1906.] NATURAL SCIENCES OF PHILADELPHIA. 15 



of the hyaline iihiar area and the cross veins of the same canary yellow, 

 the costal section of the wing wood brown clouded with vandyke 

 brown; anal field proximad rather pale scarlet, distal section smoky 

 hyaline, between the two a very distinct and moderately broad bar 

 of hazel. Caudal limbs of the general color of the ventral surface. 



Measurements. 



& 9 



Length of body, 31.2 mm. 37.5 mm. 



Length of pronotum, 5.5 " 7.5 " 



Length of tegmen, 27 " 34.5 " 



Greatest width of tegmen, 7 " 5.1 " 



Length of caudal femur, 18.3 " 22 " 



A paratypic series of three males has been examined in addition 

 to the type. One is from Jundiah}^ (Schrottky), and the others from 

 Sao Paulo (September 14, 1900; Hempel). These specimens do not 

 differ appreciably except very slightly in color and in the slightly greater 

 size of the Jundiahy male. 



EUTRYXALIS Bruiier. 

 1900. Eutryxalis Bruner, Ace. Gen. and Spec. Locusts Argent., pp. 22, 24. 

 Included Metaleptea minor Bruner (not of Giglio-Tos) and Eutryxa- 

 lis strigata Bruner, of which the former ( = Hyalopteryx gracilis Giglio- 

 Tos) is the type. 



This genus is closely related to Hyalopteryx, but differs in the char- 

 acters given under that genus. 



Eutryxalis gracilis (Giglio-Tos). 



1S97. H[;/alopterij.r] gracilis Giglio-Tos, BoUett. Mus. Zool. ed Anat. 

 Comp. Torino, XII, No. 302, p. 22. [San Lorenzo, Jujuy, Argentina ; 

 Caiza, Bolivian Chaco.] 



1900. Eu[tryxalis] minor Bruner, Ace. Genera and Spec. Locusts Argent, 

 p. 24. (Not Metaleptea minor Giglio-Tos.) [Argentina ; common through- 

 out the provinces north of the Rio Colorado.] 



Sapucay, Paraguay. February 10-15, March 2-10, 1905. Seven 

 c^c?, ten ? ? . [Foster, Hebard Coll.] 



These specimens are quite uniform in size, and in color have the 

 browns and greens distributed in the bicolored individuals as seen in 

 Truxalis. No uniform brown specimen has been examined. 



The possession of two males and three females of this species from 

 Carcarafia, Argentina, received from Prof. Bruner and labelled Eutryxa- 

 lis minor Giglio-Tos, enabled the author to clear up a rather unfortunate 

 and complicated question of misidentification. A male and female 



