214 
GENUS NEONEURA (oDONATA) 
g^. Mesepinieron witli a distinct l)lack stripe, pale colors of 
thorax blue or slaty ethela 
f“. Not as above. 
gb Pale colors of thorax blue or slaty; abdomen about 26 
mm ethela 
g-. Pale colors of thorax rod or reddish. 
hb Abtlomen about 30 mm mariana 
h-. Abdomen about 24 mm myrthea 
e-. Thorax with black area adjoining mid-dorsal carina wanting, re- 
duced to a series of si)ots, or not one-third the width of the mes- 
episternum. 
fb Dorsum of thorax with irregular, transverse brown lines or 
bars, other thoracic markings reduced to irregular spots; ab- 
domen almost entirely red rubriventris 
f“. Thorax not as above. 
gb Thorax with a series of spots or a narrow stripe or bar along 
the mid-dorsal carina. 
hb Abdomen predominantly pale. 
ib Abdomen clear blue with some yellowish and reduced 
black rufithorax^ 
i-. Not as above. 
jb Abdomen largely red, dorsum of eighth and ninth 
segments largely pale esthera 
'f. Abdomen dull, pale; dorsum of eighth and ninth 
segments black aaroni (juv.) 
h-. Abdomen predominantly lilack. 
ib Al)dominal segment two pale above, bordered and pat- 
terned with black. 
jb Dorsum of head with a fairly straight, transverse bar 
of black through the lateral ocelli from eye to ejm; 
metepimeron pale. 
kb Colors red and black; abdominal segment nine 
largely dark above carnatica 
k^. Colors blue and black; segment nine largely blue 
above maria 
j^. Dorsum of head with a conspicuous, more or less 
quadrangular, l)lack area posterior to and including the 
lateral ocelli, and continuous wdth the extreme poste- 
rior black margin of the head as seen in dorsal view 
(sometimes this quadrangular black area with j^ale 
spots in it); metei)imeron with traces of dark to 
entirely black amelia 
i^. Segment twm entirely dark above aaroni (adult) 
g“. Mid-dorsal thoracic dark markings (except sometimes near 
the ante-alar sinus) and mesepimeral median dark stripe 
w'anting. 
^Known to me only from de Selys’ description. 
