448 THE ENTOMOLOGIST. 
wings being precisely similar to those of the female, and the 
fourth, which is the left fore wing, that of the male. Does 
this often occur?—M. N. Inman; 10, Upper Hamilton 
Terrace, N.W. 
The wings are of a bright sienna-brown; the fore wings 
have the costal margin edged with black, and the usual four 
long transverse black spots, known as the date mark, under 
the base of the subcostal ray on the upper side ; a waved and 
irregular narrow black band crosses the middle of the wing, 
and between this and the hind margin are two oblique black 
bars, the inner of which is slightly interrupted, the outer 
entire; the inner takes the place of the transverse series 
of round black spots, usual on this part of the wing; the 
outer black bar represents the usual scalloped black bar 
exterior to the series of black spots, to which I have just 
alluded; still exterior to this is a double black line parallel 
to, and almost adjoining, the hind margin; the hind wings 
have a few of the usual black markings near the base, and 
extending towards the middle of the wing, and exterior to 
these is a transverse series of three black spots, the first 
oblong, the others nearly circular; parallel to the hind 
margin is a continuous black bar, and exterior to this a 
double black line parallel to, and almost adjoining, the hind 
margin. On the under side the fore wings present no very 
remarkable character: the silver spots on the disk of the 
hind wing correspond in number with those of the normal 
insect, but it will be seen, by a reference to the lower figure, 
that they differ in form; the most remarkable deviation from 
normal character is that the usual series of seven semicircular 
silver spots parallel to the hind margin is entirely absent, 
and its place supplied by a continuous silver bar parallel to 
the margin. . It need scarcely be observed that the term 
parallel is not strictly applicable, as the markings thus deno- 
minated ought to be straight, whereas, in this instance, they 
follow the curved outline of the wing. In reply to Mr. 
Inman’s query as to the monstrosity in the specimen of 
Colias Edusa, | may reply, without hesitation, that such 
monstrosities rarely occur; nevertheless, | have known 
instances, more especially in Mr. Bond’s rich collection, 
of specimens which have one wing only male, and others 
with one wing only female. 
