LECTURE VII. 
33 
than the larva or unadvanced state of some hi- 
therto unknovrn species of Lizard; while others 
suppose it to be a truly perfect animal, and to 
constitute very properly a distinct genus. The 
celebrated Camper having from some mistake 
supposed it to be without lungs, referred it to the 
genus Alurjena or Eel, considering it as a species 
of Eel differing from the rest in having ramified 
tins. 
A second species of Siren is a native of Europe, 
and is only found in the celebrated lake called 
Lake Circnitz or Zitticher sea, in the dutchy of Car- 
niola. It is somewhat more than a foot in length, 
and entirely of a pale rose-colour. 
Other species of an equally dubious or uncer- 
tain cast have been discovered indifferent parts of 
the world, some of which are perhaps really the 
larvae, or young of Lizards, while others seem truly 
to constitute a distinct genus like those I have just 
described. 
Another very singular animal, which Linnaeus 
considers as a distinct genus, is the Draco or 
Dragon, otherwise called the Flying-Lizard. It is 
a small Lizard with a very long tail, and with a 
wide expanded skin on each side the body, sup- 
LECT, II. 
n 
