Wall-case, 
No. 11. 
Wall-case, 
No. 11. 
Table-case, 
No. 23. 
70 Amphibia — Microsauria. 
In Actinodon the skull is short and wide, with the circulai 
orbits placed in the middle of the length ; the nostrils are laige 
and widely separated, the muzzle is broad. A skull of this 
species is preserved in the Collection on a slab of shale from the 
Lower Permian of Autun, Saone et Loire, I ranee, and a cast o 
an entire skeleton from the same locality, presented by Prof. 
A. Gaudry, is exhibited in the Wall-case (hig. 93). 
Fig. 93 .— Actinodon latirostris (Jordan, sp.).— Frontal aspect of the cranium, with the 
sculpture omitted; from the Lower Permian of Saarbruck. | Pt.F., postfrontal ; 
Pmx, premaxilla ; other letters as in Fig. 84 (p. 64). 
Oochleosaurus , Gaudrya, Chelyosaurus, and Sparagmites, are 
Labyrinthodonts from the Permian Gas-coal of Bohemia, dis- 
covered and described by Dr. Fritsch, of Prague. Trimerorhachis 
is from the Permian of Texas. Eryops occurs in Texas, and 
also in South Africa. Bhytidosteus is from the Orange Free 
State, and Pholidog aster from the Lower Carboniferous of 
Edinburgh. 
Sub-order 1.— Microsauria. 
This sub-order contains a number of salamander-like forms 
of Labyrinthodonts referred to the family Urocordtlidjs, and to 
the genera Urocordylus , Ceraterpetum , Lepterpetum , from Kil- 
kenny, Ireland, and from Bohemia. Limnerpetum , from 
Bohemia, occupies a family by itself. The HvLONOMiDiE include 
Hylonomus , Seeley a, Bicnodon , Orthopleurosaurus, all from the 
Gas-coal of Bohemia. Microhrachis , also from Nyran, Bohemia, 
occupies a distinct family. Most of these are represented by 
electrotypes of the original fossils. 
