392 Zo(jloyical Society. 



Cheiroptera. 



In the pipistrelle, the sheath of the gullet, excepting 1-1 6th of 

 an inch at the stomachic end, was formed of the muscular fibre of 

 animal life. 



Fer.e. 



Insectivora. — In the three British genera the muscular fibre of 

 animal life covers the whole length of the gullet. 



Canidcc. — The muscular fibre of animal life extends to the sto- 

 machic end of the gullet. In the silver)^ fox none of this fibre could 

 indeed be detected on the terminal third of an inch of the gullet, 

 which should be examined again in another individual. 



ViverridcB. — In the African civet cat the striated muscular fasci- 

 cles do not cover the last portion of the gullet. 



Felida. — The stomachic end of the gullet is not clothed with the 

 muscular fibre of animal life ; but in the caracal a few irregular 

 fibres were observed on the cardiac end of the gullet, perhaps be- 

 longing to the muscular fibre of animal life, although they were quite 

 destitute either of transverse or longitudinal streaks. 



MusteIid(S. — In the otter the muscular fibre of animal life covers 

 the gullet, excepting about half an inch of its stomachic extremity ; 

 in three species of Mustela this fibre invests the whole gullet. 



Phocidce. — In the seal no muscular fibre of animal life was found 

 on the gullet within an inch of the stomach. 



Ursidce. — In the genus Nasua, and in the sloth-bear and Ame- 

 rican bear, the gullet is throughout clothed with the muscular fibre 

 of animal life, which in the latter animals is very thick and red on 

 the last portion of the gullet, and extends on the cardiac extremity 

 of the stomach. 



Cetacea. 



In a porpoise no muscular fibre of animal life could be found on 

 four inches of the stomachic end of the gullet, although this fibre was 

 abundant on the rest of the thoracic portion of the gullet. 



RUMINANTIA. 



The voluntary muscular fibre runs along the entire length of the 

 gullet, and sometimes to a short distance on the cardiac extremity 

 of the stomach. The striated muscular fibre on the last portion 

 of the gullet is often mixed with a much greater proportion of the 

 muscular fibre of organic life. 



RODENTIA. 



The whole length of the gullet is clothed with the muscular 

 fibre of animal life. 



Maksupialia. 



In the kangaroo and the squirrel-flying opossum no muscular 

 fibre of animal life was found on the stomachic end of the gullet. 

 Birds, Reptiles, and Fishes. 



I have carefully searched for the striated muscular fascicles in 

 the gullet of the birds and reptiles mentioned in the table, but in 

 vain. In Birds the fibre of the superficial coat of the gullet is often 



