380 REPTILIA. 



on the fore-feet, I found shrimps in its stomach, from which I conjec- 

 ture that it either swims in the sea, or goes about the shore 1 . 



The [Qu. Larva of Rana paradoxal 



This animal appears to be one of the tribe of the siren, at least in 

 its circulation and respiration. 



The tongue is just within the fore-part of the under jaw, for there is 

 placed a flat part which is villous, and which most probably is the 

 organ of taste. From that, back to the opening of the passages into 

 the lungs, is a smooth surface : the opening into the lungs is upon a 

 prominence which is thick, forming an obtuse eminence. This opening 

 is a little slit upon the most prominent part, which is what must be 

 called the opening of the trachea ; but it is rather an opening directly 

 into the cavity of this projection, which is hollow, and which hollow is 

 the common opening to both lungs. That on the right side consists of 

 a pretty long pyramidal cavity, the base at the upper end, and termi- 

 nating in a kind of point. The lung of the left side is composed of 

 one lobe exactly similar to that of the right : but, besides this, there is 

 another going out from its basis, not so long, but broader, as it were 

 enclosing the other ; something like an auricle to the ventricle in some 

 animals ; and whether the right had one similar to this I do not know, 

 but I suspect it had, allhough I do not know that I could have destroyed 

 it in the examination. They are composed of a cavity at the upper 

 part, which is honeycombed on its internal surface, but at the lower 

 ends or point, they are cellular, and united across 2 . 



The heart is composed of two auricles and one ventricle, with one 

 artery, which may be called aorta pulmonalis. The vena cava of the 

 lower parts, viz. of the legs and tail, which shoidd be called ' vena 

 cava anterior' [i. e. as being near the front or ' sternal walls' of the 

 belly], passed forwards and upwards along the inside of the belly, 

 almost like the umbilical arteries and veins in the foetus ; and, when 

 got as high as the union of the liver with the heart or pericardium, and 

 what would be called diaphragm in the quadruped, it dips down and 

 passes into the vena cava hepatica. There must be another vein to 

 carry the blood from the kidneys, &c, which (if so) may be called 

 ' vena cava posterior.' 



The union of the whole veins within the pericardium, before it 



i [Hunt. Preps. Phys. Series, Nos. 801, 1103, 1104, 1817, 2416,2706, 3277, 3278, 

 3293, 3779 — 3781, showing the anatomy and marsupial economy of this toad.] 



- [This description agrees 'with the structure of the glottis and lungs in the Hun- 

 terian Preparations, Nos. 1067 — 1069, which I determine, hy comparison, to be parts 

 of a larva of Rana paradoxa.] 



