STOMAPOUA. 
213 
have a scale at their base, and the stem of the intermediaries is com- 
posed of three filaments. The body is narrow and elongated ; the 
ocular pedicles are always short. 
This family is composed of but one genus, that of 
S'juilla; Fab., 
^\"hich we will divide in the following manner : — 
In some the crustaceous shield is preceded by a small and more or 
less triangular plate, situated above the segment, in which the eyes 
and mediate antemice are inserted, only covers the anterior portion of 
tlie thorax, and does not curve downwards on the sides. The 
piece which serves as a peduncle to the mediate antennae, as well as 
the ocular pedicles, and the external sides of the end of the abdomen, 
are exposed. 
Here the body is almost semi-cylindrical, the posterior edge of the 
last segment being rounded, dentated or spinous ; the lateral appen- 
dages of the last six feet are styliform. 
Squilla, Lat., 
The true Squillte, along the whole inner side of the penultimate 
segment of the two large claws, have an extremely narrow groove, 
dentated on one of its edges and spinous on the other, and the ensuing 
joint, or the claw, falciform and usually dentated. 
Squilla mantis ; Cancer mantis, L. ; Herbst., XXXIII, 1; 
Encyclop. Alethod., Atl. d’Hist. Nat., CCCXXIV ; Desmar., 
Consid., XLI, 2, is about seven inches in length. The base of 
the large forceps is furnished with three moveable spines, and its 
claws have six elongated and sharp-edged teeth, the last one 
being the largest. The segments of the body, the last one 
excepted, are marked by six longitudinal ridges, mostly termi- 
nating in a sharp point ; the middle of the last is strongly cari- 
nated, punctured, and terminated posteriorly by a double range 
of indentations, and four very stout points, the mediate teeth of 
which are most closely approximated; each lateral margin has 
two reflected or thicker divisions, the last one terminating- in a 
t)oint. The peduncle of the lateral fins is 2 ^ 1 'olonged beneath 
and terminated by two very strong teeth. It is common in the 
Mediterranean. The Squille de Desmarest, Risso, Crust. II, 8, 
which also inhabits the same sea, is but two inches and a half in 
length. Its claws have five teetli; the shell and the middle por- 
tion of the abdominal segments, the last ones cxcei^tcd, are 
smooth*. In the 
Goxodactylus, Lat., 
The groove of the penultimate segment of the large claws is 
Avidened at its extremity, presenting neither dentations nor spines. 
The finger is dilated, or resembles a knot near its base, terminating 
* For the other species, see the article Squille, and pi. of the Encyc. Method. ; 
Uesniar., Consid. In pi. XLIl, he has given a detailed figure of the Squille 
queue-rude. 
