348 



ENTOMOLOGICAL NEWS 



[Nov., 'l8 



bard, but there are two specimens in the lot which are interest- 

 ing as representing a long-winged or caudate phase of this 

 species. 



Both of these specimens are females. One is shown herewith in the 

 accompanying figure. With this should be compared the view of a typi- 

 cal, short-winged individual as shown in Figure i, plate XII, of Rehn 

 and Hebard's paper already cited. It wall be observed that, in marked 

 contrast to the latter, the form figured here has the tegmina quite well 

 developed and external in position, whereas in the typical form they 

 are greatly reduced and concealed from view beneath the pronotum. 

 Correlated with the presence of well-developed tegmina is the presence 



Neotettix proavus R. and H., long-wiiiged phase. 



of a clearly defined superior sinus on the caudal margin of the lateral 

 lobe of the pronotum. This margin is therefore clearly .bisinuate in 

 the long- winged phase. In the typical phase the superior sinus is so 

 inconspicuous that Rehn and Hebard have ventured to describe this 

 margin as unisinuate. Other dift'erences between the two phases — 

 such as those in the degree of development of the wings and in the 

 caudal extension of the pronotum — are evident from a glance at the 

 figures. 



It is obvious that the discovery of this long-winged phase 

 of Neotettix proarus necessitates some modification in the 

 statement of the dififerential characters of the species as given 

 by Rehn and Hebard in their key to the species of this genus 

 (op. cited, p. 131^) . Thus, as already intimated, the assertion 

 therein that tlie lateral lobes of the pronotiun have the caudal 

 margin unisinuate applies strictly only to the typical form ; 



