205 
remnant of branchiae. Lawer jaw fournished with a single row of 
teeth, upper with two concentric rows, the interior semicircular, at 
the posterior terminations of which are the patulous openings of the 
posterior nares. Tongue free at the anterior portion; the operculum 
half way between the foreley and the posterior termination of the 
rietus of the mouth; opercular cartilags three in number, the opening 
between the two inferior; their posterior extremities, unlike the Sala- 
manders, are free, or not united to the vertebrae, anteriorly they 
are united bysynchondrosis to the inferior cornua of the os hyoides, 
the bones of the tongue differ evidely from the same in Salamandrae 
and Proteus. Trachea membranosa. The aorta after running °/, of 
an inch it forms a sac, which gives of three branches, viz. one to 
each lung and larger one which continues down the spine to nourish 
the whole body. Skull composed of a solid piece of bone, articula- 
ted by two condyles to the atlas. From the head to ihe pelvis, 
-there are 19 vertebrae and 18 ribs, or rather moveable rudiments 
of ribs, similar to the other individuals of this family. The atlas only, 
as in the Salamanders, beeing deprived of this appendage. From 
the head to the pelvis exist in the Salamandra alleg. 
(Menopoma) . » 2» 2 22.2 02.200». 19 vertebrae 18 ribs 
Salamandra rubra Dandin . . .». 2»... — 18 — 
Brrtonkläteralisa.n 38.3. lese ae — 17° — 
Asolothi., see rein — 13 — 
Proteiß 4:1: ee ee —_ T— 
The pelvis of S. alleg. is somewhat or nearly similar to the 
Salamandrae; a small process is given oflaterally from the transverse 
process of the twentieth vertebra, which may represent the os ilium, 
from which another process (the ischium) descends to unite with the 
pubis; at the junetion of the two last ihe os femoris is articulated. 
There are 24 vertebrae to the tail, including the pelvic or sacral, 
Zeitschrift f. Physiol. IV. 2. 28 
