156 PROCEEDINGS OF THE ACADEMY OF [April, 



of C. argentina, and might easily be considered only a brownish speci- 

 men of that species. However, a close examination discloses several 

 very good characters to separate the two species, such as the more 

 compressed shaft of the pronotum, the narrower supra-coxal dilation 

 and weaker cephalic limbs. All the specimens examined are of various 

 shades of brown, one male having the limbs clear green, while one male 

 and one female have the same parts touched with the same color. 



A female specimen from Rio Grande do Sul, Brazil, received from 

 Dr. Saussure and determined by him as C. gayi, is distinctly smaller 

 than Sapucay females and has the margins of the pronotum with 

 somewhat heavier spines, but does not appear separable otherwise. 

 The measurements of a Sapucay female and of the Rio Grande do Sul 

 individual are as follows : 



Sapucay. Rio Grande do Sul. 



Length of body, 80.5 mm. 62 mm. 



Length of pronotum, 25.5 " 20 " 



Greatest width of pronotum, .... 7 " 5.5 " 



Length of tegmen, 13.2 " 11.5 " 



Length of cephalic femur, 19 " 15.5 " 



Coptopteryx argentina (Burmeister). 



1864. M[antis] argentina Burmeister, Berlin Entom. Zeitsch., ^^[II, p. 208. 

 [Argentina between Buenos Ayres and Mendoza.] 



7 d", 10 $ . December, 1904; January to March, 1905. 



This series is rather uniform in size and quite so in coloration. 



PHOTINA Burmeister. 

 1838. Photina Burmeister, Handb. d. Entom., Bd. II, Abth. II, pt. I, p. 531. 

 Type. — P. vitrea Burmeister. 

 Photina brevis n. sp. 



Type: c?; Sapucay, Paraguay. March 5, 1905. (William Foster.) 

 [Hebard Collection.] 



Very closely allied to P. vitrea Burmeister, but differing in the shorter 

 pronotum and the more numerous rami of the discoidal vein of the 

 wing. 



Size medium; form moderately slender. Head broad, trigonal, 

 occipital outline moderately arcuate; ocelli large, placed in a broad 

 triangle, apex ventrad; eyes moderately projecting laterad; facial 

 scutellum strongly transverse, dorsad with a median arcuation, sinuate 

 laterad, ventrad margin slightly concave; antennae slightly exceeding 

 the head and pronotum in length, sub-moniliform. Pronotum with 

 the cephalic section moderately expanded, not constricted cephalad 



