Calvert : Odonata of the Neotropical Region. 255 



d\ Differs from all other species in having the apex of the superior 

 appendages a little produced and curved ventrad and laterad. Ab- 

 dominal segment 8 at base 3 mm. wide. 



9. Wings yellowish from base to nodus for entire (front) or almost 

 the entire (hind) width. One 9 has only one posttriangular row on 

 both hind wings for three cells, but the other two have two rows. 



Dimensions: — Abdomen J" 29.5, 9 29; hind wing cT circa 33, 



9 34-35 mm - 

 Habitat: — Brazil, Rio de Janeiro, by H. H. Smith, 1 cf, 3 9, 



some dated November. Carnegie Museum, Pittsburgh. 



198. Macrothemis marmorata Hagen. 



Macrothemis marmora/a Calvert, Proc. Bost. Soc. Nat. Hist, xxviii, pp. 318, 323, 

 pi. ii, fig. 33. 1898. 



Habitat : — Brazil, Rio Grande de Sul, by H. H. Smith, 1 d\ 

 Carnegie Museum, Pittsburgh. 



199. Macrothemis griseofrons sp. nov. 



d\ Falls under rubric A A of the synopsis of species, Biol. Centr.- 

 Amer. Neurop. p. 289, except as follows: thorax and most of the 

 abdomen pruinose, 8-10 and the appendages brown, the superior 

 appendages acute at tip. 



Frons and vertex pale bluish-g v ay, nasus and rhinarium luteous, 

 labrum orange. Hamule most prominent of the genitalia of abd. 

 seg. 2, anterior lamina more prominent than the genital lobe, entire. 

 Hind wings ochraceous in part of the anal area, beginning at the anal 

 vein and extending back 4 mm. and from the membranule distad to 

 two cells immediately bordering the anal vein, centres of the cells a 

 little paler. 



Abdomen 27.5, hind wing 30 mm. 



9 unknown. 



Habitat: — Brazil, Bom Fim in Bahia, November 20, 1907, by 



J. D. Haseman at the Fazenda de Amaratu, 1 d\ Carnegie Museum, 



Pittsburgh. 



200. Macrothemis lutea sp. nov. 



d\ Abdomen very long and slender, not widened on 7-8, luteous, 

 with the sutures, carinse, and (on 4-9) on each side of dorsum a nar- 

 row stripe, black. Thorax pale olive-green with black lines on parts 

 of the lateral sutures. Hind wings with one posttriangular row, three 



