328 Prof. Westwood on 



3. Trigonahjs IvQuhris, n. sp. 



Nigra, punctatissiina, llavo varia ; alis anticis margine 

 costali fusco snft'uso. 



Long. Corp. lin. 4^; expans. alar, antic, lin. 9. 



Habitat in Amazonia. Dom. Bates. In Mus. Hopeia- 

 no, Oxonige. 



Caput nigrum ; clypeo, macula parva ad marginem an- 

 ticum oculoruni, alterisque duabus suborbitalibus, mandi- 

 bulisque flavis, harum dentibus uigris ; antenna nigrfe, 

 27-articulat8e. Thorax niger, collaris margine supero, 

 punctis duobus anticis mesonoti, alterisque duobus niinu- 

 tis ad latera scutelli, post-scutelli liuea tenui in medio 

 emarginata, flavis. Abdomen segmentis postice flavo 

 tenue marginatis ; infra in medio profunde incisis. Alse 

 hyalingSj margine costali fusco pone stigma magis suffuso. 

 Pedes nigri^ tibiis extus albidis. 



NOMADINA, n. g. 



Genus novum, e sectione Terehrantium ; Trigonalydi 

 proximum, Nomadam {Apiduni) quodammoclo simu- 

 lans. 



Corpus breve robustum. Caput transversum, lobo 

 transverso antico, in quo insident antennae, thorace bre- 

 viores, sat crassge, 16-articulata3, articulo Imo brevi. 

 Ocelli 3, parvi ; mandibulee latae, subquadratte, fere plauas, 

 4-dentat8e ; reliquge oris partes fere obsoletao ; palpi la- 

 biales brevissimi, subconici. Thorax ovatus, collari supra 

 inconspicuo. Pedes breves, robusti, simplices, unguibus 

 bifidis. Alte anticge cellula una marginali, 4 submarginali- 

 bus ; Ima magna accepit venam lam recurrentem, 2da 

 parva trigona, otia parva quadrata accepit venam 2dam 

 recurrentem; cellulis 3 discoidalibus. Abdomen thorace 

 paullo majus, depressum, sub-spatulatum ; segmento 3tio 

 ventrali in tuberculo medio conico elevate, 4to inciso. 



Novtadina SmitJm, n. sp. 



Lutea, fusco varia ; capite maculis 4 parvis inter et 

 pone oculos ; thorace linea media ad post-scutellum 

 extensa, maculisque duabus oblongis mesothoracis, 

 fuscis ; margine postico segmentorum abdominalium 

 albido ; alis concoloribus, stigmate venisque casta- 

 neis. 



Long. Corp. lin 5 ; expans. alar, antic, lin, 10^. 



Habitat in Amazonia. Dom. Bates. In Mus. Smith. 



