OF WATERBUGS, ESPECIALLY OF CORIXIDAE. 43 



Species 13. C.faUeni Fieber (Fig. 23). 



Palae, ^, subtriangular, upper margins very convex and broad 

 near the base. One row of subelongate, acute pegs (about 

 twenty-six in number) running oliquely from the base, and 

 another row of six similar pegs near the upper margin at an 

 obtuse angle to the lower row. 



Species 14. C. distincta Fieber (Fig. 24). 



Palae, c^, cultrate. Two rows of rather small pegs, one of 

 sixteen suboval running subparallel with the lower margin from 

 the base about a third of the palar length, and another near the 

 apex and the uj)per margin, consisting of ten acute pegs. 



Species 15. C. striata auctt. (nee Linne) (Fig. 25). 



Palae, <^ , shortly cultrate. Two rows of pegs, one of fourteen 

 short, pointed pegs near the base, and one curved row of twenty- 

 one suboval pegs nearer the apex and the upper margin. 



Species 16. C. linnei Fieber (Fig. 27). 

 Palae, ^, subparallel, slightly diverging towards the apex, 

 which is subtruncate ; one row of suboval pegs, following the 

 superior margin, embracing twenty-one pegs. 



Species 17. C. sahlhergi Fieber (Fig. 26). 



Palae, c;^, much as in linyiei, but more divergent apically. 

 One row of twenty-one or twenty -two rounded pegs. 



Species 18. C. carinata Sahlberg (Fig. 28). 



Palae, ^, cultrate, curved laterally. One row of about 

 thirty-six pegs disposed as follows, starting from the base : 

 fifteen or sixteen rather blunt, somewhat cramped together ; one 

 solitary blunt peg ; five together (though farther from each other 

 than the fifteen or sixteen are mutually distant) ; twelve or thirteen 

 elongate, tapering, somewhat curved, continuing almost to the 

 apex of the pala. 



Species 19. C. germari Fieber (Fig. 29). 

 {= G. ca7'inata in Saunders, I.e., partly.) 



Palae, ^, very similar to carinata, but the form at the base 

 seems a little different, and there appear to be about forty more 

 uniform pegs. I have only one poor example, however, for 



