322 PROCEEDINGS OF THE ACADEMY OF [May,. 



author credited the species to Chile (apparently after Blanchard and 

 in reference to true signatipennis) and Uruguay. 



Subfamily (EDIPODINiE. 



Trimerotropis pallidipennis (Burmeister). 



1838. 0[edipoda] pallidipennis Burmeister, Handb. der Entom., II, Abth. 

 II, pt. 1, p. 641. [Zimapan, Hidalgo, Mexico.] 



Alto Pencosa, Prov. of San Luis. Elev. 660 meters. November 

 21-22, 1908. Four males. 



La Paz, Mendoza. Elev. 504 meters. November 15, 1908. One 

 female. 



Pedregal, Prov. of Mendoza. Elev. 696 meters, November 23, 

 1906; December 16 and 30, 1906. One male, two females. 



Mendoza, Prov. of Mendoza. Elev. 767 meters. February 23, 

 1908; March 13 and 27, 1908; April 2-24, 1908; May 2-31, 1908; 

 June 5-12, 1907-1908; July 27, 1907; September 27, 1908; October 



26, 1908; November 12 and 29, 1907; December 2 and 10, 1907. 

 Nineteen males, nineteen females. 



Chacras de Coria, Prov. of Mendoza. Elev. 936 meters. January 

 7-22, 1907-1908; February 9-24, 1907; March 27, 1907; April 4-24, 

 1907, 1908 and 1909; May 25, 1907; November 2, 1906. Eight 

 males, nine females. 



Potrerillos, Prov. of Mendoza. Elev. 1,368 meters. December 



27, 1908. One female. 



Cordillera de Mendoza. March 20, 1908; November 21, 1906. 

 Three males, one female. 



This extensive series shows that the species varies tremendously 

 in size and color, in these respects being parallelled by similar variation 

 in the closely allied, if at all distinct, North American T. vinculata. 

 The same variations in general size, color tone, width, intensity, 

 solidarity, and curve of tegminal bands, intensity and width of wing 

 band, tone of wing disk and colors of ventral sulcus of caudal femora 

 are noted as in vinculata. 



The rugosity of the metazonal disk varies individually in both 

 sexes, while the caudal angle of the pronotum shows variants ranging 

 from slightly obtuse to slightly acute, the majority having it rect- 

 angulate. 



The species has a very considerable range, having been recorded 

 from north-central Mexico south to at least as far as the provinces 

 of Santa Fe, Cordoba, San Luis, and Mendoza, Argentina. 



