JOURNAL 



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Vol. XV. DECEMBER, 1907. No. 4. 



Class I, HEXAPODA. 



Order I, HYMENOPTERA. 

 NEW NORTH AMERICAN HYMENOPTERA. 



By J. C. Crawford, 

 Washington, D. C. 



Superfamily CHALCIDOIDEA. 

 Subfamily Monodontomerin/e. 



The genus Z>iomon/s Walker has the mesepisternum deeply incised 

 above the middle and will therefore have to be placed in the Tory- 

 minae, where it can be separated from the other genera by the tooth 

 on the hind femora. In his classification of the Chalcidoidea, Dr. 

 Ashmead has used the presence or absence of teeth on the hind femora 

 as a secondary character to separate the Toryminae and the Monodon- 

 tomerinse. This will have to be dropped or at least modified to show 

 the above exception. 



The following table will separate the winged forms belonging to 

 the subfamily and define three new genera. The table has been made 

 to include all of the genera which were put in this group by Dr. 

 Ashmead, except Diomorus, to show more clearly the affinities of the 

 new genera. 



Table of Genera of Monodontomerin^. 



1. Antennae with two ring joints , Plesiostigntodes Ashm. 



Antennce with only one ring joint 2 



2. Scutellum with a cross furrow before apex 3 



Scutellum without a cross furrow before apex 5 



177 



