THE CANADIAN ENTOMOLOGIST 357 



Enallagma hageni, same, dorsal view. 

 Enallagma hageni, lateral gill. 

 Enallagma geminatum, lateral gill. 

 Coenagrion resolutam, lateral gill. 

 Ischnnra cervula, lateral gill. 

 Ischnura verticalis, lateral gill. 

 (To be continued) 



NEW SOUTH AMERICAN MEMBRACID^.* 



BY W. D. FUNKHOUSER, ITHACA, N. Y. 



Subfamily MEMBRACINM. 

 1. Tropidoscyta brunneidorsata, sp. nov. (PI. XXIV, fig. 1). 



Near T. pazcila Germ., but differing in size, colour and in the 

 shape and sculpture of the pronotum. A series of eleven speci- 

 mens of this species from Peru and one specimen from Bolivia 

 shows practically no variation and no tendency to gradate towards 

 T. pcecila, to which it seems most nearly related. 



Uniform dark chocolate brown, almost black, except the region 

 between the first two lateral ridges, which is bright yellow brown, 

 showing a characteristic light longitudinal band down the median 

 line when viewed from the dorsal aspect. Obtriangular, humeral 

 angles prominent and round, posterior process long and gradually 

 acuminate. Head twice as long as wide; cheeks not extending 

 beyond internal margin of eyes; eyes dull yellow, mottled with 

 brown; ocelli farther from each other than from the eyes; black 

 spot above each ocellus; face covered with fine, short, golden hairs. 

 Pronotum high and projecting well forward anteriorly; transverse 

 black mark on each side in front; sharp median keel extending 

 from margin of head to tip of posterior process; two distinct ridges 

 on each side, the first beginning close to the median line at the 

 anterior apex of the pronotum, gradually extending away from the 

 line, and ending at the lateral margin half way between the hum- 

 eral angle and the posterior tip, the second extending as a semi- 

 circular ridge just over the humeral angles, not reaching the lateral 

 margin; dorsal and lateral margins of the pronotum almost straight, 



*Contribution from the Entomological Laboratory of Cornell University. 

 October, 1914 



