HANCOCK 



31 



subcosta, media, and radius so that they have completely 

 fused in the middle, subcosta being free for a little distance 

 at its base, the media being free at its apex, its distal two- 

 fifths. 



This narrowing has also resulted in the suppression of the 

 cubitus to a much greater extent than in any other orthop- 

 tera at present examined. Whether the radial sector is lost 



Fig. 10. Hind wing of Tettix gibbosits. Cnstal trachea wanting; its place 

 taken by Icmg anterior branch of subcosta from base. 



or is fused with the distal end of the media is not j'et clear. 

 In the wing apex of Tettix gibbosits, as shown in figure,* the 

 subcostal, radial, and medial tracheae take the courses to the 

 wing margin, showing clearly how the tips of the correspond- 



cg^iB. 





Fig. II. Elytra or forewing of Paratettix ciicullatiis, showing three 

 trachese designated at the basal portion as I, 2, and 3. Some 

 pores are shown. 



ing veins may be designated. In this region of the wing 

 Tettix gibbosus is somewhat more reduced in venation. In 

 Tettigidea parvipennis pcnnata the media is free at the apex 



* For drawings and valuable suggestions on venation of the wings tlie autiior is indebted 

 to Dr. J. G. Needham. 



