Calvert : Odonata of the Neotropical Region. 123 



/;. Mesepimeral black stripe reaching upward to or almost to 



the upper margin of the sclerite, dark colors on head 



and thorax with some metallic reflection. 



orichalcea (and a?nea). 

 bb. (not represented). 



BBB. 2. Antenodal cells 4 on both front and hind wings ; inner edge 

 of mesostigmal lamina continued caudad as a flattened 



ridge, rear of head chiefly pale iralai. 



BBB. 3. Antenodal cells more often 3 on all the wings. 



Black humeral stripe not interrupted or forked, abd. segs. 3 



and 4 chiefly violaceous botacitdo. 



Black humeral stripe interrupted, a shorter part on the upper end 

 of the humeral suture, a longer and diverging mesepimeral part, 

 3-4 chiefly black dorsally with a pale median line 



Some reclusa will fall here. (See also below.) 

 AA. Dorsum of abd. seg. 8 chiefly black, of 9 as in B or BBB, a pale mid- 

 dorsal line on 3-6. 

 A A. I. Abd. seg. 10 pale on dorsum, no mesepisternal tubercles... reclusa. 

 AA. 2. Abd. seg. 10 chiefly black on dorsum, mesepisternal tubercles 



present , translata. 



§ II. (not represented.) 



41. Argia translata Hagen. 



Calvert, Biol. Centr.-Amer. Neurop., pp. 76, 361, pi. IV, figs. 18, 30, 30 s. 

 1902, 1907. 



Colombia: Bonda, in Dept. Magdalena, July, 1 9, August, 6 rj 1 

 1 ?, September, 1^1 ?, October, 1 rf, November, 1 $. H. H. 

 Smith. Carnegie Museum, Pittsburgh. 



Three of these females (August, September, November) have the 

 nasus chiefly or wholly black, the fourth (July) has it black posteri- 

 orly ; all four have a perpendicular black line connecting the black of 

 frons and of nasus. 



42. Argia reclusa. 



(Plate IV, fig. 66.) 



Argia reclusa Selys, Bull. Acad. Belg. (2) xx, p. 395, 1865. Hagen and Calvert, 

 Bull. Mus. Comp. Zool., xxxix, p. 114, pi. 2, figs. 20^, 20b ( $ apps.), 1902. 



rj 1 . In most of the examples from Chapada and in that from Sapu- 

 cay, the black of the frons extends between the antennae broadly down 

 to the nasus ; in six specimens from Chapada and the two from Sete 

 Lagoas the black is constricted for a shorter or longer distance to a 

 perpendicular median line, but widens again at the fronto-nasal suture; 

 the longer the constriction the less black on the anterior surface of 

 the first antennal joint, which joint is entirely black in those speci- 



