N0 . 1124. REVISION OF THE MELANOPLI SC UDDER. 7 



able that the fully equipped form is here the normal, although, so far as 

 we now know, it is much less commonly found than the brachypterous 

 forms. Other instances where there is considerable but not so marked 

 nor perhaps so uniform a difference in win^-length is in Paroxya flori- 

 (lana and perhaps Hesperotettix viridis, in both which genera the length 

 of the tegmina is variable. In these two species the tegmina are not 

 apically broad in the macropterous forms, and differ only in length from 

 the brachypterous forms. 



MtttcrialKj etc. The specimens forming the basis of the present study 

 are in my own cabinet, which contains, often in large series, the greater 

 portion of the species, collected in large part by myself in different 

 sections of the country, but supplemented by specimens secured from 

 the Texan collections of Boll and Belfrage, a large series from Iowa 

 and Illinois obtained by Doctor J. A. Allen, and others from the South- 

 western States and Mexico by Edward Palmer; besides the entire col- 

 lection of Mr. P. E. Uhler, who many years ago generously turned over 

 to me his own private collection, containing among other things many 

 specimens obtained from the early explorers of the West. 



Through the favor of the Assistant Secretary of the Smithsonian 

 Institution, in charge of the United States National Museum, Doctor G. 

 Brown Goode, and the Honorary Curator of Insects in the same insti- 

 tution, Doctor C. V. Eiley, I have had the Museum's entire collection of 

 Melanopli in my hands during this study. The collections of the 

 Museum of Comparative Zoology in Cambridge, Massachusetts, have 

 also been open to me. My neighbors and colleagues, Mr. Samuel Hen- 

 shaw and Mr. A. P. Morse, have also placed all their Melanopli in my 

 hands; and from Professor Lawrence Bruner, of Lincoln, Nebraska, I 

 have received a complete series of all the forms known to him, which has 

 been on the whole the most important aid I have received. Professor 

 Jerome McNeill, who had begun a study of the Melanopli, mainly of the 

 National Museum, not only generously transferred the work to my hands, 

 but gave me free use of his notes and sent me several species otherwise 

 unknown to me. The University of Kansas sent me a series of interest- 

 ing western forms in its museum, Mr. W. S. Blatchley a series of the 

 Indiana species known to him, Professor C. P. Gillette interesting forms 

 from Colorado, and Professor H. B. Weed a few from Mississippi. All 

 of these gentlemen have freely answered many inquiries made of them, 

 and any failing in the present paper must be laid at my door. In this 

 way I have seen the types of nearly all the species described from 

 North America, and while in England Mr. Samuel Henshaw kindly 

 examined for me several of Walker's types at the British Museum. I 

 have been further aided for the European species by Hofrath Brunner 

 von Wattenwyl, Doctor Chr. Aurivillius, and Mons. A. de Bormaus. 



In all, I have examined for the purposes of this paper nearly eight 

 thousand specimens, of which about seven thousand belong to the 



