BRÉTHES: HIMENÓPTEROS DE LA AMÉRICA MERIDIONAL. 71 
segmento 2. area media sat longe triangulari vix apicem segmenti 
attingente, impressionibus discalibus antice angulatis, in medio pos- 
ticem versus modice elevatis, marginibus striolatis, linea antero-late- 
rali cum impressionibus confusa, segmento 3.” basi striolato etiamque 
4.9, 3. in disco basi area media triangulari notato et pone hane aream 
paulum punctato, area antero-laterali medium versus sat elongata et 
postice striata. 
1 2 de La Rioja (Dr. BoutHérY leg.) —Col. Mus. Nac. Buenos 
Alres. 
Iphiaulax secutor var. semiventris BRETHES, n. var. 
2 A typo differt: abdomine piceo-nigro, segmentis 2 primis plus 
minus obscure ferrugineis. 
1 9 de Mendoza.—Col. Mus. Nac. Buenos Aires. 
Iphiaulax ultor BRETHES, n. sp. 
2 Abdomine rubro, mesonoto, scutello postice el segmento mediario 
longitudinaliter plus minus obscure ferruginers, palpis testa- 
ceis, cetero migro; alis paululum fuscis, anticis stigmate flavo, 
cellulis cubitali 1.2 transverse, discoidala postica basi et contra 
venam transverso-cubitalem 2.** hyalinis. Long.: 7 mm. Án- 
tennae detritae. Terebra: 4 mm. 
Politus, facie rugulosa, genis modice longis, lineis parapsidalibus 
distinctis, abdomine segmentis 1. polito, impressionibus longitudina- 
libus vix distincte striatis, 2. polito, area media longe triangulari vix 
apicem segmenti attingente, impressionibus discalibus antice acutis, 
posticem versus modice elevatis, margine interiore e punetis impressis 
formata, linea antero-laterali paulum notata, segmentis 3-5 bas striatis, 
3. in medio area basali triangulari paulum notata, disco sat sparce 
irregulariter punctato, area antero-laterali medium versus modice 
elongata et postice striata. 
1 9 ¿de la República Argentina ?—Col. Mus. Nac. Buenos Aires. 
Iphiaulax hilaris BRETHES, n. sp. 
9 Ruber, capite, antenmis, valvisque terebrae migris; palpis, sterno, 
