512 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



ment of the marginal vein, the other at the beginning of the 

 postmarginal ; abdomen with the first and second segments 

 cupreous, the third golden green, the fourth purplish green, the 

 fifth and following segments all dark blue; ovipositor not 

 exserted beyond tip of abdomen. 



Reared from the beetle Amphicerus bicaudatus. 



CALLIMOMID^. 

 Key to Genera. 



1. Ovipositor exserted; antennae with one ring-joint; flagel be- 



yond* ring-joint 8-jointed 2 



Ovipositor not exserted Ormyrus p. 512 



2. Stigmal vein knobless, or without a large knob; abdomen 



in male not narrowed 3 



Stigmal vein with a very large knob; abdomen in male 

 much narrowed at base Megastigmus p. 513 



3. Posterior femora more or less dentate beneath 4 



Posterior femora not at all dentate beneath 6 



4. Posterior femora beneath with a single large tooth some 



distance from the knee, scutel with a transverse furrow 



behind the middle 5 



Posterior femora finely dentate and in some cases with a 

 single larger tooth in addition at some distance from the 

 knee; posterior margin of first abdominal segment not 

 incised Oligosthenus p. 514 



5. Posterior margin of first abdominal segment not incised 



in either sex Monodontomerus p. 514 



Posterior margin of first abdominal segment incised in 

 the middle in the female, incised or not incised in the 

 male , Diomorus p. 513 



6. Scutel with a distinct transverse furrow; first abdominal seg- 



ment with its posterior margin entire or incised 



Syntomaspis p. 514 

 Scutel without a transverse furrow; first abdominal segment 

 of male with its posterior margin incised Callimome p. 515 



Ormyrus Westwood. 



°0. ventricosus Ashmead. 



Female: length 4 mm. or nearly so; mostly uniform aeneous 

 green or dark greenish blue, including the scape and legs; an- 

 terior tarsal joints streaked above with brown, and the four ter- 

 minal joints of middle legs brown, the basal joints yellowish, or 



