82 PROCEEDINGS OF THE ACADEMY OF [March, 



DESCKIPTIONS AND RECORDS OF SOUTH AMERICAN ORTHOPTERA, WITH 

 THE DESCRIPTION OF A NEW SUBSPECIES FROM CLARION ISLAND. 



BY JAMES A. G. REHN. 



In the following pages are contained the descriptions of one new 

 genus, nine new species and one new subspecies, from locahties 

 extending from Panama and Surinam south to southern Brazil and 

 from Clarion Island in the Pacific Ocean, off Lower California. 

 Much information concerning the variation of certain species and 

 data on the range of others, accumulated from a number of sources, 

 is here presented for the first time. 



By far the greater part of the material here treated is contained 

 in the Hebard Collection, all of the new species being from that 

 series, while a number of interesting forms are from the collection 

 of the United States National Museum. My thanks are due to Mr. 

 Hebard and the authorities of the National Museum for the privilege 

 of studying the material. 



ACRYDIIX.E (Tdliginop Auct.). 



EOMORPHOPUS Hancock. 



1906. Eotnorphopus Hancock, Tetriginse; Genera Insectorum, pp. 31 and 

 37. 



Tj'pe as specified, Amorphopus antemiatiis Bolivar. 



Eomorphopus granulatus Hancock. 



1906. Eomophopus granulatus Hancock, Tetriginse; Genera Insectorum, 

 p. 38, pi. 4, fig.s. 3o-3.5a. [Dutch Guiana.l 



Surinam. [Hebard Coll.] One 9 . 



EUMASTACIN.^. 



PARAMASTAX Burr. 

 Paramastax nigra (Scudder). 



187.5. Mastax nigra Scudder, Proc. Boston Soc. Xat. Hist., XVII, p. 266. 

 [Eastern slope of the Peruvian Andes.] 



Yungas de la Paz, Bolivia, 1,000 meters elevation. [Hebard 

 CoU.] One cf . 



This specimen is considerably smaller than the measurements 

 given by Scudder and appreciably smaller than those given by Burr,^ 

 but otherwise it is typical of 7iigra. The difference in size may be 



1 Anal. Soc. Espan. Hist. Nat., XXVIII, p. 270. 



