E. B. WILLIAMSON 
221 
third joint pale hasall}'. Rear of head light jjale yellow, iinniediate region of 
the occipital foramen largely hlack. 
Prothorax broWn; front lobe with the anterior border paler, a black spot 
on either side posteriorly; middle lobe with a very narrow hmgitudinal median 
black line; hind lobe with an anterior black spot on either side. Proi)leuron 
brown, a dusky or black spot above on the anterior border. 
Thoracic colors are light brown above and l)elow, and on the sides light 
yellow to almost white, the markings black and dark brown. 
Abdomen above brown; segment one paler and yellow apically; segments 
two to six with subapical transverse dark or black rings, which are nar- 
rowed or divided in the median line, and with the apex narrowly black ringed; 
the lower border of the dorsal brown more or less distinctly darker bordered; 
three to six narrowly pale at base ; on two to six the area between the subapi- 
cal .dark rings or areas and the apical black rings is yellow or greenish yellow, 
paler on the basal segments; seven dull yellow, the dark borders of the pre- 
ceding browm dorsa persisting on either side as an interrupted longitudinal 
black or dusk}' stripe, the subapical black ring represented by a subapical 
black si)ot on either side; eight dull yellowish brown, the subapical black 
area represented by a spot on either side about mid-length of the segment; 
nine with basal two-thirds black, a longitudinal median bar and the apex 
dull yellowish brown; ten dull yellowish brown with a little ill-defined black 
at base. Sides below yellowish green, growing darker jjosteriorly and chang- 
ing to dull yellowish brown. Ventral suture black, dull on segments eight 
to ten. 
Legs light pale yellow, unmarked; spines and tips of tarsal claws black. 
Wings clear; stigma light brown, covering one cell or slightly less. In one 
right hind wing A is a floating vein, the apical sixth wanting. In other cases 
Cui, A and the descending cross-veins are normal. 
Brazil: Espiritu Santo, one male, Coll. Carnegie Vluseum;^ 
Poco Grand, Dec. 28, 1897, one male, Cornell Coll. 
British Cuiana: Wismar, January 29, 30 and 31, 1912, six- 
teen males, two females. 
I already have described briefly the small stream between 
AVismar and Christianbiirg^ where we collected, among other 
things, the beautiful Diastatops dimidiata, the shadowy Epi- 
pleoneura lamina said fuscaenea, and the jteculiar Cyanogomphus 
conchinus. It was here also, and here alone, that we found 
Neoneura bilinearis. Just above the foot bridge over the creek 
was a fair sized pool with a few logs strewn about and, on the 
right bank, some vegetation which reached out over the water, 
a typical Neoneura habitat. Bilinearis is a slender, peculiarly 
^Calvert, Ann. Carneg. i\lus., vi, p. 212. 
®Notes on Neotropical Dragonflies: Proc. U. S. Nat. Mus., 48, p. 626, 
<May 12, 1915). 
TRANS. AM. ENT. SOC., XLIII. 
