30 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxhi. 



Second abdominal segment a little longer than the third, smooth and 



polished, the post petrole striate (139) Zaphleges Forster. 



(Tj'pe, Phygadeuon leucosiigimus Gravenhorst. ) 

 17. Fovea at base of scutellum divided by a sharp carina, metanotum completely 

 areolated, the areola transverse, trapezoidal. 



(140) Endai^i/s Forster. 

 Fovea at ))ase of scntellnm vuf divifled l>y a sharp carina; metanotnm completely 

 areolated, the areola longer than wide, hexagonal. 



(141 ) Bdrijiiticd Forster. 

 IS. INliddle joints nf tlagellum above in female iiut flattened, in male clothed usually 



with short, shaggy hairs 19 



Middle joints of tlagellum above much flattened. 



Metanotum exareolated or very incompletely areolated; spiracles larrjc, linear 



or elliptical (142) Giraudia Forster. 



(Type, Cnjptvii congruen Gravenhorst.) 



Metanotum with a long middle area, the areola and Ijasal area very united; 



si)ii-acles n<jt large, oval; subdiscoidal nervure in hind wings 



originating very close to the origin of the transverse median 



area ( 143) Srht'nMa Forster. 



(Type, Crgptus graininicuhi Gravenhorst.) 



19. IMetatliorax with four distinct prominent teeth; disco-cubital nervure broken 



by a stumpof a vein near the middle. (144) lihcmbobius Forster. 

 (Type, Phtigadeuon quadri.ipinosiis Gravenhorst. ) 

 Metathorax at most with two prominent teeth, often unarmed. 



Hind til)iie normal 20 



Hind tibia' toward apex broadened and broadly flatly truncate. 



(145) Coloniema F(">rstei-. 



20. Metanotum at base usually more or less incompletely areolated, the areola and 



basal areas confluent, or the former is not separated from the 



middle lateral areas by a sharp carina 21 



Metanotum at base completely areolated 24 



21. Lower tooth of mandibles much longer than the upjier tooth. 



Head (puK Irate; transverse median nervure interstitial with the Ijasal nerv- 

 ure (146) EcportJuior Forster. 



(Tyjie, Phygadeuon forlipcii Gravenhorst.) 

 Lower tooth of mandil)les shorter or no longer than tlie upper tooth. 



IMetatlioracic spiracles round, or very short oval, scarcely longer than 



wide 22 



INIetathoracic spiracles fully twice as long as wide, or nearly. 



Areola seen from above pyramidal; metathoracic spiracles iK)t (juite 



twice as long as wide (147) Neleophron Fijrster. 



Areola seen from above not pyramidal; metathoracic- spiracles twice or 

 more than twice longer than wide (148) Epiphulms Forster. 



22. Head cubiform. 



Femora somewhat short and swollen; antenn;e short, stout; metanotum 

 without or witli areas confluent (149) Ecpaglus Forster. 



(Type, Phygadeuon hrevicornis Gravenhorst.) 

 Head 3*0/ cubiform. 



Di.sco-cul)ital nervure '»'///( a short jirocess (1'"'0) Odonlonrura Fors^ter. 



Disco-cubital nervure iiithout a process. 



Second recurrent nervure received by the areolet at or beliind the mid- 

 dle - 23 



Second recurrent nervure received by the areolet before the middli'. 

 Metanotum coarsely rugose, the areola very high and narrow; flrst 

 abdominal segment wholly striate. ..(151) UlotJiymus Forster. 



