96 PROCEEDINGS OF THE ACADEMY OF [Mar.^ 



FIXATION OF SINGLE TYPE (LECTOTYPIC) SPECIMENS OF SPECIES OF 



AMERICAN ORTHOPTERA. 



DIVISION III. 

 BY ALBERT P. MORSE AND MORGAN HEBARD. 



Species of North American Orthoptera Described 

 BY Albert Pitts Morse. 



The desirability of selection and fixation of a single type has been 

 discussed and such work accomplished for a large number of species 

 of North American Orthoptera in the first paper bearing the title 

 here used by James A. G. Rehn and the present junior author.^ 

 The species of North American Orthoptera described by A. N. 

 Caudell have been treated in similar manner in the second division 

 of the series by their sponsor and the present junior author, ^ and in 

 this paper the species described from North America by the present 

 senior author, whether valid or established synonyms, are similarly 

 treated. 



It has been a rule with the senior author to consider every specimen 

 of the series originally described as a type, but the selection from 

 these of the single type by their author obviates all difficulties which 

 might otherwise have arisen. 



In the present paper, North America is used in its restricted sense, 

 only including that part of the continent north of the Mexican line, 

 as has been done in the_ other papers of the series, except in particular 

 instances in the first division, where, in order to make certain of the 

 sections complete, it was found necessary to include all of the species 

 described in papers treating of North America south to the Isthmus 

 of Panama. 



Of the sixty-five units here considered the types of fifty-two are 

 in the Morse Collection,^ ten in the Museum of Comparative 

 Zoology and one each in the American Museum of Natural History, 

 Cornell University and Hebard Collection. 



As in the previous papers of this series, the nomenclature given 



iPROC. Acad. Nat. Sci. Phila., 1912, pp. 60-128, (1912). 

 2 Proc. Acad. Nat. Sci. Phila., 1912, pp. 157-168, (1912). 

 ' Unless otherwise stated, it is understood that the types here selected are in 

 the Morse Collection. 



