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SUPPLEMENT 
beyond the end of the siphon ; hut the upper digit is curved 
towards the internal side of these organs. The species which 
furnished these details is found in the seas of Australasia. 
( Phalangioides ) . Its body is entirely of an obscure brown, 
and five lines in length. The feet are about three times as 
long, a little hairy, with the first two articulations, as well as 
the fifth and sixth, terminated by some salient angles, in the 
form of conical tubercles; these are visible at the superior 
extremity of the fifth. 
The genus Nymphon was at first confounded with that of 
plialangium , and subsequently with that of pycnogonmn . 
Fabricius placed it among the diptera ; but in one of his later 
works, in which he has more especially treated of the insects 
of that order ( Systema antliatoruni) he neither mentions this 
genus, nor that of pycnogonum. He neither says any thing 
about it in his System of Rhyngotes, which silence may be 
attributed either to negligence, or to an intention of this 
naturalist, of forming a particular order of these animals. 
Olivier placed the nymphons in this third section of the 
order aptera, taking for antennae the parts which are now con- 
sidered as palpi. He also considered that the two feet which 
exclusively carry the eggs, were not less genuine feet than the 
others, and thus extended the total number of those organs of 
locomotion to ten ; and then resting on some other approxi- 
mations founded on habits, he was induced to believe, that 
these animals have more affinity with the Crustacea than with 
the araclmida. M. Savigny appears to have adopted the 
same opinion, or at least to think that the nymphons form 
the passage from the cyami, a genus of Crustacea, to the 
arachnida. It is evident, he says, that the nymphon has lost 
the antennae, the composite eyes, and the masticatory organs 
of the cyamus ; but it appears equally certain that it has pre- 
served the fourteen feet. When we consider, he adds, the 
changes which take place externally, in the genera which con- 
