COLLA. By Dr. W. Sohaus. 
679 
point on inner margin; a broad postmedial fascia; broad subterminal and terminal lines. Hindwing; a post- 
medial line from costa to inner margin; a short line at inner margin above anal angle. Expanse: 40 mm. Surinam. 
It is possible that this species is the same as rhodope, but for the present I prefer to keep them separate as I have 
seen no specimens agreeing with Stoll’s figure. 
C. glaucescens Wkr. (= margaritacea Mschlr., blandiatrix Fldr.) (89 b). Male: More intensely marked glaucescens. 
than rhodope, the termen of forewing more oblique, the hindwing longer on inner margin. Female: The markings 
greyish olive, forming a large antemedial patch at costa and thick double lines below cell; postmedial fascia 
broad the lines largely suffusing, tinged with cinnamon buff on inner margin; the broad marginal line usually 
interrupted at vein 5; terminal line broad. Hindwing: a double or a single line not reaching costa tinged with 
cinnamon at inner margin; a subterminal macular line and sometimes a broken marginal line. Wings below 
with the markings showing in transparency. Expanse: Male 39 mm; female 50 -65 mm. Guatemala; Costa 
Rica; Colombia; Rio de Janeiro, Brazil. 
C. gaudialis Sells. (89 b). Male: Head and thorax white. Abdomen lilacine brown above, white below; gaudialis. 
anal hairs brown. Forewing: basal two-thirds brownish white; the costal margin olivaceous, extending into 
cell antemedially, interrupted medially by a buff shade, also buff at apex; a silvery white streak on discocellular; 
a faint ochreous medial shade on inner margin; ochreous shades on veins beyond cell; a silvery white line from 
costa at three-fourths from base curved to vein 4, and preceded by a broad greyish shade and silvery points 
on veins, also preceded by grey on inner margin; the outer margin white with a subterminal and a marginal 
grey shade. Hindwing thinly scaled, white, a dark medial spot on inner margin; reddish-brown shades subter- 
minally at and near inner margin. The cilia ochreous red at anal angle. Expanse: 29 mm. St. Jean, Maroni 
River, French Guiana. 
C. coelestis Schs. (89 b). Male: Legs white shaded with brown. Palpi brown. Head and thorax white; coeJestis. 
some brown on frons. Abdomen olivaceous brown above, laterally and underneath white. Wings white 
opalescent. Forewing: some antemedial and postmedial ochreous spots on costa; a broad subterminal space 
from vein 4 to costa broken by the veins and divided by a fine white line; a single subterminal spot between 
veins 2 and 3, these spots are apparently grey but also opalescent in the proper light; a marginal grey shade, 
not opalescent, cut by the veins, a terminal white line; cilia white outwardly, grey basally. Hindwing: some 
olivaceous-brown spots on inner margin, a grey spot above anal angle, and some marginal grey spots between 
angle and vein 4. Female: Wings dirty white. Forewing: a basal space, and two antemedial smoky shades, 
slightly curved; a geminate postmedial shade curved from costa to vein 4, partly coalescing, followed by a 
broader similar shade, interrupted between veins 3 and 4. Hindwing as in the male. Expanse: Male 27 mm; 
female 34 mm. Sixola River, Costa Rica. 
C. lilacina Dogn. (89 b). Female: Head and collar white. Thorax vinaceous buff. Abdomen vinaceous lUacina. 
buff above and below, laterally white. Fore wing thinly scaled, light brownish drab; costal edge white; termen 
pale ecru drab beyond a fine outer army brown line, lunular from costa to vein 6, outbent to vein 4, inbent 
along vein 4, excurved and outbent to vein 3, downbent to vein 2 and slightly inbent below; in places a 
fine white line precedes this brown line, this latter broader at costa; inner margin light buff; traces of subbasal, 
antemedial, and medial outcurved lines which are well defined on inner margin; a white spot on discocellular. 
Hindwing white suffused with pinkish buff on disc to postmedial line and inner margin; from beyond base to 
postmedial the inner margin is cinnamon brown cut by white lines; postmedial line very faint; a terminal pale 
smoke-grey shade. Forewing below paler, iridescent, the pattern of upperside visible in transparency. Hindwing 
below cream colour, the postmedial line with an army-brown spot near inner margin. Expanse: 33 mm. 
French Guiana. 
C. micacea Wlcr. ( — albescens Schs.). Male: White. The abdomen above reddish brown. Forewing: micacca. 
the costa finely light brown; a grey spot on inner margin near base; a small grey spot between veins 2 and 3; 
an interrupted grey postmedial shade; an interrupted subterminal grey line below vein 4; a marginal grey shade 
between veins 2 and 7; a terminal fine ochreous line; cilia grey between 2 and 7. Hindwing: inner margin 
spotted with olivaceous brown; a grey subterminal spot near inner margin; some faint grey marginal spots. 
Expanse: 22 mm. St. Jean, Maroni River, French Guiana. 
C. opalifera Dogn. (= manni Schs.) (89 b). Male: Body white: a dark greyish olive spot at base of opalifera. 
abdomen dorsally; anal segment cinnamon. Wings white, thinly scaled. Forewing: a line of silver scales on 
submedian fold, on discocellular, and on vein 5, not reaching termen, and interrupted by a postmedial square 
dark greyish olive spot with some black on the vein; costal edge light buff; double greyish olive postmedial 
marks on costa, the spot on vein 5 sometimes divided; subterminal dark greyish spots, and a broken marginal 
line. Hindwing: medial and postmedial dark spots on inner margin, and marginal greyish spots from below 
vein 4 to anal angle. Female: Similar to male. Expanse: Male 24 mm; female 30 mm. French Guiana; 
Upper Amazons. 
