Plate 27 



i' A ^'-> ff. 



~M\n\\n{m\'yS^ ' ' B 



r.^- '■!' '-' < < ' ' ri-"r i-gi^^^afciaasi 



rv7 i/^, i ii.n ill i. 7TnuTTTpVi^^" 



n i iiinUn i iii V'^'' J^ 



Tanypus group and Chasmatonotiis 



