114 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



Recurrent nervure straight, not curved, and forming a straight line witli the 

 transverse cubital nervure; abdomen rounded. 



(892) Monocionus Haliday. 



5. Metathorax much humji-shaped (893) Oelonolns Forster. 



Metathorax normal. 



Radius much elongated, inclosing more than two-thirds of the marginal 



cell (894) Aditu^ Forster. 



Radius abbreviated, inclosing scarcely one-third of the marginal cell. 



(895) Aphklim Nees. 



6. Second discoidal cell present, complete. 



Head transverse, the temples narrow; subdiscoidal nervure originating 

 above the middle of the discoidal nervure (896) Dinretus Forster. 



Head oblong, the temples broad, full; subdiscoidal nervure originating 

 from the middle of the discoidal nervure (897) Dyscritus Marshall. 



Tribe II. TRIOXINI. 



The species falling" in this tribe have 710 basal nervure in the hind 

 wings, and the venation of the front wings is less developed, the cubital 

 cells and most of the discoidal cells being absent. 



Seven genera have been characterized, as follows: 



T.VBLE OF GENERA. 



Radius or marginal vein not entirely absent 2 



Radius or marginal vein entirely absent (898) Parallpsis Forster. 



2. Transverse cubital nervure in front wings absent 3 



Transverse cubital nervure in front wings present (899) Li/aljjJih'biin Forster. 



3. Second discoidal cell entirely absent or incomplete 4 



. Second discoidal cell distinct. 



Postmarginal vein longer than the radius; female abdomen imthout prongs 

 at apex ( 900) Lipolexis Forster. 



Postmarginal vein shorter than tlie radius; female abdomen with, prongs at . 1 

 apex (901 ) Trioxijn Haliday. I ; 



4. Submedian cell not closed at apex, confluent with the second discoidal cell, the j 



transverse median nervure absent. j ' 



Post-marginal vein shorter than the radius in both sexes; female irlUi horn- j j 



like appendages or prongs at tip of abdomen (f^'Ol) Trio.ci/s Haliday. I ; 



Post-marginal vein longer than the radius; female irlthoitt prongs at tip of 



abdomen (900) Llpoh'xis Forster. 



Submedian cell closed at aj)ex, the transverse median nervure distinct; second j : 

 discoidal cell entirely absent (902) Adiali/tun Forster. , 



Sulafttixaily II. P^VX^^LOIVIMHSTJE;. j j 



1862. Poc%fo?H,?Hrt/o((/;i', Family XllI, FoRSTEK, Verb. d. naturh. Ver. pr. Rheinl., 1 I 



XIX, ])p. 228 and 247. 

 1894. PacJiylommatinn', Subfamily, Ashmead, Proc. Ent. Soc. Wash., IH, p. 54. i 

 1896. Pachylommanmx Szepligeti, Termes. Fiizetek, XIX, p. 310. I 



This group is of small extent, and on account of the peculiar shape j f 

 of the head, the venation of the wings, and its abdominal pectiliari- f 

 ties is probably one of the most remarkable groups in the family | 

 BraconidiB. ,1 



