Explanation of Plate II. 



1. Chrysops nigricornis Mats. 5. Chrysops japonicus VVied. ("$") 



2. Chrysops basalis Shir. 6. Haematopota forrnosana Shir. 



3. Chrysops basalis Shir. ("S") 7. Haematopota tristis Big. 



4. Chrysops japonicus VVied. 8. Haematopota sakhalinensis Shir. (#) 



9. Isshikia japonica Big. 



