270 Mr. R. M‘Lachlan’s Descriptions of 
margaritaceis, longe albo-fimbriatis ; pedibus griseo-ochraceis, 
tibiis et tarsis posterioribus albis, albo-pilosis ; abdomine 
griseo-albo, infra obscuriori ; appendicibus inferioribus bisarti- 
culatis, articulo primo brevi, 2° longo, pallide viridi-albis ; 
pene ad apicem testaceo, sub apicem haud_ tuberculato. 
(Mas.) 
Long. corp. 3 lin. ; exp. alar. 8 lin. 
Habitat ad Melbourne in Australia (Edwards). 
In Mus. mihi. 
Antenne whitish-ochreous, fuscous towards the apex, and with 
the tips of the joints annulated with fuscous. Head and thorax 
fuscous, clothed with white pubescence. Palpi greyish-fuscous, 
Anterior wings white, the costal margin greyish, and with a 
dark-grey oblique transverse streak, extending from near the apex 
of the costal margin half-across the wing; apical cilia greyish. 
Posterior wings pure pearly-white, without any trace of darker 
markings, and furnished with long white cilia. Legs greyish- 
ochreous, the posterior tibize and tarsi white, with long white 
hairs. Abdomen greyish-white, darker beneath. In the male the 
inferior appendices are long and forcipated, the first joint very 
short, the second extremely long, pale greenish-white ; penis tes- 
taceous at the apex, without any apparent subapical projection. 
An extremely delicate species, agreeing in all its most important 
characters with the European representatives of the genus, but 
differing in certain minor respects; the posterior wings being 
broader, with the apical portion more strongly developed, the cilia 
longer, and the posterior legs more hairy. ‘The second joint of the 
inferior appendices is usually small in European forms, the first 
being the longer. 
Genus Sciops, nov. gen. 
Antenne alis longiores, intus obsolete serrate. Caput quad- 
ratum, supra politum. Ocellinulli. Palpi maxillares hirsuti ; 
articulo primo brevissimo; 2° longiori; 3° vel 2° longiori; 
4° 2° zquali; 5° tenuiori, precedentibus in unum zquali. 
Ale fere glabra, lata: ; anticee apicem versus dilatata, sub 
apicem vix excise, sed apice oblique truncato; cellula dis- 
coidali occlusa; furcis apicalibus 1%, 24, 3%, 4* et 5? in- 
structa ; posticee anticis Jatitudine aquales, vix breviores; 
cellula discoidali occlusa; furcis apicalibus 14, 28, 34 et 54 
instructae. Pedes breves ; tibils intermediis ( 9 ) haud dilatatis. 
