Contents 



Page 



Introduction v 



Materials studied vi 



Localities vii 



Bibliography vii 



Terminology vii 



Counts and measurements viii 



Subfamily Metopiinae 3 



Biology and distribution 4 



Key to the genera of Metopiinae 6 



1. Genus Pseudometopius 8 



2. Genus Acerataspis 11 



3. Genus Chorinaeus 12 



4. Genus Trieces 34 



5. Genus Hemimetopius 59 



6. Genus Metopius 59 



7. Genus Triclistus '. . . 107 



8. Genus Colpotrochia 127 



9. Cubus, new genus 135 



10. Genus Periope 136 



11. Genus Spudaeus 138 



12. Bothromus, new genus 142 



13. Genus Drepanoctonus 145 



14. Genus Leurus 147 



15. Genus Seticornuta 150 



16. Genus Carria 154 



17. Macromalon, new genus 158 



18. Genus Hypsicera 160 



19. Stethoncus, new genus 167 



20. Synosis, new genus 169 



21. Genus Exochus 170 



Figures 268 



Indices 303 



in 



