1897.] THE SPECIES OF THE GENUS MELANOPLUS. 5 



gested, as far as is possible, not to duplicate the liolding of 

 official positions. Unanimously adopted. 



The death of the followino- members was announced : 



Dr. Theodore G. Wormley, of Philadelphia, on January 3, 

 1897, ^t. 71 years. 



Dr. William Henry Pancoast, of Philadelphia, on January 

 0, 1897, ^t. 61 years. 



The Society was then adjourned by the presiding officer. 



THE SPECIES OF THE GENUS MELANOPLUS. 



BY SAMUEL H. SCUDDER. 



{Read January 15, 1S97.) 



In a memoir to be published by the United States National 

 Museum I have described in detail all the species of Melanoplus 

 known to me, whether new or old. As, however, some delay has 

 occurred in the printing of that paper, I am permitted to give here 

 a table for the determination of all the species and their distribution 

 into series, following it with such portion of the synonymy (given 

 in detail in the memoir referred to) as will enable one to understand 

 the latest determinations made after careful study with abundant 

 material. 



The genus, it should be said, is characteristically American, and 

 is widely disseminated. Some confusion has resulted in former 

 times by not recognizing the dimorphism which occurs in this and 

 the allied genera in the length of the organs of flight, a subject dis- 

 cussed at some length in my detailed memoir, where also will be 

 found remarks on their geographical distribution. 



Although the prime division in the table separates the macrop- 

 terous and brachyterous species, the same series and sometimes the 

 same species may appear under both divisions, and the final 

 arrangement of series following the table is independent of this dis- 

 tinction. 



I have given the name of furcula to the processes of the last dorsal 

 segment of the male abdomen. ' 



