Explanation of Plate I. 



1. Bothrideres fryeri, sp. no v. 



2. Tyrtaeus singularis, sp. nov. 



3. Lascotonus scotti, sp. nov. 



4. Aphanocephalus binoiatus, sp. nov. 



5. Aphanocephalus svbdepressus, sp. nov. 



6. Ditoma cavicollis, sp. nov. 



7. Sarothrias eximius, gen. et sp. nov. 



8. Colobicones singularis, gen. et sp. nov. 



