JAMES A. G. REHN 



215 



THE STANFORD EXPEDITION TO BRAZIL, iq/^J^^^"'^" "^^'V^: 



J. C. BRANNER, DIRECTOR I ' nPT'-i iQlfi «»^' 



DERMAPTERA AND ORTHOPTERA I 



4^. 



BY JAMES A. G. REHN 



V'onEi\ Mus^^ 



The very interesting and diversified collection of Dcrmaptera 

 and Orthoptera made by the Stanford Expedition to Brazil was 

 placed in my hands for study several years ago, but numerous 

 other matters prevented an earlier completion of the report. 

 We are now able to place in print the results of the study of the 

 Dermaptera, the non-saltatorial groups of the Orthoptera and 

 the Acrididae, which contributions we expect to follow, as early 

 as possible, with others on the Tettigoniidae and Gryllidae. 



A considerable portion of the material had been collected in 

 liquid preservative, from which it was mounted, and in conse- 

 quence the colors have been very greatly altered in some individ- 

 uals, while in others the shrivelling during drying has greatly 

 altered and distorted certain structural features. Due allowance 

 has been made for possible changes in all of the material which 

 shows evidence of having been dried from liquid preservative. 



Three well separated regions are represented by the material: 

 the extreme north-eastern portion of Brazil, which previously 

 has been almost unexplored entomologically; the vicinity of 

 Para, State of Para, and localities along the line of the Madeira- 

 Mamore Railroad on the Madeira affluent of the Amazon. A few 

 specimens were also collected at Manaos, on the lower Rio 

 Negro, State of Amazonas. For further data than here given 

 on the position of localities mentioned, see Baker's paper on the 

 mollusca of the Expedition.^ 



To make the present work more? complete we have added rec- 

 ords of a number of species taken at Para, by C. F. Baker; at 

 Peixe Boi, a short distance east of Para, taken by H. B. Merrill, 

 and at Igarape de Candelaria, Rio Madeira, by E. A. Smith; 

 the material on which all of the same are based being contained in 



1 Proc. Acad. Nat. Sci. Phila., 1913, pp, 623 to 624, (1914). 



TRANS. AM. ENT. SOC, XLII. 



