DECAPODA, 
197 
quently by that of the two following pairs, which terminate in a 
forceps with two blades, or a didactyle hand. In some, the last two, 
or four, are much smaller than those which precede them, therein 
approaching the Anomala; but the fan-like fin of the extremity of 
their tail and other characters remove them from that section. The 
thorax is narrow anteriorly, and the front projects in a pointed snout 
or rostrum. 
Some of them, — GalaihadecE, Leach, as well as the preceding Ma- 
croura, have four pairs of false feet ; the mediate antennee flexed like 
an" elbow, Avith the two filaments representing the stem, are mani- 
festly shorter than their })eduncle. That of the lateral antennee is 
never i)rovided with a lamina in the form of a scale. The two ante- 
rior feet alone terminate in a didactyle hand, which is frequently much 
flattened. The last segment of the tail is bilobate, at least in most of 
them. 
At the head of this division come those whose * posterior feet are 
much smaller and thinner than the preceding ones ; they are filiform, 
bent up, and useless in locomotion. In the 
Galathea, Fah. 
The tail is extended, the thorax nearly ovoid or oblong, the medi- 
ate antennae salient, and the forceps elongated. The superior surface 
of the body is usually deeply incised or striate, spinous and ciliate. 
The most remarkable species of the European seas are the 
Galalhea rugosa, Fab.; Leo, Rondel., Hist. des. Poiss., p. 390 ; 
Penn. Brit. Zook, IV, xiii ; Leach, Malac. Brit., XXIX, the 
claws of which are long and cylindrical, the mandibles eden- 
tate, and that has three long spines in the middle of the front, 
directed forwards, and ten similar and equally projecting ones 
on the tail, six on the second segment, and four on the following 
one f . 
G alalhea slrigosa ; Cancer strigosus, L. ; Herbst., XXVI, 2 ; 
Penn. Brit. Zool. IV, xiv ; Leach, hlalac. Brit., XXVIII, B. 
Similar, as respects the mandibles, to the preceding species, but 
having a projection in front, or a rostrum, with four teeth on 
each side, and an eighth at the end ; the claws are large, but 
neither verv long nor linear, and very spinous, as is a great 
p.irt of the following feet. This last character distinguishes it 
from a third species, also found in European seas, the Galathea 
.yqua/jif/hra, Leach., Ivlalac. Brit., XXVIII, B. 
This learned entcmologist has made a peculiar genus, Grimotea, 
of the Galathea gregaria oi Fabricius, The second joint of the in- 
termediate antennae terminates in a club, and the three last external 
* According to a verbal communication from Doctor Leach, in the Galalhea 
amplectens, Fab., it is not only the two posterior feet which are smaller, but the 
penultimate likewise. This species would then form a separate genus. 
•f- This species forms the cenus iSIunida, Leach. See Desmar., Consider., jiage 
191. The latter is mistaken however in attributing to the former the credit of 
having been tlic first to discover the identity of this species with the lion of Koii- 
(lelet. See my Hist. Gener. des Crust, et des Insectes., t. VI, p. 198. 
