Calvert : Odonata of the Neotropical Region. 95 



surfaces of the femora and the superior surfaces of the tibiae, which re- 

 main pale blue or yellow ; some pruinosity on the prothorax, inferior 

 parts of the mesepimeron and metapleuron, and on abdominal seg- 

 ments, i, 8-10; the metallic -green mesepisternal and mesepimeral 

 stripes are faintly visible amidst the surrounding black. Pterostigma 

 almost black. 



In all the above stages, the pterostigma surmounts two cells, its 

 distal side is less oblique than the proximal ; 8-10 postnodals on the 

 front wings, 8-9 on the hind. 



Abdomen 26.5-27 ; hind wing 17-18; costal edge of stigma, front 

 wing, 1. 1 mm. 



9 unknown. 



Habitat. — Cuba : 1 J\ probably by Poey, collector's number -^ 4 -, 

 with label "L. scalaris" in de Selys' hand, the young stage above 

 described ; 1 $ by Gundlach, 1866, the older stage described, type of 

 the species. Museum of Comparative Zoology. 



Porto Rico : Mayaguez, by O. W. Barrett, January, 1 tf, oldest 

 stage described. Collection of P. P. Calvert. 



Hagen in his list of Cuban Odonata of 1867 (see ante, p. 93), 

 writes " Lestes scalaris Hagen. July and August, flying over ponds." 



21. Lestes bipupillatus sp. nov. 



(Plate I, fig. 15 ; Plate II, figs. 21, 22.) 

 d\ Metallic-green or bluish-green except the following : genae 

 below the level of the frons, rhinarium, labrum, external faces of the 

 mandibles, sides inferiorly of abdominal segments 2-7, 10 a narrow, 

 transverse, basal, mid-dorsally interrupted ring on 3-7, 10 a similar 

 apical ring on 2-4 or 6, 10 pale blue ; labium cream-colored ; nasus 

 and sterna of 3-7 black ; rear of head, prothorax, a mid-dorsal tho- 

 racic stripe about .5 mm. wide, a mesepisternal stripe slightly nar- 

 rower and immediately bordering the humeral suture, sides of thorax, 

 pectus, abdominal segments 1, 8-10, blackish and pruinose ; legs yel- 

 lowish, femora with two longitudinal lines, tibiae inferiorly and tarsi, 

 black. 



Superior appendages longer than 10, not as long as 9, black, curved 

 toward each other in their posterior halves ; in dorsal view, the inner 

 margin of each bears an acute posteriorly-directed tooth in the first 

 fourth, followed in the second fourth by a convexity, the edge of 



10 Some or all of these abdominal markings may be yellow. 



