198 
GLASS CRUSTACEA. 
straight intestine, which occupies the whole length of the 
abdomen, accompanied on the right and left by glandular 
lobes, appearing to hold the place of the liver. An appen- 
dage, in the form of a branch, adhering to the internal base of 
the last pair of feet, appears to characterize the male indi- 
viduals. 
The teguments of the stomapods are slender, and even 
almost membranaceous or diaphanous in many. The testa 
or carapace is sometimes formed of two bucklers, the ante- 
rior of which corresponds to the head, and the other 
to the thorax, sometimes of a single piece, but free be- 
hind, leaving usually uncovered the thoracic segments, bear- 
ing the last three pairs of feet, and having an articulation in 
front, serving as a base to the eyes, and to the intermediate 
antennse. '1 hese last organs are always extended, and ter- 
minated by two or three threads. The eyes are always inter- 
approximate. The composition of the mouth is essentially 
the same as that of the decapods ; but the palpi of the mandi- 
bles, instead of being couched upon them, are always raised. 
The jaw-feet are without any whip-like appendage, such as 
they present in the decapods ; they have the form of claws or 
small feet, and in many at least (the squill®) their external 
base, as well as that of the two anterior feet, properly so 
called, presents a vesicular body ; those of the second pair, in 
the same stomapods, are much larger than the others, and 
than the feet themselves ; accordingly, they have been con- 
sidered as genuine feet, and fourteen have been reckoned. 
The four anterior feet have also the form of claws, but ter- 
minate, as well as the jaw-feet, in a talon, or by a hook, which 
is bent at the side ot the head, over the inferior and anterior 
edge of the preceding articulation, or the hand. But in some 
others, such as phyllosoma, all these organs are filiform, and 
without forceps ; some of them, like the six last, and equally 
simple ones of the stomapods, provided with claws, have an 
appendage or lateral branch. The last seven segments of the 
