HETEROCERA. 
wo 
(Su) 
ie 9) 
PENICA, gen. n. 
(anvikn = a Wig.) 
Type: Penica peritheta Wlsm. (Tab. IX. fig. 32.) 
Antennae 4; the basal joint with strong triangular eye-cap, spreading somewhat above the joint. Labial 
Palpi dependent, smooth, about the length of the head, terminal joint much shorter than one 
Maxillary Palpi well-developed, dependent, not folded. Head smooth above, but with a strong rou e 
tuft of rough scales between the antennae; face smooth. Thorax smooth. Porewings elongate- 
lanceolate: neuration 11 veins (3 absent, 11 nearly obsolete); 6-7 stalked, enclosing the apex ; 1 not 
furcate. Hindwings —1, lanceolate, acute: neuration 8 veins ; 2-5 separate ; 5-6 stalked (continued 
to base as media), cell closed. -Abdomen somewhat flattened. Legs: front and middle tibiae smooth ; 
hind tibiae with strong bristly hairs above. 
A very distinct genus, belonging to the group of Gracilaria Hw., easily recognisable 
by the strong tufts between the antennae on the otherwise smooth head, and by the 
hairy hind tibiae. 
1. Penica peritheta, sp. n. (Lab. IX. fig. 32.) 
Antennae +; cream-white. Palpi dependent, slender; cream-white. Head white, a projecting tuft of 
yellowish white scales, between the eyes, appears to be connected with a triangular brush of shining 
yellowish white scales, arising from the basal joint of the antennae and giving a very peculiar owl-like 
appearance to the front view of the face—the inner or underside of the antennal tuft is distinctly yellow. 
Thorax white, tegulae yellow. Forewings bright yellow-ochteous, the costa narrowly whitish to the 
commencement of the cilia, the dorsum shining white nearly to the end of the fold; the bright yellow 
colour becomes somewhat intensified toward the apex, shading gradually to the cilia. Hap. al. 9 mm. 
Hindwings pale greyish ; cilia whitish, a slight golden lustre, tinged with grey, around the apex. Abdomen 
brownish white. Legs white. 
Type 2 (66739) Mus. Wlsm. (Godm-Salv. Coll.) BM. [PT'T. (66743-4) US. Nat. Mus.] 
Hab. Mexico: Guerrero: Amula, 6000 ft., VIII. (A. H. Smith). Six specimens. 
SPANIOPTILA Wlsm. 
Type: Spanioptila spinosa Wlsm. (fspinosum Wlsm. 1897). 
Spanroptita Wlsm. Pr. Z. Soc. Lond. 1897 148 no. 91 sp. 228 (1897); Meyr. Gn. ins. Lp. Wytsm. 
128 3, 12-13 no. 5 sp. 1 (1912). 
1. Spanioptila eucnemis, sp. n. (Tab. IX. fig. 33.) 
Antennae 1; white, transversely barred with brownish grey above, some black scales at the end of the 
white basal joint. Palpi divergent, slender, drooping, at least as long as the head; white, with a slender 
black ring at he base of the median joint. Head and Thorax shining, white. Forewings very narrow ; 
shining, white, dusted with black atoms tending to form a diffuse elongate patch, on the middle of the 
dorsum, and a smaller elongate spot, below the costa, at about one-fifth from the base ; mixed with black 
dusting near the apex, are a few yellowish ochreous scales, tending to form @ median line running to the 
apex; cilia tawny brownish grey, with iridescent reflections, a minute black streak running transversely 
through them at the extreme apex. vp. al. 6 mm. Hindwings linear, slightly widened on the costa 
near the base; brownish grey; cilia bronzy brownish grey. Abdomen white, becoming brownish grey 



