LEPIDOPTERA HETEROCERA. 
7 
very slightly convex; exterior border slightly convex, moderately 
oblique. 
1. Propachys nig riven a. 
Mas. Lcete rosea ; caput ochraceum ; palpi , abdomen subtus et 
pedes cyaneo-nigra ; alee anticee venis nigris. 
Male. Bright rose-colour. Head ochraceous. Palpi, abdo- 
men beneath and legs metallic bluish black. Fore wings with 
black veins. Length of the body 7 — 9 lines; of the wings 18—20 
lines. 
a — e. North China. From Mr. Fortune’s collection. 
/. Silhet. From Mr. Stainforth’s collection. 
g. North Hindostan. From the Entomological Society. 
k . — - ■ ? Presented by E. Doubleday, Esq. 
Genus 10. DERCHIS. 
Fcem. Corpus crassum. Caput pilosissimum. Proboscis obso- 
leta. Palpi quatuor subaequales, porrecti, lanceolati, pilosi, capitis 
latitudine longiores ; articulus 3us 2o brevior. Antennae graciles. 
Thorax squamosus. Abdomen alas posticas non superans. Pedes 
leeves, sat robusti ; tibiae posticae calcaribus quatuor longissimis. 
Alae anticse latae, apice subrotundatae, costa subconvexa, margine 
exteriore subobliquo; marginis interioris fimbria longissima. 
Female. Body thick. Head very pilose. Proboscis obsolete. 
Maxillary and labial palpi porrect, lanceolate, pilose, longer than 
the breadth of the head, almost alike; third joint shorter than the 
second. Antennae slender. Thorax squamous. Abdomen not ex- 
tending beyond the hind wings. Legs stout, rather long, pilose, 
squamous; hind tibiae with four very long spurs. Wings elongate, 
stout, moderately broad. Fore wings rounded at the tips; costa 
and exterior border slightly convex, the latter slightly oblique. 
Hind wings with a very long fringe on the interior border. 
1. Derchis horridalis. 
Fcem. Fusca ; alee anticee nigricante conspersee , macula discali 
fusca , striga postica e squamis nigris ; posticae subobscuriores. 
Female . Brown, cinereous-brown beneath. Fore wings 
minutely blackish-speckled ; discal spot brown ; a streak of black 
scales towards the base of the interior border. Hind wings a little 
