MORGAN HEBARD 357 



comment, each specimen which had certain conspicuous features 

 of difference. The geographic race is more subtle, and, to de- 

 termine its validity, requires more thorough study and consider- 

 ation of much more material than does the species. In the Mel- 

 anopli the distinction between some species is far less striking 

 than that between others, while the weighing of all evidence which 

 can possibly be obtained is essential to determine the validity of 

 certain geographic races. 



As a result we find Morse's thorough, deliberate and conscien- 

 tious work on the Melanopli almost universally correct. Blatch- 

 ley is equally correct in considering most of the species distin- 

 guished by strikingly apparent features, but, with hardly an 

 exception, he has failed to recognize the true values of the species 

 or races wherever finesse or elaborate analysis was necessary. We 

 regret that there is need to make so drastic an assertion as 

 the above, but when we find an individual, after cursory exami- 

 nation of types and without time being given for study of the 

 series available, attempting to relegate to oblivion numerous 

 entities described by both Morse and ourselves, after years of 

 study, incurring detailed and not hit or miss consideration, we 

 feel obliged to speak. 



It is a fundamental requirement in scientific work that no man 

 synonymize or change the values of names appearing in the 

 literature, without giving definite reasons for such action. Such 

 reasons must be based on careful consideration and thorough 

 analyses of all available evidence. Blatchley has not observed 

 this requirement in his recent work. 



In the present paper twelve new species and two new geo- 

 graphic races are described. The series of these new forms 

 contain 939 specimens, of which all but 102 are in the Philadel- 

 phia Collections. 



We take the present opportunity to thank for the loan of 

 material, particularly important in determining the problems 

 surrounding Melanoplus vindipes, Mr. J. R. Malloch of the 

 Illinois State Laboratory of Natural History, Mr. Wm. T. Davis 

 of New York, Mr. W. S. Blatchley of Indianapolis, Indiana, 

 Professor A. P. Morse of Wellesley, Massachusetts, Mr. A. N. 

 Caudell of the United States National Museum and Doctor 

 Henry Fox of Macon, Georgia. 



TRANS. AM. ENT. SOC, -XLVI. 



