ROOM IX.] NATURAL HISTORY. 21 
(Hylo ), have the ends of their toes dilated into a roundish 
disk, by which they climb. The Horned Frogs have the 
eyebrows extended into horns. 
In Case 3 are Toads ( Bufo ), some of them exceedingly 
large. The Bombinaiores, or Earless Toads, differ from 
the others, merely by having the drum of the ear concealed 
under the skin. Some, as the Rhinellce , have their nose 
produced to a point ; and one ( Pipa ) is remarkable for 
its flattened shape, and for the manner in which the 
female carries her young in little cells on her back. The 
Salamanders ( Salamandra ), and Efts {Triton), follow 
the Toads: amongst them are the European species for¬ 
merly absurdly supposed to be insensible to the action of 
fire; also several American species, as the Amphiuma, 
which is thought never to have any gills, but it pro¬ 
bably loses them at a very early age. At the end of these 
are placed the Sirens, which retain their gills during 
the whole of their life, and are therefore capable of living 
equally well on land or in water; amongst these are 
the Axolotl of the Mexicans, which in all respects resembles 
the larva of the Common Eft, but is believed to be a 
full grown animal; the Menobranchus from America, 
and the Proteus from the caverns of Carniola, an animal 
which never voluntarily approaches the light of day, and 
whose very small eyes are so hidden by the skin, that 
it appears to be absolutely destitute of those organs. A 
wax model, from a living healthy specimen of this ani¬ 
mal, is placed near it, to show the form of its lungs when 
not contracted by immersion in spirits of wine. The Caro¬ 
lina Siren, first described by Ellis, which has only two 
short feet in front; and lastly the Ccecilia, or blind Worm, 
without any limbs, whose eyes, always very small, and 
nearly concealed under the skin, are sometimes wholly 
wanting. 
Case 4 contains specimens of Crustacea, as Crabs, Lob¬ 
sters, Woodlice, and Cirripedes, or the animals which 
inhabit the Acorn Shell and Barnacles, preserved in spirits. 
Cases 5 and 6 contain specimens of Wood pierced with 
Termites; the larvse of Coleopterous and Hymenopterous 
insects, as Cerambyces, Wasps, and Tree Ants. A series 
of Wasp-nests, exhibiting the different structures formed 
by these animals for the protection of their young. The 
