158 
EXOTIC ZUICEOLEPIDOPTEEA. 
Hyalopseustis vitrea, n. sp. 
d . 47-53 mm. Head, palpi dark grey. Thorax blackish. 
Abdomen blue-black, venter white, sometimes some whitish spots 
on sides. Forewings elongate-triangular, costa posteriorly mode¬ 
rately arched, apex rounded, termen rounded, somewhat oblique ; 
blackish; a broad rather oblique transverse pale"blue subhyaline 
fasciate blotch beyond cell, not quite reaching costa or tornus, 
veins on this black: cilia dark grey, basal third blackish. Hind- 
wings pale blue subhyaline; veins black, in one specimen rather 
broadly and suffused together on basal third; a narrow rather 
irregular oblique black fascia crossing wing on end of cell and 
continued to middle of termen; a moderate black fascia running 
rouud apex and termen to tornus; cilia as in forewings. 
Peeu, Chanchamayo ; 4 ex. This very curious and interesting 
insect, entirely unlike any Stenomid, appears to imitate a form of 
Danaid butterfly, such as ItJiomia. 
PETASANTHES, n. g. 
Head with appressed scales, face rather retreating; ocelli small,, 
posterior; tongue short. Antennas (broken) in <y with long 
fasciculated ciliations (3), basal joint moderate, without pec-ten. 
Labial palpi extremely short, porrected, filiform, pointed. Maxil¬ 
lary palpi obsolete. Posterior tibias with appressed scales. Pore- 
wings 16 furcate, lc distinct, 2 from towards angle, 3 and 5 
approximated from angle, 4 absent, 7 absent, 8 to costa, 10 
from 11 from somewhat before middle, no secondary cell. 
Hindwings 1, oblong-ovate, termen not sinuate, cilia 1; 1 c distinct, 
2 from 4, 3 and 5 approximated from angle, 4 absent, 6 and 7 
stalked, 7 to apex, 8 closely appressed to cell at base, diverging 
from near base. 
This remarkable insect I can only regard as an abnormal 
Stenomid, perhaps allied to Promenesta. The minute labial palpi 
are unique in the family, but similar abrupt and excessive 
reduction does occur in the allied Gelechiadce, at present un¬ 
explained but probably connected with larval habit. The neura- 
tion, owing to the loss of three veins, in particular the important 
vein 7 of forewings, is less decisive than it might be, but it is 
not in any respect inconsistent with my views. The superficial 
appearance, strikingly dissimilar to any Stenomid. but strongly 
suggestive of the highly peculiar ornamentation of the Tortricid 
genus Pseudatteria, is probably due to mimicry, since Pseudatteria 
is in fact mimicked still more accurately by other groups of 
Lepidoptera (I have a singular and very noteworthy Zygaenid 
mimic of it). 
Petasanthes leucactis, n. sp. 
d . 26-29 mm. (Head, thorax defaced.) Palpi blackish. 
Abdomen blackish, oc-hreous-orange segmental rings. Forewings 
