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IVings. 



The relations of tlie wing-veins and cells are very obscure 

 and they have been little used in classification, except as regards 

 tlie presence of the subniarginal vein and the supernumerary 

 •cell. 



Four types are figured somewhat diagrammatically, viz., 

 Tetigoniine, 'Eupterygine. Agalliine and Asiracid. 



(i) Costal, absent or merged. 



(2) Subcostal. 



(3) Raclial=iirst sector Ficbc r=cost'd\ Signoni. 



(4) 7l/r(/m;/=second sector Ficbcr =upper radial Sigiioirf.. 



(5) C";//'/Y(//=third sector /''/r/'r/-= lower radial Sigiiorcl.. 



(6) First a;/fl/= Radiating nerves Ficbcr. 



( 7) Second anal. ' ' 



[The Claval suture (pliant suture Ficbcr) usuall\- comes here.] 



(8) A.villary, or third anal=: Claval. 



(9) .S"/(/?///(7ro///a/=:peripheric nervure Ficbcr. 

 The only cell necessary to specifv is 



(a) Supernumerary cell, often absent; it is formed by the fork- 

 ing of the radial. 



It is unnecessary to dilate on the legs. As the ])opular name 

 implies, they are saltatorial in construction, and so great is the 

 velocity of the leap in some forms {Ouconctopia and ot'her 

 Tetigoniinac) that they have gained the name of "wSharpshoot- 

 ers." 



'In the Asiracidae, one of the spines which fringe the apex of 

 the tibiae, has in each posterior pair, become greatly enlarged, 

 often enormously so, and mobile, being set with "teeth" on its 

 outer edge; this is very characteristic of all instars. Curiously 

 enough, the Asiracidae are bv no means the champion jumpers, 

 being surpassed both in length of leap and in velocity, by Teti- 

 gonioids and Fulgoroids of less leg (levelo]iment and destitute 

 of a mobile spur. 



It seems necessary to state that the "apex" or "apical mar- 

 gin" of any section, is that part of it farthest from the junction of 

 thorax and abdomen : contrariwise, the "base" or "basalmargin" 

 is the part nearest. Most authors erroneously s])cak of the 

 basal angle of the scutellum as its apex; to avoid confusion, it 

 is better to refer to it as the "posterior angle." Further, the 

 ]iart of the frons adjoining the clpeus is its apical margin and 

 the to]) of the head is (typicalh) the base of the frons and apical 

 margin of the vertex. 



