( ‘ela *) 
plumules, the size varies slightly, some being narrower than 
the majority. With these is also found another scale, of the 
same size and shape but slightly shagreened, that is quite 
colourless, both under direct and transmitted light; it is 
to these scales with the plumules that I attribute the 
whiteness (already referred to) of the central portion of the 
primaries; in the terminal area the pattern becomes shorter 
and narrower, and assumes the brown hue of that region, 
many being however only coloured for the apical half; mixed 
with them also are a certain number of both the blue 
and the hyaline scales. On the inner margin are found 
some long hair-like scales (which are also found in the female 
in more abundance and over an extended area); the plumules 
are also present, and together with them isa scale, apparently 
peculiar to the male, which is again of the shape of an Indian 
club, tapering immediately from the base so that it has no 
thread-like stem; it is long—about two-thirds the length of 
the plumule, rather broad and tapering more broadly up to the 
apex which is highly rounded ; some few of these scales are not 
more than half the length of a plumule, and they are found all 
along the inner margin and extending up the termen in the 
tornal area; in colour they are mostly greyish brown, all being 
finely ribbed, minute particles (probably of pigment) appear to 
be present in the brown scales, but mixed with them are some 
of a narrower, though similar shape, which are milky-blue, 
almost the colour of skimmed milk. The brown basal scales are 
short and broad, somewhat tulip-shaped with serrated apices, 
these are of irregular length and size, whilst with them are 
two others both quite double their length, one broad, of almost 
even width, with serrated apex, the other broadish but slightly 
wider at the apex which is evenly terminated and more or 
less waved. Similar scales are found in the secondaries as 
in the primaries, the plumules and the “ blasenschuppen ” 
being in about the same proportion, both are very abundant. 
The same type of “ blasenschuppen”’ is found throughout 
the genus Thysonotis, i.e. so far as I have examined it, and I 
have studied a good many of the species; the plumules are 
by no means generally present, however in hengis and several 
others they obtain, but in many they do not obtain, and in 
