226 Zoological Society. 
The different regions of the carapace are also clearly distinguished : 
the body of this new carapace is coriaceous ; the warts are more‘cal- 
careous, and consist) for the most part of small irregularlysshaped 
plates, arranged circularly round a small group of calcareous: scales. 
These groups are of different sizes, from that of the head of a‘small 
pin to the space occupied by the top of a tolerably large nail. On 
a small portion of the carapace, on each side of the middle knob, and 
in two lines directed towards the front, there are distinct portions of 
calcareous matter already formed, while on the abdominal plates 
there are still more extensive calcareous portions formed in the co- 
rium; the various groups of plates are distinctly visible, most of the 
scales are perforated, and through the holes in many cases a short 
hair or bristle protrudes. This new skin is only visible on the cara- 
pace and on the abdominal plates. [isan 
tiga F¥ 
Ecurinocekus (LItHoDES) CIBARIUS. 
Carapace considerably wider than long, subtriangular, very i irre- 
gular above ; the front sinuated, with a large projecting pointed beak 
springing from the middle, and armed above with three or four spines 
arising from one knob; the sinus on each side has three spines, the 
outer one very large and projecting ; edge of the carapace “more or 
less spined all round,.the spines on the latero-anterior ridges being 
sharp, those on the latero-posterior and posterior edges being blunt ; 
thed@tero-anterior and latero-posterior edges separated by a deep 
notch; general surface of carapace closely covered with tubercles, 
which are perforated, and furnished with bristles springing from the 
holes; on the stomachal region there is a high conical projection, 
the sides of which are comparatively smooth; near the base of this 
on each side’is a smooth somewhat oval wart, with an impressed line 
behind it; on each branchial region a high conical projection, and 
another behind the middle of a straight line drawn between the 
branchial tubercles; the posterior edge of the carapace with two 
rather large tubercles separated by a slight sinus. 
Chele with the end of the fingers hollowed out somewhat like a 
spoon, the edges granulated, the hands with numerous large bristly 
pointed tubercles on the outside, three of these being on the upper 
edge; the wrist with a large triangular expansion on the inside, 
which is spined and tubercled above; second, third and fourth pairs 
of legs nearly as long as the first pair, and very similar in appearance, 
but not so thick ; the third joint from the tarsus flat on the sides ; 
the upper surface of the legs with large conical bristly tubercles or 
spines; the spines on the tibial joint arranged in three longitudinal 
lines ; the tarsus spined, particularly on the lower edge; felts sees of 
legs quite concealed within the branchial cavities. 
Outer antenne witha large appendage at the base ; this appendage 
is smooth below, and has four longitudinal rows of spines on its up- 
per portion, the lateral rows having the longest spines. SH 
Inner antenneé situated beneath and to the outside of the eyes ; the 
first joint very thick, particularly at the base, subcylindrical ; second 
and third joints cylindrical, nearly equal in length, thickest at the tips. 
tt al 
