Calvert : Odonata of the Neotropical Region. 257 



Superior appendages slender, convex in profile, a small inferior tooth 

 at five-sixths' length, where the tapering to the acute apex begins. 

 Inferior appendage nine-tenths as long as the superiors. Genitalia of 

 the second abdominal segment similar to those of Macrothemis mnsiv'a, 

 but the hamule still more slender. 



Legs yellow, brownish belovfr. 



9. Frons and vertex greenish, lips chiefly greenish, with some dark 

 marks ; thorax greenish-yellow, with a mid-dorsal dark brown band. 

 Vulvar lamina not quite reaching the hind margin of 8, emarginate. 



Dimensions : Abdomen c? 16.5, 9 15.5 ; hind wing cT9 20 mm. 



Habitat : — Brazil, Chapada, by H. H. Smith, 3 cJ and parts of 

 15 others; parts of 4 9, nos. 131 and 66; Rio Sapon, January 30, 

 1908, by J. D. Haseman, 1 9- Carnegie Museum, Pittsburgh. 



202. Miathyria marcella Selys. 



Miathyria marcella, Calvert, Biol. Centr.-Amer. Neurop., pp. 294, 407. 1906, 1908. 



Habitat : — Colombia, Bonda, 29. H. H. Smith. 



Brazil, Barreiras, January 4, 1908, 1 9, and Campo Largo. De- 

 cember 31, 1907, in Bahia, by J. D. Haseman. 



Chapada, 17 d\ 5 9 ; Cachoeira, 1 spmn. broken. Corumba, 

 May, 1 cT, 1 9 ; Rio Grande do Sul, 1 d\ 1 9 ; by H. H. Smith. 



All the preceding in the Carnegie Museum, Pittsburgh. 



Paraguay, Sapucay, by W. T. Foster, November, 1899, January 

 and March, 1903, 9 J 1 , 9 ?. U. S. National Museum. 



Concepcion, December 31, 1 broken spmn. 



Argentina, Goya, Rio Parana, east side, December 22, 1 d\ 3 9. 



? Fazenda de San Jose, Bananol, Grande Channel, near San Lou- 

 renso, January 8, 1 9. 



The last six specimens by H. H. Smith, Carnegie Museum, Pitts- 

 burgh. 



203. Miathyria simplex Rambur. 



Miathyria simplex Calv., Biol. Centr.-Amer. Neurop., p. 295. 1906. 



Habitat : — Brazil, Corumba, April, by H. H. Smith, 1 9. Car- 

 negie Museum, Pittsburgh. 



204. Tauriphila risi Martin. 



Tanriphila risi Martin, Boll. Mus. Zool. Torino, no. 239, p. I. 1896. 

 Ris, Hamburg. Magal. Sammelr. Odon., p. 32. 1904. 



Habitat : — ■ Brazil, Rio Grande do Sul by H. v. Ihering, 3 $ , 1 9 . 

 Academy of Natural Sciences of Philadelphia. 



