302 



ENTOMOLOGICAL SOCIETY 



FIG. 6. Ischnura damula, 

 profile view of ioth abdominal 

 segment and appendages of .-7*. 

 X 24. 



FIG. 7. Ischnura barberi' 

 n. sp., profile view of icth ab~ 

 dominal segment and appen 

 dages of \ X 24. 



Ischnura barberi, n. sp. 



^.Metallic black, the following blue, green or yellowish; lips (ex 

 cept a transverse basal stripe on labrum), rhinarium, frons, gense, head 

 below, an isolated round postocular spot each side, margins of prothorax, 

 sides of meso- and metathorax (except a short superior line on first lateral 

 suture and a long one on the second), an antehumeral stripe each side 

 and a transversely oblique line each side, behind or above them, pectus, 

 feet (except a superior stripe on femora' and tibiae and extreme apex of 

 tarsal joints), i (except a basal spot on dorsum), sides and venter of 2-7, 

 all of 8 and 9, 10 (except dorsum). A transverse, basal, interrupted yel 

 low ring on 3-7. Dark band on 2 narrowed apically, that on 3-6 widened 

 on apical fourth, constricted just before it, much less constricted on 6. 



Forked elevation on 10 not much more than half as high as 10, rising 

 at a gradual slope and in a straight line from the base of the segment; 

 forked in less than its apical half; branches forming an angle of about 90. 

 Superior appendages short, rather stout, about one-half as long as 10, 

 tubercular, with a pointed, inferior, apical process, which is hardly longer 

 than the other part of the appendage. Inferior appendages nearly as long 

 as 10, yellowish except at tip, broad at base, the outer side prolonged as 

 a process the tip of which is acute and curved inwards; inner side also 

 prolonged into a broad, flattened, rounded, shorter process, thus making 

 the appendage bifid. 



Wings clear. Fore wings with eight postcubitals in first series. Nodal 

 sector arising between the third and fourth (nearer the fourth) postcubital 

 on fore wings, near third on hind wings (on left wing at the third, on 

 right wing between second and third, on this specimen). Pterostigma on 

 front wings surmounting a little less than one cell, longer than wide, 

 outer side straight; blackish, the outer corner pale; on hind wings paler. 



Abdomen 24.5, hind wing 15.5 mm. 



Hot Springs, June 24 (i cf). 



Type. No. 6891, U. S. National Museum. 



This species is very similar to Ischnura denticollis Burmeister 



