45 ENTOMOLOGICAL NEWS [Dec., '14 



52. Libellula incesta. 



Oklahoma: Wister, Aug. 2 (Collins), 46 $ , 69 9. All the males 

 have the extreme apex of wings dark, and 2 have a trace of color 

 about the nodus in the front wings ; otherwise the wings of all are 

 unmarked. In the females the basal streaks are best developed in the 

 front wings, sometimes being present in the front wings and wanting in 

 the hind wings ; the nodal spot similarly is best developed in the front 

 wings. While in the females there is considerable variation in any one 

 of the wing markings, there is also variation in the combination of 

 these markings, as shown by the following tabulation, which is for 

 the 69 females : 



1. No basal streaks, no nodal spot, apex dark; 11 specimens. 



2. No basal streaks, more or less distinct nodal spot, apex dark ; 4 



specimens. 



3. No basal streaks, nodal spot, area between nodus and stigma, and 



apex dark ; 5 specimens. 



4. Basal streaks, no nodal spot, apex dark; n specimens. 



5. Basal streaks, nodal spot, apex dark; 23 specimens. 



6. Basal streaks, nodal spot, area between nodus and stigma, and 



apex dark ; 12 specimens. 



7- Basal streaks carried in antenodals of second series to nodus; 

 nodus, area between nodus and stigma, and apex dark ; 3 speci- 

 mens. 



53. Libellula vibrans. 



Texas: Williams Lake, May 26, i teneral $ . 



Oklahoma: Wister, Aug. 2 (Collins), 1/5,89. Of the 17 Wister 

 males all have basal streaks, nodal spots and apex dark on all wings, 

 except that in one specimen the nodal spot is scarcely evident in the 

 hind wings. One specimen has the postnodals of all 4 wings edged 

 with color. In the females the apical brown is more extensive than 

 in the males. In one female the nodal spots are almost or quite want- 

 ing, and in 2 females there is some color on the postnodals. 



54. Libellula auripennis. 



Texas : Matagorda, May 25, i 5 ; Williams Lake, May 26, i ten- 

 eral 9 . 



55. Plathemis lydia. 



Texas: Williams Lake, May 26, 3 $, i 9 I Clifton, May 31 and 

 June i, i $, i 9. 



Oklahoma: Wister, Aug. 2, 5 and 6 (Collins), g $, 11 9 ; Henry- 

 etta (Collins), i $ , 2 9 . 



56. Orthemis ferruginea. 



Texas: Brownsville, May 15, i $, and Nov. 25, 1910 (C. A. Hart), 

 3 $,4 9 ; Black Bayou, May 17, 18, 21 and 22, 11 5,5 ? 



57. Perithemis tenera. 



Texas: Brownsville, May 13 and 15, i 5,1 9 ; Black Bayou, May 



