42 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
evagination from the posterior side of the bursa copulatrix. The 
ornamentation of the inner wall of the bursa copulatrix differs, being 
composed of fine spines in zcogramma and fine ridges in turbula. 
Trazona ademonia, new species 
FIGURE 22; PLATE 4 (FIa. 4) 
Alar expanse 16 mm. 
Labial palpus white; second segment tinged ochraceous buff on 
outer side; third segment gray apically. Antenna grayish fuscous; 
scape grayish buff basally, white apically. Head white with some — 
grayish scales posterolaterally. Thorax grayish fuscous, paler pos- 
teriorly; tegula pale grayish posteriorly. Forewing ground color | 
white; dorsum broadly marked leaden gray and white mixed; basal 
patch, from basal fifth of costa to dorsum, grayish-fuscous; on dorsum, 
before tornus, a ring of fuscous scales surrounding a leaden-gray area; 
on costa, at middle, a pale leaden-gray spot edged posteriorly and 
anteriorly with buff; between dorsal and costal spots several pale 
gray spots and short dashes mixed with buff; subapically, from costa 
to vein 4, a curved, pale leaden-gray transverse fascia edged with 
buff; apex narrowly grayish fuscous; costal scales elongate beyond 
basal patch and beyond midcostal spot; underside moderately infus- 
cated; cilia mixed gray and white. Hindwing grayish fuscous; cilia 
very pale gray with darker subbasal line. Foreleg ocherous white, 
suffused fuscous on outer side; midleg ocherous white with slight 
fuscous suffusion on outer side of tibia; hindleg ocherous white. 
Abdomen gray; ventrally first three segments paler. 
Female genitalia slide JFGC no. 11640. Ostium very broad; anterior 
edge concave. Antrum broadly sclerotized. Inception of ductus semi- 
nalis from center of bursa copulatrix ventrally. Ductus bursae lightly 
sclerotized except for narrow membranous area anterior to antrum. 
Bursa copulatrix ornamented with fine spines and with a strongly 
sclerotized bulge dorsoanteriorly on right side. Accessory bursa not 
extending beyond anterior end of bursa copulatrix. 
Holotype: U.S. National Museum No. 69752. 
Type-locality: Costa Rica, La Florida, 500 feet. 
Distribution: Known only from the type-locality. 
Described from the female holotype (William Schaus). 
This species is very near turbula but the latter lacks the subtornal 
dorsal ring, and the subapical fascia is much longer in ademonia than 
in turbula; the forewing of ademonia is broader than that of turbula. 
Further differences may be seen in the genitalia, particularly in 
the position of the sclerotized swelling, or evagination, from the 
bursa copulatrix. The characters of the ductus bursae are widely 
different, also, as may be seen by a comparison of the figures. 
