BRETHES: HIMENÓPTEROS DE LA AMÉRICA MERIDIONAL. 51 
Iphiaulax Hiibrichi BreETHES, nm. sp. 
2 Ruber, capite, antennis, mesonoto lineiss 2, scutello postice, sey- 
mento mediario longitrorsum in medio, mesopleuris linea, 
sterno, coxis, femoribus (anticis basi apiceque excepte), valvis 
terebrae nigris; palpis testaceís etiamque tibiis et tarsis plus 
minusve, alis fuscis, dimidio basali anticis fascia sub stigmate 
et paululum. contra venam transverso-cubitalem 2. hyalinis, 
stigmate flavo. Long.: 11 mm. Antennae: 12 mm. Terebra: 
2 mm. 
Politus, facie punctulata, sub pube grisescente vix obtecta, genis 
mediocribus, segmento 1. abdominis polito, intus extusque carina 
antero-laterali transverse striato, segmento 2. area media sat late 
triangulari vix medium segmenti superante, basi transverse impres- 
sula, impressionibus discalibus anticem versus gradatim humiliori- 
bus et sat acutis, margine interiore oblique paulum striato, linea 
antero-laterali nulla, segmento 3. polito, disco sat sparce irregulari- 
ter punctato, area antero-laterali paulum medium versus elongata, 
segmento 4. 3.2 paulum densius (haud dense) punetato. 
1 2 de Rosario (HUbBrICH leg.). 
Iphiaulax melanopyga BRETHES, N. sp. 
Q Niger, mesothorace et abdomine usque ad basin segmenti 4. 
rubris, alis fuscis, anticis dimidio basali dilutioribus, stigmate 
flavo, cellulais cubitala 1.2 transverse et discoidali postica bast 
et contra venam transverso-cubitalem 22% hyalims. Long.: 
9 mm. Antennae detmtae. Terebra: 3,5 mm. 
Politus, facie punctulato-opaca, genis mediocribus, lineis parapsi- 
dalibus distincetis, segmento 1. abdominis polito, impressionibus 
utrinque aream mediam intus longitrorsum vix distincte punctula- 
tis, segmento 2. area media vix apicem segmenti attingente, im- 
pressionibus discalibus in medio sat elevatis, margine interiore pos- 
ticem versus magis impressa, linea antero-laterali brevi, marginibus 
punctulatis, segmento 3.2 basi vix obsolete striolato, area antero-la- 
terali medium versus sat elongata, in medio paulum impressa. 
