E. L. HOLMBERG: APID-E ARGENTIN^E o. PS/ENYTHIA 321 



2. cJ. Nigra, abdomine pedibusque magnam ad par- 

 tem píceo -nigris; subter antennam singuiam 

 macula oblonga albo-flavida (ut picturis ómni- 

 bus reliquis pallidis), scutellis facialibus sine 

 macula pallida; clypeo latissimo pallido, om- 

 nino anguste nigro-marginato; antice utrin- 

 que margine suaviter curvato deinde retrorsum 

 abeunte curvam h circuli desinente, producto 

 tamen ideoque emarginatione media latissima 

 lateribus magis divaricatis; mandibulis extremi- 

 tate obscure rufis; macula pone oculos, pronoto 

 in medio interrupte, callo humerali, puncto 

 parvo sed orbiculari in scutelli utroque latere, 

 metanoto, genubus I et II, et abdominis seg- 

 mentis 3° -5" fascia angusta, pallidis, 3" et 4" 

 linea obscura in medio interrupta et in 5. utrin- 

 que abbreviata interruptione media majori. — 

 Long. 7 ?, capitis lat. 3 h, thor. 2, et abdominis 



lat. 2 1 mm 50. ^.Ps.personata. 



— Alio modo picta 3. 



3. o. Subter antennam singuiam macula parva sub- 

 orbiculari, scutellofaciali in dimidio infero trian- 

 gulo fere aequilatero, clypeo, labro modice man- 

 dibulisque eburneis; flavis: pronoto in medio 

 interrupte, scutelli maculis duabus, metanoto, 

 abdomine segmentis 2" -4" fascia in medio in- 

 terrupta magis in 2" ubi macula parva utrin- 

 que tantum conspicua, in 3" fere integra in me- 

 dio lineóla nigra tantum divisa, in 4" sat late 

 interrupta; alis fere hyalinis ápice fusco. — Long. 



10^-12, capitis lat. 4-4 i, abd. lat. 3-3 J mm. 5\.(S.Ps.rosarina. 



— ^ (í. Abdominis segmentis \°-5° (interdum in o 



V-6°) fasciis flavis in medio interruptis 4. 



4. (o. Si species Ps. Emilia (n. 4, p. 282) natu- 

 raliter colorata est tune in Cohorti I, dilem. 4 

 recte manet; si maculae atque fascise carmineae 

 opus acidi cyanhydr., tune color naturale fla- 

 vum aut fiavidum et ab illa sublata recte quo- 

 quead IV^*" transtuli.— Fasciae abdominales alio- 

 qui in hac specie in medio interruptae partibus 

 separatis regulariter sensim retrorsum appro- 

 pinquantibus. — Long. 9 h, capitis lat. 3 i, abd. 



21 mm (S.Ps. Emilia). 



Anal. Mus. Nac. de H. Nat. Bs. As., tomo xxsi. 21 



