of Heterocera from Japan. 197 
line from the costa near apex, continuous with a broad trans- 
verse plum-coloured streak, intersected by a pale line; sub- 
marginal area whitish; a series of black marginal spots ; 
costal margin (almost to apex) black, white-spotted beyond 
the cell: secondaries brown, with dusky outer border; fringe 
sordid white, intersected by a dusky line: body nearly as in 
the preceding species. Wings below darker than in the other 
species of the genus, with well-defined blackish undulated 
marginal lines on a narrow pale border; secondaries with a 
broad regular dusky discal belt. Expanse 2 inches 2 lines. 
Yokohama (Pryer and Jonas). 
116. Xylina pruinosa, n. sp. 
Primaries above shining silvery grey, with indications of a 
paler irregular transverse discal band; the base of the cell, 
three blackish-edged discoidal spots, an oval patch near the 
base on the interno-median interspace, and a small round spot 
(black-edged externally) paler grey; a submarginal row of 
black dots, a marginal undulated dark line ; fringe irrorated 
with white: secondaries sordid white, the apical area and 
outer border broadly grey; fringe testaceous at the base, 
tipped with white, grey in the centre: thorax grey, speckled 
with testaceous and white; abdomen pale greyish or sordid 
white, with a darker dorsal line and a rosy brownish fringe. 
Wings below shining silvery whitish, with opaque brown- 
speckled costal borders to all the wings and outer border to 
primaries ; secondaries with a dusky dot at the end of the 
cell ; body rosy brownish. Expanse 1 inch 5 lines. 
Yokohama (Pryer and Jonas). 
Nearly allied to X. rhizolitha, but greyer, with much paler 
secondaries. 
In my opinion the genus Aporophylla ought to be placed 
either with or close to Xylina; so far as I have been able to 
discover, it agrees in structure with X. rh¢zolitha. The main 
differences which Stainton gives to distinguish the Apamide 
from the Xylinidz are that the imagines of the first family 
have the wings ‘‘in repose roof-shaped,” and those of the 
second family ‘‘ folded in repose; ” the genera Aporophylla 
and Xylina are distinguished by the larve of the first feeding 
‘on low plants,” and those of the second ‘ on trees.’ Cha- 
racters such as these, which can be ascertained only by the 
field-naturalist, should surely not weigh so heavily as to sepa- 
rate two insects so similar as Aporophylla australis and 
Xylina rhizolitha by 81 pages. I presume that, notwith- 
standing the rarity of A. australis, it is known to close its 
wings like an Apamea. 
