230 
GENUS NEONEURA (oDONATA) 
at the apex which in each case is light reddish Iwown. Sides of two to eight, 
below the dark l)order of the dorsal color described above, with a longitudinal 
band of dull 3 ’ellow, becoming reddish j-ellow on the posterior segments; be- 
low this 3 'ellow band on each segment is a parallel longitudinal band of black, 
about the same width as the pale band above it except on eight where it is not 
half as wide; below this black band the extreme lower edge of each segment 
(two to eight) is pale, light j-ellowish on the anterior segments, darker and red- 
dish on the posterior segments; sides of nine largelj' black, reddish yellow 
apicalty; ten black at base, apical half or two-thirds reddish j'ellow. Ventral 
suture black. 
Legs black, femora light graj' inside, tibiae light yellowish outside. 
Wings clear; stigma light brown, covering nearly" one cell. 
British Guiana: Wismar, January 31, 1912; Tumatuniari, 
February 8 and 11, 1912: a total of fourteen males, one female. 
Named for Miss Myrth Shafer; see remarks under mariana. 
Type . — cf ; 9, allotype; Wismar, January 31, 1912; in the 
writer’s collection. 
This species is most closely related to mariana which it very 
much resembles in color; see remarks under mariana. 
Under hilinearis I have briefly described a small stream between 
Wismar and Christianburg where we took a number of interest- 
ing dragonflies. One of these was this brilliant and beautiful 
species. At low water stage the first stream above Tumatumari 
on the same side of the river is a small, slow, mud-bottomed wood- 
land stream known as Cashew Creek. On the opposite side, the 
left bank of the river, there is a similar stream just below Tuma- 
tumari Falls. At these two streams also we found myrthea. 
Xeoneura rubriventris Selys (Figs. 13, 14, 48, 49, 50, 51, 86 and 103.) 
Specimens from British Guiana agree fairly well with de Selys’ 
description, and their identity with ruhriventris is established by 
the figures of the appendages received from M. Menger. How- 
ever, a male from Para, Brazil, collected by Professor C. F. 
Baker and given me several years ago, shows remarkable differ- 
ences in the color patterns of the head and thorax (compare 
fig. 13 and fig. 14). Both Mr. Kennedy and I have studied 
this specimen and independently, he studying penes, and I ap- 
pendages and characters in general, we have concluded that the 
specimens from British Guiana and Para are specifically iden- 
tical. 
Abdomen, cf 29 to 30 mm.: hind wing, cf 20 to 21. 
cf . — Genae dull brown, similar to labrum. Labrum, rhinarium, nasus and 
frons in front, dull reddish brown, the last paler; labrum with lower margin 
