( 2 ) 
and it may well be that special attack was directed upon 
the scent-glands merely on account of their substance as 
compared with the rest of the wing surface. The facts appear 
to tell strongly against the view that specially protective 
(aposematic) substances are, as some have supposed, concen- 
trated in the male scent-glands; but it would not be safe to 
draw any more far-reaching conclusions. 
Inasmuch as an alternative view has been mentioned, it may 
be advantageous to quote the following passage from a paper 
published in 1882 by Professor Metpona, F.R.S. (Ann. Mag. 
[xi 
Nat. Hist., Dec. 1882, p. 425). Writing in answer to Mr. 
W. L. Distant, Professor Meldola states :— 
“There is not the least warrant for the supposition that 
scent-glands or tufts have anything to do with distastefulness. 
The acrid juices of distasteful butterflies are not generally 
emitted from any particular organ, but permeate all the 
tissues of the body. The fact that such organs exist in one sex 
only is strongly suggestive, if not demonstrative, of the view 
that they are secondary sexual characters ; and as such they 
are regarded by Dr. Fritz Muller, who has systematically 
investigated these structures, and has in many cases actually 
detected the odour emitted, which is often of a pleasant 
character.” (Jen. Zeit., vol. xi, p. 99; Trans. Ent. Soc. Lond. 
1878, p. 211.) 
REMARKABLE Larva oF Spiramiopsis.—Professor E. B. 
Poutton also exhibited on behalf of Mr. G. F. Leigh, F.E.S., 
of Durban, a blown specimen of the larva of Spiramiopsis 
comma, Hampson, showing the two pairs of remarkable 
processes as well as the two eye-like spots, one situated in 
front of the base of each posterior process. The anterior 
pair are placed on the second thoracic segment, the posterior 
on the third. In the dried specimen the ground-colour of 
the dorsal and dorso-lateral regions of each of these segments 
is of a brilliant orange-brown tint, making a most effective 
background for the intensely black, nearly circular eye-like 
spots. The effect of these latter is also greatly enhanced 
by a dark semi-circular line placed outside a margin of orange 
embracing nearly half the circumference of each spot. This 
