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In 1895 Osborn announced his views on the Phylogeny of the 

 Auchenorhynchi as follows : 



"The other division (i. e. Auchenorhynchi) beginning with 

 tl'iose forms which have the most generalized condition of wing 

 \'c nation and body structure, would commence with the Cica- 

 didae and follow the ascending order which is given in the cur- 

 rent systems. It is true that the Cicadidae are themselves a 

 sj)ecialized grou]), particularly in the forms possessing musical 

 organs, but in their approach to the Psyllidae in wing venation 

 and structure of the head and thorax they seem on the whole to 

 ])resent more generalized characters than can be fotmd in any 

 of the other families of the Homoptera. 



"The Membracidae. except in extremely specializcfl ]:)ronotum, 

 are easily seen to be related 'to the Cicadidae and naturally take 

 their position next to them. The Fulgoridae, while possessing 

 specializations of the head, are in thoracic structure and vena- 

 tion more generalized than the remaining families, and while 

 possessing many highly differentiated sub-groups, may very 

 ])robably be interposed between the preceding families and the 

 Jassoid division. The Cercopidae in development of scutellum 

 and in texture of elytra, as well as in the specialization of the 

 tibiae, show characters of rather high rank, and, if placed as 

 sul>ordinate to the Jassoidea, they must at least be considered as 

 a branch of nearly equal or parallel rank. The Jassoidea, 

 separable into Bythoscopidae and Jassidae proper, may, on the 

 whole, be considered as the most highly organized of the scries, 

 and as somewhat ecjuivalent branches, the B^ythoscopidae being 

 in some respects extremely specialized, while the Jassidae are 

 subdivided into nearly equal branches, Jassinae and Tettigoni- 

 nae." 



(b) SYSTEM ADOPTED. 



The following is the classification I adopt here for the Auche- 

 norhynchi, showing also their position with regard to other He- 

 niiptera, proceeding from the more primitive to the more spe- 

 cialized. 



Group \— AUCHENORHYNCHI Amyot & Serville. 



Super-family i—CICADOIDhA. 



Family I— CICADIDAE. 



Super-family 2—TE TIGONIOJDEA . 



Famay J— TETIGONIIDAE (=super-family Jassoidea, Van Duzee.) 



