shallow punctures ; 



^ Except those described in Paper No. 6, which are in the Museu 

 Paulista of Sao Paulo, Brazil. 



