124 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



3. Spiracles at extreme base of propodeum Dimeromicrus Cwfd. 



Spiracles about their own length eaudad of base of propodeum 



Idiomacromerus new genus 



4. Scutellum with a cross-furrow before apex 5 



Scutellum without a cross-furrow before apex 8 



5. Apical margin of first abdominal segment deeply incised medially. . 6 

 Apical margin of first abdominal segment not deeply incised medially 7 



6. Spurs on hind tibia? apical Monodontomerus \Vest\v. 



Spurs on hind tibia? much before apex Perissocentrus Cwfd. 



7. Hind femora with 2 large teeth Physothurax Mayr 



Hind femora with 1 large tooth Plesiostigma Mayr 



8. Metathorax with spiraclar sulci Hemitorymus Ashrn. 



Metathorax without spiraclar sulci 9 



9. Occipital foramen surrounded by a carina. 12 



Occipital foramen not surrounded by a carina 10 



10. First abdominal segment deeply incised medially at apex 11 



First abdominal segment not incised medially at apex; propodeum 



not with 2 medial carina? Microdontomerus Cwfd. 



11. Propodeum medially bicarinate Ditropinotus Cwfd. 



Propodeum medially not carinate Antistrophoplex new genus 



12. Apical margin of first abdominal segment not incised medially 13 



Apical margin of first segment incised medially 14 



13. Eyes conspicuously hairy Oligosthenus Forst 



Eyes not conspicuously hairy Cryptopristus Forst. cf 



14. Wings without a stigmal cloud 15 



\Yings with a stigmal cloud Cryptopristus Forst. 9 



15. Hind femora *vith a large tooth or prominent dentiform angle; 



metathorax not with two medial carinse 16 



Hind femora without a large tooth or dentiform angle; metathorax 

 with two medial carinse 9 , in cf obsolete Eridontomerus Cwfd. 



16. Propodeum with a medial carina Zaglyptonotus new genus 



Propodeum not carinate medially 17 



17. Hind femora basad of large tooth distinctly serrate. Websterellus Ashm. 

 Hind femora basad of large tooth not with small teeth or serrations 



Holaspis Mayr. 



IDIOMACROMERUS new genus. 



Occipital foramen margined, first abdominal segment incised medially 

 at apex; hind femora on lower margin excised at apex; marginal vein much 

 shorter than submarginal; postmarginal vein about half as long as marginal; 

 stigma knob not subsessile, the stigmal vein almost as long as postmarginal; 

 eyes hairy. 



Type of the genus: Idiomacromerus bimaculipennis Crawford. 



Idiomacromerus bimaculipennis n. sp. 



Female: Length about 3.5 mm. ; ovipositor 1.75 mm. Brilliant coppery 

 with greenish in places, head and thorax rugoso-punctate, antennae brown, 



