320 MUSEO NACIONAL DE H. NATURAL DE BUENOS AIRES 



lata ita ut parte supera interne fere semiorbiculariter emarginata, securi- 

 formi, a subantennali linea suturali nigra separata; clypeo scutello faciali 

 dimidio infero -interno subtangente nam lineóla nigra interposita, a di- 

 midio externo marginis clypearis sepárate antrorsum producto et angu- 

 lis acuminatis nigris extrorsum directis, pone ángulos a cunea nigra 

 longitudinaliter deorsum compressa suffultis, emarginatione media amplia 

 angulis internis sat obtusis, inter eos rubro- píceo -marginato, reliquo 

 margine nigro, et prope basin infra maculas subantennales utrinque 

 fusco -unipunctato; labro nigro; mandibulis nitidis, nigris, paulo ante 

 médium et ultra eum ápice excepto obscure rufis, in fovea basali externa 

 juxta basin macula triangulari flava; pone oculi extremitatem superam 

 in capitis parte postica et infera fascia procurva insólita, sat lata quasi 

 juxta mandibulae basin terminata. 



Thorax nitidus sparse leviterque punctatus, pleuns nitidulis, punctis 

 haud densis intensiore impressis, in segmento mediario minoribus den- 

 sis, pilis utnnque ranonbus; reliquo ut in ?; in ala carpo flavo; pedi- 

 bus tamen nigris, breviter albo- vestitis, apicem versus parce rufescenti- 

 bus, unguiculis ápice nigro, calcaribus fulvescentibus, genubus I et II 

 minime flavidis. 



Abdomen ut in femina, segmentis T -5" tamen flavo -fasciatis, fasciis 

 postice utrinque vix emarginatis, 5" in medio lineóla obscura íascia mo- 

 dice interrupta, in 2" fascia deficiente, utrinque tamen macula flava pone 

 callum lateralem; ventre piceo, nitidulo, leviter punctato, tenuiter cinereo- 

 villoso, postice excavato ad finem parum fulvescenti-rufo. 



Long. 8, cap. lat. 3, thoracis abdominisque 2 \, ala 6, antenna 2 I mm. 



Argentina. Santafé: Saladillo prope Rosano (2 ^ et 1 cj in II. 22, 1920, 

 M. P. Gómez legit). 



COHORS IV. 



Corpore saepissime nigro plus minusve flavo - maculato, et fasciis in 

 dorso abdominale in medio interruptis. 



1. Pedibus obscuris, ad partim piceis vel nigris, 



vel fere nigris, aut plus minusve obscure rufes- 



centibus 2. 



= (Vide quoque in Cohor. III et V, dilem. res- 



pect. 11 ad partim et long. 8-9mm. — Ps. pic- 



ta). — (Et in Cohorti V dilemma 7 Ps. interrupta, 



long. 8-9 mm.). 

 — Pedibus rufis 9, 



