114 
NATURAL HISTORY. 
[N. ZOOL. GAL. 
' Megalophys. * ^v-Telmatobius. 
Asterophys.^-^>c 'Leptobrachium. 
d. Telmatobiusw^^s^-sterophrys. 
z-^Pelobates, 
Scaphiopus. 
Pyxicephalus. 
/Alytes. 
■^elodytes. 
lombmator. 
Pleurodema. 
Hyadaetyla. 
Oxyglossus. 
"Sclerophys. 
\ k i Kalophrynus. 
Systoma. 
Stenocephalus. 
“Felodytes. 
\ V\-*~Alytes. 
\ \r^Scaphiops. 
V^HPelobates. 
•Bombinator. 
Fam. 3. BufonicUe. 
Dendrobate. 
Rhinoderma. 
Atelope. 
Bufo. 
Phryniscus. 
Hylaedactylus. 
—«Plectropode. 
Engystoma. 
TJperodonta. 
Breviceps. 
Rhinophryne. 
Fam. 4. Pipidce. 
Dactylethra. 
Pipa. 
Ord.II. Urodeles. 
Fam. 5. Scdaman- 
dridce , 26. 
Salamandra. 
-Onycopus. 
Salamandrina. 
-Tritro. 
Lissotriton. 
Order IV. Crypto- 
BRANCHIA. 
Fam. 7* Amphiu- 
midce, 26. 
Amphiuma. 
Menopoma. 
Order V. Peren- 
NOBRACHIA. 
II. Immutabilia. Fam .3. Siredonidce,26 
Order III. 
Axoloth, 26. 
d a m-r.. T Fam. 9. Menobran- 
Batrachophilia. chicUB) 26# 
Fam. 6. Ccecilidce, 26. Menobranchus. 
Caecilia. Fam.10. P)’oteidce,26. 
Siphonops. Proteus, 26. 
Pseudobranchus. 
Epicrium. 
Rhinatrema. 
Siren, 26. 
The Table Cases in this and the next Rooms contain the Collection 
of Radiated Animals, ( Centronics, Pallas,) which are so called from 
all the parts of their body and members being disposed in a radiated 
form, which often gives them the shape of the flowers of plants. 
The pores of the skin of some kinds, and the whole of the cellular 
substance of others, is often so filled with calcareous matter, as to leave, 
when the animal is dead or removed, a hard case or a stony coral; the 
latter often representing, in a very perfect manner, all the more import¬ 
ant characters of the animal. It is the hard parts, or skeletons, as they 
may be called, of these animals, which alone can be shewn with any 
effect in collections, but whenever it is possible, they should be studied 
in connexion with the animals which form them, as the animal alone 
affords the proper characters for their classification, and the study of the 
animal and coral together, enables the student to understand, in other 
cases, by the examination of the coral atone, what was the probable 
structure of the animal that formed it. 
The Table Cases of this Room contain the hard parts of the 
Echinodermata, so called from their body being covered with a 
hard coat formed of variously shaped calcareous pieces imbedded in the 
surface of the skin. These pieces are formed by the earthy particles 
being deposited round certain definite spots in the skin, and as they are 
developed, they assume a definite arrangement into certain distinct 
shapes peculiar to the different kinds; although these are strongly 
united together by the skin, and have a kind of organization during the 
life of the animal, they may easily be separated from each other after 
death, and then appear like separate bones. This structure allows the 
animal to increase both the size and the number of the pieces that com¬ 
pose its protecting case as the body grows, and also to repair, by the 
deposition of fresh calcareous particles on the skin of the healed part, 
any injury which the animal may have received from external accidents 
during its life. ( See such a specimen, Case 3.) 
They are all marine, and live on animal food. The free kinds 
move about with their mouths beneath, and the attached ones are af¬ 
fixed by their backs with their mouth above, to enable their limbs to 
bring the food within its reach. 
