PSYCHE. 



NOTES ON THE ACRIDIDAE OF NEW ENGLAND.— I. 



BY ALBERT P. M()RSE, WELLESLEY, MASS. 



The purpose of these notes on litera- 

 ture, niorphology, habits, etc., is to add 

 to the available knowledge of the 

 species of locusts occurring in New 

 England and enable others to more 

 readil}' become acquainted with them. 

 To this end the notes are accompanied 

 by sketches illustrating many of the 

 more important diagnostic characters, 

 and keys for determining the species, 

 which, it is hoped, will' enable, so far as 

 it is possible, even the novice to identify 

 any specimen in hand. 



The order of sequence of the various 

 groups, if circumstances permit, will be 

 that adopted by Biunner in his recent 

 Revision. 



Part I. Tettigixae. 



Of this subfamily I have over nine 

 hundred New England specimens in 

 mv collection, forming the basis of this 



paper. To Mr. S. H. Scudder I am 

 indebted for opportunity to examine 

 other North American and several 

 European species, and the types of the 

 New England forms described by him. 



In the bibliography references are 

 given to the original descriptions and 

 the more important and accessible 

 literature only, with a view to clearly 

 indicating the species to which refer- 

 ence is made. Unless otherwise 

 statetl I have accepted Scudder's deter- 

 minations of the species described by 

 Harris, Say, and Burmeister, as indi- 

 cated in his "Materials." For the sake 

 of brevity a list of woiks is given and 

 reference is made in most cases to 

 author and page only. 



Under the head of measurements the 

 extremes alone are given. "Total 

 length" refers to the length of the insect 

 from the front of the vertex or head to 



EXPLANATION OF PLATE 6. 



Fig. 2. Tcttix ornatKS and triangitUiris, pronotum 

 and wings from above, — combination figure to show 

 The drawings are numbered in accordance with outlines of both forms. 



the species. 



Fig. I. Nomotcttix cristatus, side view of prono- 

 tum. 



Fig. irt. Nomotcttix cristnttis, var. carinatiis, side 

 view of pronotum. 



Fig. i^. Xomott'ttfx cristatits, section, 

 ic. " " profile. 



id. " " head from above. 



Fig. 2a. Tt'ttix orttatns, side view to show sinuses 

 of lateral lobes. 



Fig. zK Tcttix ornatits, head from above. 

 2f. " " profile. 



" 3. " granulattts, head from above. 



" yi. " " profile. 



4. Paratcttix citcidlatus, head from above. 

 \a. " " profile. 



5. Tcttii^idca lateralis, head from above. 



