Zoological Society. 225 
Above, anterior wings rich crimson, the costal nervure and the 
inner margin fuscous black, the apex broadly and triangularly black, 
the black colour commencing on the costa opposite the end of the 
cell, becoming narrower towards the outer angle, where it unites with 
the fuscous black of the inner margin. Posterior wings black, marked 
with a large blue discoidal patch, extending nearly to the anal angle. 
Below, anterior wings with the part corresponding to the crimson of 
the upper surface much paler than above, the cell with two round 
black spots ; the black of the apex and inner margin replaced by pale 
-fuscous; the disco-cellular nervules marked with a fuscous black 
dash, and the apex crossed by two oblique bands of the same colour. 
Posterior wings pale fuscescent, with two rounded fuscous spots in 
_ the cell; several scattered liture of the same colour before the middle 
of the wing, then two transverse bands also fuscous, followed by a 
series of seven black spots pupilled with white, the last bipupillate, 
the second spot the largest: between these spots and the margin a 
third fuscous band. 
Head, thorax and abdomen black. 
This beautiful butterfly is I believe unique in my own collection. 
It was taken by my friend Mr. Empson many years ago in South 
America, and was one of a very few things—all at that time very rare 
-—which were saved from the shipwreck of a large collection. 
Mr. E. Doubleday, whose experience gives him great facility, has 
kindly supplied me with the generic characters. 
2. Description or EcnINOCERUS CIBARIUS, A NEW SPECIES AND 
SUBGENUS OF CrusTacEA. By Apam Waits, F.L.S. erc. 
Amongst the Decapod Crustacea there’ are several genera of doubt- 
ful situation which belong to neither of the great divisions Brachyura 
and Macroura. Professor Milne-Edwards first brought them together 
as a section, under the name of Anomoura; but, as he remarks, they 
do not form a very natural group, the principal advantage derived 
from its formation being the opportunity which it gives the syste- 
matist to withdraw all the aberrant species from the two very natural 
sections specified above. Nota year passes but new species are added 
to this group, and occasionally a new form is found; in course of 
time these discoveries will serve to link genera which seem at pre- 
sent to be distant from each other, if at all related. The species 
described below is close to the genus Lithodes, some of the species 
of which have considerable resemblance to it. The generic name 
describes the peculiarity of the spined appendage to the outer an- 
tennz, while the specific name is given in allusion to its excellence 
as an article of food. 
In one of the two specimens in the British Museum, the legs, cara- 
pace and abdomen are covered with numerous barnacles, and on 
taking off the old carapace, which had commenced to split, the still 
__€oriaceous envelope, which would have formed the new carapace, 
may be found beneath it. On this are very plainly indicated the 
crowded warts, the scattered knobs, and lateral projecting spines, 
which are so prominent on the outer surface of the old carapace, 
Ann. & Mag. N. Hist. Ser. 2. Vol. iii. 15 
