from the Amazons &c. 615 



1883, restricted that name to another section. I did so on 

 the ground that De Selys, in Eamon de la Sagra's ' Histoire 

 de rile de Cuba ' (1857), quoted Rambur's definition of 

 the genus, and described two species under it — G. trijida, 

 Eambur, and G. septima, Ue Selys— an action which many 

 entomologists would agree with me was tantamount to fixing 

 G. trijida as the type of Gynacaniha. 



Gynacantha trijida. 



Gynacaniha trijida, Rambur, Ins. N^vr. p. 210 (1842). 



Mosqueiro, March 8, 1896. 



Previously in the Museum from the Tapajos. 



Genus ACANTHAGYNA, Kirb. 



Acanthagyna nervosa. 



Gi/nacantha ttervosa, Rambur, Ins. Nevr. p. 94 (1842). 



]\Iosqueiro, March 8, 1896. 



Four female specimens. 



A widely distributed species in Tropical America. 



Acanthagyna suhviridis. 



.^schna suhviridis, De Selys, Rev. Odon. p. 129 (1850). 

 jEschna riridis, Ilambur, Ins. Nevr. p. 200 (1842). 



Para, Jan. 4. 



Previously in the Museum collection from Pani and tlie 

 Tapajos. 



Agrionidae. 



CCENA a SIGNING. 



PSEUDOSTIGMATINA. 



Genus Mecistog ASTER, Rambur. 



Alecistog aster linearis. 



Agrion linearis, Fabr. Gen. Ins. p. 249 (1776). 



Forest, Santarem, Lower Amazons, Feb. 27, 1896 (cap- 

 tured by Mr. F. O. Pickard Cambridge). 

 A very common South-American species. 



NORMOSTIGMATINA. 



Genus C^noneura, Kirb. 



Ccenoneura sylvatica (?). 



Neoneura sylvatica (Ilageu, MS.), De Seljs, MiSm. Cour. (9) xxxviii. 

 p. 204 (1886). 



