170 PROCEEDINGS OF SOCIETIES. 



Subgenus 4. Opazon n. 



Mandibulae deflexae rostriformes. 



A single species, B. parvula, somewhat like a Biapria. 



Genus 4. DIAPEIA Latreille, — Psilm Jurine. 



Antennae in fronte porrecta insertae, ab epistomate distantes ; maris 

 13-, vel 14-articulat83, articulo tertio integro, quarto difformi; feminae 

 12-, vel 13-articulatae, apice crassiores. Palpi maxillares mala longiores, 

 5-articulati ; labiales 2-articulati. Alae fere exareolatae, aut nulla?. 

 Mandibula intra apicem unidentata. 



Synopsis of the Subgenera. 



Antennae of the male 



13-jointed: of the female 



12-jointed 7. Mionopria. 



13-jointed: base of second abdominal segment 



channeled « -6. Glyphidopria. 



smooth: petiole 



covered at the tip by the base of the second 



segment, 4. Spilomicrus. 



uncovered above and beneath equally. ... 5. Paramesius. 

 14-jointed : of the female 



13-jointed 1. Corynopria. 



12-jointed: base of second abdominal segment 

 smooth : subcostal vein 



simple, 2. Diapria. 



with a transverse branch before the end. . . 3. Basalys. 

 impressed: first joint of antennae 



angular. . 9. Galesus. 



linear. 8. Aneurhynchus. 



Subgenus 1. Corynopria n. 



Antennas maris articulis 14, quarto integro; feminae articulis 13, 

 ultimo longe maximo. Alae vena unica capitata. Abdominis segmen- 

 tum secundum laeve, summa basi leviter tomentosum. 



1. petiolaris ETees, — parvula H.-Schaeffer: nigra, pedibus ferrugi- 

 neis, petiolo rufo-piceo membrana crispa involuto; — antennis articulo 

 primo longissimo, articulis nagelli ovatis : mas ; — antennis ferrugineis, 

 capitulo fusco articulis tribus, ultimo penultimum sextuplo superante : , 

 femina. 



Alae hyalinae, vena humerali ferruginea, lineola transversa infumata hujus apieem 

 transcurrente, aream basalem subglabram definiente ; alae maris apice saepius leviter re- 

 tusae aut fere emarginatae ; in femina vix ita. 



2. cincta n. : nigra, antennis basi pedibus petioloque villoso testa- 

 ceis, antennis ferrugineis, articulo ultimo penultimum decuplo super- 

 ante: femina. 



Alae totae microscopic^ pubescentes, apice rotundatae, vena ferrnginea, lineola sub ejus 

 apice obsoletiore. Caput subglobosnm. 



