1909.] NATURAL SCIENCES OP PHILADELPHIA. 409 



AN ORTHOPTEROLOGICAL RECONNOISSANCE OF THE SOUTHWESTERN 

 UNITED STATES. PART III: CALIFORNIA AND NEVADA. 



BY JAMES A. G. REHN AND MORGAN HEBARD. 



The first and second portions of the results of this examination 

 of the southwestern United States, treating of Arizona, New Mexico and 

 western Texas material, have already been published in these Pro- 

 ceedings. 1 The present is the final one of the series, bringing to a 

 close the study of the collections made in 1907. 



The material treated in this paper was almost wholly collected by 

 the junior author, although several small but interesting lots taken 

 by Dr. Joseph Grinnell and Mr. Fordyce Grinnell, Jr., have added 

 materially to the interest of the work. The collections made by these 

 gentlemen were very kindly given by them to the Academy. Mr. 

 Otho Poling, of Quincy, Illinois, whose assistance was acknowledged 

 in the previous papers, aided in securing a good portion of the material 

 taken in the Los Angeles region (Alamitos Bay, Miramar, Pasadena, 

 Echo Mountain and Mt. Lowe), while collections made by him in late 

 August near Los Angeles, at Altadena and on Mt. Lowe contain much 

 of interest. 



The number of species examined and treated in this report is one 

 hundred and ten, of which six species and two subspecies prove to 

 be new, while the specimens number one thousand eight hundred 

 and seventy. 



Localities. 



Indio, Riverside County, California. Altitude, 26 feet below sea- 

 level; July 29, 1907. Orthoptera were found plentiful near the 

 town on the sun-baked plain, upon which grew a high dense growth of 

 plants, and also in small irrigated spots near the railroad station. 

 The intense heat made collecting rather difficult. 



AUv itos Bay, Los Angeles County, California . July 31. Near the 

 nceai i on the loose sand, upon which typical beach vegetation 



is - ■ . r some few species of Orthoptera were found. In a few 

 ip spots in this situation several specimens of the genus 

 ere taken. 





' at. Sci. Phila., 1908, pp. 365-402; 1909, pp. 111-175. 



