212 entomological nev/s. [November, 



to the water and floating vegetation, that I was able to catch 

 them only by dropping the net over each individual, sinking it 

 below the water and withdrawing the insect with my fingers 

 while it was still immersed. 



On my return to Philadelphia, Mr. Williamson's paper on the 

 Dragonflies of Round and Shriner Lakes was awaiting me. The 

 brief footnote on an " Enallagma sp. (?)", which he has quoted, 

 seemed to apply to my orange Ischnura females. As the result 

 of some correspondence to which this idea led, Mr. Williamson 

 kindly consented to my request to send a description of the 

 species, based on material more lately obtained by him, for 

 publication in the News, with the understanding that I should 

 supplement his paper with any additional notes which my New 

 Jersey specimens might suggest. These notes follow : 



(j\ — The two round blue spots on the median prothoracic lobe are 

 absent in five of the six males. There is no apical blue spot on 7 in one 

 male, while in four others it is represented by a pair of small, isolated 

 spots. There are no basal spots on 10 in five males. One individual, 

 apparently fully colored otherwise, has the pterostigma on all the wings 

 pale brown. Abd. 19 mm., hind wing 13-12. 5 mm. 



Black 9. — The blue postocular spots are prolonged backwards and 

 downwards on the rear of the head. The two round blue spots on the 

 median prothoracic lobe are very small in one female, while the geminate 

 spot on the same lobe is wanting in two females. There is no apical spot 

 or ring on 7, nor spots on the sides of 3-5. Some variations in the mark- 

 ings of 2 and of 8- and 9 are shown in PI. XI, figs. 10-13, Dut a great 

 extent of black on 2 is not correlated with much or little black on S and 

 9, and vice versa. Abd. 18.5-19, h. w. 13.5. 



Orange 9- — Like the black female but with orange replacing the blue. 

 No geminate spot on the median prothoracic lobe. Very little dark color 

 on the pectus. The black markings on 2 show the same variations as in 

 the black 9 ; on 8 and 9 they are similar but of less extent, especially on 

 9, although this may perhaps be due to immaturity. Abd. 18.5-20, h. w. 



I3-H- 



rj 1 ?. — Front wings : postnodals 7-8 (cJ 1 ), 8-9 (9) nodal sector arising 

 between the third and fourth or near the fourth. Hind wings : 5-7 post- 

 nodals, nodal sector arising at the third or a little in front thereof. 



From the two previously known Eastern species of Ischnura, 

 verticaiis Say and Ramburii Selys, Kellicotti differs : 



In both sexes by the greater extent of black on the rear of the 

 head, by the wider black stripe on the second lateral thoracic 

 suture, by the extent of the black markings on 8 and 9. 



