PARAHITU'A — BRACONIDiE. 68 



of the neck and abdomen differs considerably from that jriven by 

 authors of Sti-jthanus, and it is probable that our 8|)ecie8 is referable 

 to a new j^enus. 



Of MeyischuA, three species have been described from Pennsyl- 

 vania, Georgia and Texas. 



The 8i)ecies of this family aj)|)ear to be rare in collections. 



Family BRACONIDiE. 



This family (the Ichnenmoneti adttciti Nees) is closely relate*! to the 

 Ichneiunonidie, and is distinguislu-d l)y the ab'^'^'v-e of the second re- 

 current nervurc in the anterior vvinjp*, and by havinjjf the first sub- 

 marginai cell generally, though n(»t always, separated from the first 

 discoidal cell, and with the exception of one subfamily, the Aphidiinse, 

 by the non-existence of a real articulation between the second and 

 third abdominal segnjents. Sometimes these two segments are sol- 

 dered together, without a trace of a suture between them ; when the 

 junction is visible, it is called the suturij'orm (niieulution. In the 

 Apbidiiniv, all the segments are loosely articulated and flexible, and 

 consequently capable of being bent forward beneath the thorax. 



The following diagram of the neuration of the anterior wing of a 

 liraconid, from which the majority of the characters for the separa- 

 tion of the genera are taken, will serve to aid the student in locating 

 the various cells and nervures. 



Fig. 10. — Anterior wing of a Braconid. 



I, median cell ; a, submedian cell ; " iial cell ; 4, marginal or radial cell ; 5, first sub- 

 marginal or cubital cell; 6, second s\ Kirginal or cubital cell; 7, third submargitial or 

 cubital cell ; 8, first discoidal cell ; 9, second discoidal cell ; 10, third discoidal cell ; 11, 

 apical cell; a, costal nervure (costal and subcostal united); b, extenio-niediai ncrvure; 

 c, anal nervure; d, basal nervure; e, marginal nervure or radius ; e", first branch of mar- 

 ginal nervure or radius ; 6=, second branch of marginal nervure or radius ; e3, third branch 

 of marginal nervure or radius; f, first transverse cubital nervure; g, second transverse 

 cubital nervure ; h, transverse medial nervure ; i, cubital nervure or cubitus ; j, discoidal 

 nervure ; k, subdiscoidal nervure ; 1, recurrent nervure ; m, parastigma ; n, stigma. 



