E. L. holmberg: delectus hymenopt. argentinus. 433 



Jori, deinde -J", poatremd 1"^; cellulis medinli ct mhmediali in 

 eodem. puncto terminatis; ahirum, j)o.sti.airum distantia Ínter 

 apicem celluhi' suhmediaUs et ori.ginem renulce cuhitalis et 

 nenndi fransDer.so-siihniediaíiy longitud.iite feré irqiialibm. 



Pedes haud insolifi; calcar I pont vdiim breve, acutum, sursüni cur- 

 i-atum: 11 ad apicem intror.se ciirratum: III qmque ad apicem, 

 posticuin latiiis, lanceolatum, pectinatum; tibia et metatarma 

 III dense villosi (gen. Centris instar); ungiiiculu' paulo jwat 

 médium dente instructce. 



Abdomen cordatiim, ovato-lanceolafirm, thorace tafias, fcrr niidiiDi. 



Mores forsán ut in g. Centris. Specimeu siiigulnm femineum á me- 

 tijDso captum vidi. 



52. Chaonana iiiolanoxanllia, Hoijir,. n. sp. 



Q . Nigra; antennis piceis inferné rufeseentibus, soajio nigro anticé flavo; ma- 

 cula trianniilari ante clypei marginem basaleni, clypeo ad margineni apica- 

 lem, labro, mandibulis piceis macula basali, scutello utrinque et in medio, 

 postscutello, segmentorum abdominalium faseia media, flavis; thorace 

 fulvo-hirtü inferné albo-villosus; tefíulis testaceis; alis subhyalinis mar- 

 gine postico parúm infuscatis, venulis piceis; pedibus III fulvescenti-villosis; 

 scopulis ferrugiiieis. — Long. 13 mm. 



9. Caput nigrum, fnlvescenti-villosiim, in vulto albescens; cari- 

 na módica inter antennas clypeiqne apicein feré attingente dona- 

 tiim; facie maculis tribus flavis, triangularibus, una supra clypei 

 marginem basalem, alteraque utrinque orbitali, infera: clj'peo flavo, 

 margine apicali testaceo, ad basin in medio nigro-maculato; laljruní 

 flavum aurato-villosum; mandibulis tertio basali flavo, reliquo 

 satúrate ferrugineis ima basi nigra aurato-ciliatis; antennis pieeis 

 inferné rufeseentibus, flagelli segmento 1" nigro; scapo in condylo 

 et obliqué ad apicem nigro, reliquo flavo; genis albo-villosis. 

 Thorax iiiger fulvo-hirtus, inferné albo-villosus; scutello fascíola 

 utrinque atque macula fasciolari media, semilunari, procurva, 

 postscutellique fasciola transversa, flavis; alis diluté infuscatis 

 margine postico atque cellulas radialis fasciola costali saturatiori- 

 bus, margine postieo vix violaceo-micante atque parúm iridescen- 

 tibus, venulis piceis propé basin pauló rufeseentibus; tegulis niti- 

 dis, ferrugineis; pedibus nigris brevitér fulvescenti-villosis, tibia 

 metatarsoque III fulvo-aurato-villosis; scopulis ferrugineis; I et II 

 femoribus ad apicem tibiisque ad basin flavis; femore III dense 

 breviterque imo ápice fulvescenti-villoso; tibia spatio basali fusco - 



Anal. Mus. Nac:. Bs. As., Skkie 3", x. 11. Diciiímiíhe 4, 1903. 28 



