350 HETEROCERA. 
2. Opostega elachista, sp. n. (Tab. X. fig. 7.) —— 
Antennae bronzy greyish; eye-caps ivory-white. Head ivory-white. Thorax ivory-white, ently Brey 
tinged. Forewings ivory-white, with a faint yellowish gloss ; an obscure, small, bronzy grey, ¢ oneal spo 
at a little beyond one-third; a conspicuous bronzy grey costal spot a little beyond the middle ; tee 
small bronzy grey streaks in the costal cilia, and one in the dorsal, tending to converge upon a blac 
apical dot, beyond which is another short oblique streak in the cilia ; cilia pale bronzy at the apex, 
shading to whitish grey about the tornus. Exp. al.9:5 mm. Hindwings pale grey; cilia tawny grey. 
Abdomen pale bronzy brownish. Legs shining, whitish aeneous. 
Type 3 (66790) Mus. W1sm. (Godm-Salv. Coll.) BM. 
Hab. Mexico: GUERRERO: Amula, 6000 ft., IX. (H. Z. Smith). Unique. 
Apart from the difference in size, this differs from perdigna Wlsm. in the costal 
spot being darker and larger, the two anteapical dark costal streaks being more 
parallel, not tending to converge, and in the almost entire absence of the golden shade 
before the apical black dot. 
8. Opostega pumila, sp.n. (Tab. X. fig. 9.) 
Antennae very pale ochreous; eye-caps white. Head and Thorax white, the latter with a faint aeneous 
tinge. Forewings white, with a faint aeneous tinge ; with two golden brownish, parallel, costal streaks, 
the first merging in an apical shade of the same colour, which also receives a shorter converging streak, 
from above the apex, and is followed by a minute round black dot, beyond which there is another short 
transverse streak through the cilia; cilia at the apex tinged with golden brown, on the dorsum and 
tornus yellowish white. Exp. al.65 mm. Hindwings and cilia very pale brownish grey. Legs very 
pale aeneous. 
Type 3 (66772) Mus. W1sm. (Godm-Salv. Coll.) BM. 
Hab. Mexico: tapasco: Teapa, IIL. (H. H. Smith). Unique. 
This species is nearly allied to the West Indian venticola Wlsm., but differs in the 
absence of a dorsal spot, and in its slightly darker hindwings. 
4, Opostega congruens, sp. n. (Tab. X. fig. 8.) 
Antennae brassy grey; eye-caps pale grey. Head and Thorax aeneous. Forewings shining, bronzy ; with 
three, nearly parallel, costal streaks in the costal and two in the dorsal cilia—the space between their 
extremities cupreous, followed by a black dot, beyond which is another transverse streak in the cilia— 
these streaks are all greyish fuscous; cilia bronzy. Hwp.al. 10mm. Hindwings and cilia bronzy, 
slightly less yellow than the forewings, thus appearing a little darker. Abdomen bronzy grey. Legs 
aeneous. 
Type 3 (66791) Mus. Wlsm. (Godm-Salv. Coll.) BM. 
Hab. Mexico: Guerrero: Amula, 6000 ft., VITI. (4. H. Smith). Unique. 
OPOGONA Z. 
= §+Lozostoua Stn. ({Loxostoua Wlsm.) ; =Cacnura Wkr. 
Type 1: Opogona dimidiatella Z. (Z. 1853). 
Opogona Z. Bull. Soc. Imp. Nat. Mosc. 26: 1853 504-8 Pf. 4: 13-16 (1853); Stgr. Berl. Ent. 
Zts. 14 325 sp. 110 (1870) ; Stgr-Wk. Cat. Lp. Eur. 835 no. 300 sp. 2961-2 (1871); Ldr. 
Hor. Soc. Ent. Ross. 8 26 (1872) ; F. & R. Reise Nov. Zool-Lp. 2 expl. P£. 189-8 (1875) ; 
