318 ENTOMOLOGICAL NEWS. [ July, 16 
it. Venational differences may be noted in the tabulation 
which closes this paper, especially the more apical position of 
the arculus and of vein A and the larger number of post- 
nodals in kennedit. 
Like ascendens (see posted under that species) the female 
of kennedii runs out to C, under B, under-A. As might be ex- 
pected the mesepisternal fossae of kennedii, corresponding to 
the shorter (lower) appendages and the less elevated tenth 
segment of the male, are placed lower on the sclerites than in 
gracile. It is possible the form of the mesostigmal lamina 
may be of value in separating the two species. As in the 
male, the female of kennedii has much more black than the 
female of gracile; for example gracile has the nasus largely 
pale and the dorsum of the head more extensively pale- 
marked, and the dark markings on both thorax and legs are 
reduced in extent as compared with kennedu; in gracile in 
some cases abdominal segment 8 in side view is largely pale, 
the black occupying the upper third of the segment for about 
two-thirds its length from the base; in those cases where the 
black is more extensive and reaches the apex of the segment 
the inferior yellowish border is fully twice as wide as it is 
ever found in kennedii; segment 9 is similarly conspicuously 
paler in gracile and even in the darkest examples the superior 
apical blue area posteriorly blends insensibly below into the 
pale inferior margin which is much wider than in kennedu 
where the posterior triangular blue spot is definitely separated 
by dark from the narrow inferior pale margin. 
Fortunately we took a large number of this difficult species, 
and this material will be so distributed as to give students 
generally an opportunity to know the species from specimens 
as well as from my description. It is to be hoped for the sake 
of convenience that definite characters, in addition to those of 
the penis, may be detected. Much of this material was col- 
lected at the small swamp at Cumuto where we took three 
species of Metaleptobasis, a new Telagrion, and many other 
things (see Notes on Neotropical Dragonflies, Proc. U. S. 
Nat. Mus., Vol. 48, 1915, p. 601). 
