4 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



2. (1) Superior genital plate with each element broadly rounded and bluntly 



toothed if toothed at all (figs. 20, 21, 23) 3 



Superior genital plate with each element having strong spurlike processes 

 (figs. 14-19, 22) 5 



3. (2) Superior genital plate with each element broadly rounded (fig. 23). 



9. C. pisis 



Superior genital plate with each element rounded and bluntly toothed 

 anteriorly (figs. 20, 21) 4 



4. (3) Superior genital plate greatly projected mesially on posterior edge 



(fig. 20) 12. C. tifla 



Superior genital plate indented mesially on posterior edge (fig. 21). 

 5. C. meleager 



5. (2) Posterior spurlike processes on superior genital plate directed inward to- 



ward one another; anterior spurlike process greatly reduced and 



directed distad (fig. 22) 4. C. naka 



Posterior and interior spurlike processes on superior genital plate distally 

 directed; anterior spur like processes not as greatly reduced (figs. 

 14-19) 6 



6. (5) Anterior spurlike processes on superior genital plate widely separated and 



much larger than posterior spurlike processes (fig. 14) . . 1. C. keta 



Anterior and posterior spurlike processes on superior genital plate not 



widely separated; if so, then anterior spurlike processes not larger 



than posterior spurlike processes (figs. 15-19) 7 



7. (6) Posterior spurlike processes greatly reduced or rounded and lobelike 



(figs. 16, 19) 10 



Posterior spurlike processes large, sharply pointed and extended (figs. 

 15, 17, 18) 8 



8. (7) Anterior spurlike processes on superior genital plate sickle shaped and 



widely separated from posterior spurlike processes (fig. 17) 



8. C. geniilla 



Anterior spurlike processes on superior genital plate nearly straight, not 

 sickle shaped and not widely separated from posterior spurlike proc- 

 esses (figs. 15, 18) 9 



9. (8) Posterior margin of superior genital plate between posterior spurlike 



processes nearly straight (fig. 18) 11. C. trebula 



Posterior margin of superior genital plate between posterior spurlike 

 processes with broad shallow lobes and concave in middle (fig. 15). 



7. C. anapa 



10. (7) Posterior spurlike processes on superior genital plate rounded and lobe- 

 like (fig. 16) 6. C. malta 



Posterior spurlike processes on superior genital plate reduced and bluntly 

 acute, not lobelike (fig. 19) 13. C. cinniana 



