[ 3°7 ] 
XL. A Supplement to the Account of an Amphibi- 
ous Bipes ; by John Ellis, Efq\ [Art.XXH.) 
being the Anatomical Defcription of the 
faid Annual , by Mr . John Hunter, F. R. S. 
Read June 5, f g '^HE tongue is broad and has very 
l/ * little motion. It has a bone dm iiar 
to that in birds, turtles, &c. On the posterior and 
lateral parts of the mouth, are three openings on each 
fidej thefe are fimilar to the flits of the gills in lifh, 
but the partitions do not refemble gills on their out- 
er edges, for they have not the comb-like flrud: ure. 
Above * and clofe to the extremity of each of thefe 
openings externally, fo many proceffes arife, the 
anterior the fmalleft, the pofterior the largeft ; 
their anterior and inferior edges, and extremity are 
ferrated, or formed into fimbriae : thefe proceffes fold 
down and cover the flits externally, and would feem 
to anfwer the purpofes of the comb-like part of the 
gill in fifh. 
At the root of the tongue, nearly as far back as 
thefe openings reach, the trachea begins much in the 
fame manner as in birds. It paffes backwards above the 
heart, and there divides into two branches, one going 
* To avoid the confufion in our ideas, which might arife from 
the ufe of the words anterior, pofterior, upper, lower, &c. in the 
whole of this defcription, the animal is confidered in its natural* 
horizontal pofition, fo that the head is forwards, the back up- 
wards, &c. 
R r 2 
to 
