Genus Cystineura 
Genus CYSTINEURA, Boisduval 
“ And here and yonder a flaky butterfly 
Was doubting in the air.” 
McDonald. 
Butterfly .—Small butterflies, with elongated fore wings, the 
hind wings with the outer margin rounded, slightly crenulate. 
The head is small; the palpi are very delicate and 
thin, scantily clothed with scales. The costal 
vein of the fore wing is much swollen near the 
base. The subcostal vein of this wing sends 
forth two branches before the end of the cell. 
The upper discocellular vein is lacking; the mid¬ 
dle discocellular is short and bent inwardly; the 
lower discocellular is almost obliterated, and 
reaches the median vein at the origin of the second 
median nervule. In the hind wing the cell is open, 
and thetworadial veins springfrom thesamepoint. FlG 102 _ Neu- 
Early Stages .—Very little is as yet definitely ration of the genus 
ascertained as to these. Cystineura. 
But one species is found within the limits covered by this work. 
Seven species have been described, all of them inhabiting Central 
or South America. 
(i) Cystineura amymone, Menetries, Plate XXIV, Fig. 
7, 6 (Amymone). 
Butterfly.—The fore wings are white on the upper side, 
dusted with gray at the base, on the costa, the apex, and the 
outer margin. The hind wings are gray on the basal area, pale 
yellowish-brown on the limbal area, with a narrow fuscous mar¬ 
gin. On the under side the markings of the upper side reappear, 
the gray tints being replaced by yellow. The hind wings are 
yellowish, with a white transverse band near the base and an in¬ 
complete series of white spots on the limbal area. Expanse, 
1.50 inch. 
The early stages await description. The insect is found 
about Brownsville, Texas, and throughout Mexico and Central 
America. 
177 
