MORGAN HEBARD 355 



NEW GENERA AND SPECIES OF MELANOPLI FOUND 



WITHIN THE UNITED STATES 



(ORTHOPTERA; ACRIDIDAE) 



BY MORGAN HEBARD 



Part III 



For over five years preliminary work has now been progressing 

 in preparation of the series of the Melanopli, in the Philadelphia 

 Collections, for revisionary treatment of this group as found 

 within the United States. 



A large number of the species are found abundantly over ex- 

 tensive areas and the problem of handling series of very large 

 size has proved difficult. In order to avoid original descriptions 

 in the final work, which will in itself necessarily be very large, 

 we have, in the sorting, put aside the material representing new 

 species or races, and have followed the plan of publishing on all 

 of these in advance of the comprehensive treatment. 



The present paper is the third of the resultant publications, 

 of which our " Notes on Mexican Melanopli " J might be said to 

 be the forerunner, as indicating the general arrangement, as 

 understood by us, of the Melanopli known from that country. 

 In our first paper, 2 only species other than those of the genus 

 Melanoplus were treated. In the second, 3 a number of species of 

 Melanoplus were described. Since that time the general affinities 

 as indicated by us have required no readjustment, except that in 

 the genus Melanoplus the order throughout has been reversed. 



The present linear arrangement of the genus Melanoplus, 

 which places the majority of the macropterous species first and 

 the brachypterous species last, is used by Morse in his recent 

 most excellent treatment of the New England species. 4 The 

 reason is that brachypterism in the Melanopli indicates special- 

 ization from a macropterous and more primitive type. In the 



^roc Acad. Nat. Sci., Phila., 1917, pp. 251 to 275, (1917). 

 2 Trans, Am. Ent. Soc, xliv, pp. 141 to 169, (1918). 

 3 Trans. Am. Ent. Soc, xlv, pp. 257 to 298, (1919). 



4 Manual of the Orthoptera of New England. Proc. Boston Soc. Nat. Hist., 

 xxxv, pp. 197 to 556, (1920). 



TRANS. AM. ENT. SOC, XLVI. 



