6 HETEROCERA. 
4. Cosmopteryx xanthura, sp. n. 
Antennae whitish beneath, barred with black above, the bars connected by a slender black line to two-thirds ; 
broadly banded with white at two-thirds, then again equally widely ‘banded with black, the three or 
four terminal joints again white. Palpi very slender, terminal joint twice median ; white, with slender 
length-lines on either side. Head brownish fuscous, iridescent on the crown; face shining, yellowish 
white. Thorax dark brownish fuscous, a slender steely metallic line dividing it posteriorly. Forewings 
dark brownish fuscous to their middle, a slender shining steel-grey line along the costa from the base, 
with three similar shorter lines below it, removed from the base; at about the wing-middle are two 
spots of pale golden raised scales, almost connected and forming an outwardly oblique fascia from costa 
to dorsum, there is a black dot on the outer edge of the costal spot; these spots encroach upon a broad 
bright ochreous yellow band, which sends a slender curved streak of the same colour to the apex and 
through the apical cilia, bounded on either side by dark brownish fuscous, but more widely and con- 
spicuously above than heneath ; before the brown colouring is another pair of raised golden spots, placed 
obliquely in reverse direction from the previous pair, a few light ochreous scales succeeding the upper 
one in the costal cilia ; cilia shining, brownish grey. yp. al. 8-85 mm. Hindwings blue-grey at the 
base, becoming brownish grey toward the apex; cilia brownish grey. Abdomen brownish fuscous, 
illuminated at the side with steel-grey ; underside silvery white. Legs brownish fuscous, with silvery 
white bands around the base of the spurs, the tibiae between them being bristly with black hairs above; 
spurs and ends of hind tarsi silvery white. 
Type & (65987) Mus. Wlsm. (Godm-Salv. Coll.). [PT7. (65988) US. Nat. Mus.] 
Hab. Mexico: taspasco: Teapa, III. (H. H. Smith). Four specimens. 
Undistinguishable from sanctivincenti Wlsm., except in the white end to the 
antennae and the broad white band before the subterminal dark band. 
5. Cosmopteryx diaphora, sp. n. 
Antennae brown above, whitish beneath, with about four pale straw terminal joints, these preceded by three 
brown joints, after one brown, between two pale straw. Palpi pale straw, with a slender fuscous line 
along either side. Head and Thorax brownish fuscous, with a slender white central streak, but no 
lateral streaks. Forewings brownish fuscous as far as the middle, thence broadly banded with pale 
straw-yellow, the inuer edge of the band running obliquely outward from costa to dorsum, margined by 
two golden metallic spots, one below the costa accompanied by a black dot, the other beyond it resting 
on the dorsum; scarcely beyond the middle of the band are two similar, but opposite, pale golden 
metallic spots, one at the costa, with a few scales running outward from it through the cilia, the other 
on the dorsum; on the dark basal half of the wing the usual silvery white strigulae are present, the first 
slightly bent downward at its apex, the second and third parallel to each other, but not quite reaching 
the pale band, the lower one being rather more than half the length of the median; beyond the yellow 
band the only repetition of the brownish fuscous colour is found in a rather broad apical streak, bounded 
on its lower edge by a silvery white line running with it to the extreme apex of the cilia; the costal 
cilia above it are tipped with yellowish, those below the silver line also yellowish, shading to brownish 
grev along the dorsum. Exp. al. 75-85 mm. Hindwings pale grey; cilia brownish grey. Abdomen 
brownish. Legs brownish grey, with yellowish white spurs; median pair with a yellowish white tuft 
at their base; hind tarsi faintly banded with yellowish white. 
Type 3 (65994) Mus. Wlsm. (Godm-Salv. Coll.). [PT (65995) US. Nat. Mus.] 
Hab. Mexico: GUERRERO: Amula, 6000 ft., VIII. (7. H. Smith). Two specimens. 
Allied to the somewhat larger coryphaea Wlsm., from ‘Tenerife, but differing in the 
oblique anterior margin of the pale band, and in the length and direction of the basal 
strigulae. | 
