E. B. WILLIAMSON 
215 
h'. Abdomen with black predominating;, eighth segment 
entirely dark above paya 
h-. Abdomen with pale predominating, eighth segment with 
basal two-thirds pale above fulvicollis 
Key to the Females of Ten Species of Xeoneura 
ah Thorax with much dark color, dorsum largely dark. 
bb Abdomen, 22 mm.; j)osterior border of prothorax with lateral lobes 
greatly developed, more produced than middle lobe myrthea 
b-. Abdomen, 28 mm.; posterior border of the prothorax straighter with the 
lateral lobes not conspicuous mariana 
a-. Thorax pale, dorsum irregularly marked with darker transverse bars. 
rubriventris 
a^. Thorax largelj' light brown, dorsum with dark on either side of mid-dorsal 
Carina reduced to a narrow irregular line or a series of spots, 
bb A transverse black bar or line across the head through the lateral ocelli; 
a broad black line on the mesepimeron. 
maria and carnatica; see text on maria 
b-. Head otherwise; mesepimeron with black markings reduced and ad- 
jacent to the sutures. 
cb Hind border of prothorax trilobed, the lateral lobes each with an added 
prominence or tooth . 
db Knees black, posterior face of outer surface of femora black; l>lack 
on dorsum and sides of abdominal segment nine divided, .joana 
d^. Legs pale, posterior face of outer surface of femora scarcely dusky; ' 
black or l)rown on dorsum and sides of segment nine continuous. 
• bilinearis 
c^. Hind border of prothorax trilobed, the lateral lobes simple. 
db Lateral lobes low, scarcely evident aaroni 
d^. Lateral lobes conspicuous but not as high as middle lobe; ab- 
dominal segment nine largely dark above amelia 
d^. Lateral lobes consj)icuous, about as high as middle lobe; segment 
nine light yellow or brown above esthera 
a^. Thorax light brown, dorsum without spots or stripes? 
paya and fulvicollis (both unknown) 
Neoneura joana new species (Tigs. 1, 2, 31, 32, 75, 76 and 99.) 
Abdomen, cf 23 to 26 mm., average 24.2; 9 22 to 23: hind wing, cf 15 to 
16.5, average 15.4; 9 15.5 to 17. 
cf . — Genae bright pale blue. Labrum, rhinarium, nasus and frons in front 
bright blue; labrum with a median basal black spot; nasus with a spot on 
either side, reaching the base, and the base narrowly between these spots, black. 
Frons above and vertex liright blue, intricately patterned with black; the 
median ocellus is surrounded with black, posteriorly a branch from this runs 
back between the lateral ocelli surrounding them, except on their outer anterior 
sides, and continuing posteriorly onto the occii)ital crest, widest just behind 
the lateral ocelli; anterior from the median ocellus is a wide branch which at 
TR.\XS. .\M. ENT. .SOC., XLIII. 
