DR. J. MURIE ON THE ANATOMY OF THE SEA-LION. 561 
Depth or diameter between the highest point of the lesser curva- 
ture and lowest margin of the great curvature, in a line cutting 
thejspleen. =.= *- ave SUAVE . =10% inches. 
Length or outer Brvaifevende Plowing! és curve Gia the 
cesophageal to the pyloric orifice . . . : DO ape Saal $ 
Length of the lesser curvature from the seaphestia to pylorus, 
following the inflexed margin of the viscus . . =I) 33 
Depth of the narrowed part of the V-shaped angle of fie feat? 
curvature . . eee DOLL 2 
In the interior of the afohanks the ionetiudtial folds of the cesophagus stop short, by 
a sphincter-like ring of mucous membrane sharply defining the cardiac orifice, which 
is wide and thick-walled. The mucous coat, throughout the entire cavity of the 
stomach, has a rough, marbled appearance, from the irregular crossing and inter- 
blending of slightly raised, narrow ruge. There is a partial septum, formed by a 
large semilunar fold of membrane, which projects downwards in a line with the angular 
bend of the lesser curvature. Beyond this, towards the pylorus, the mucous plaits are 
more pronounced ; and close to the pyloric orifice several longitudinal large folds exist ; 
between these, reaching from one to the other, are fine, transverse, honeycomb or 
narrow elliptical depressions and sinuous plice. Although very indistinct, from the 
folds being low and flat, there is nevertheless a resemblance in the design of the 
mucous folds to what obtains in the first gastric cavity of the Cetacea, e.g. Phocena 
communis. In the Lion (Felis) the lower part of the cesophagus has transverse circular 
folds, like valvule conniventes, whereas in Otaria they are longitudinal and thicker. 
The fundus is better marked (7. ¢. larger) than in Otaria, and the walls throughout 
much thicker. ‘The orifices of the gastric glands in O¢aria are distinctly seen as minute 
pinholes, distributed here and there at intervals on the membrane. The pyloric orifice, 
guarded by a circular fold or valve, is narrow, only admitting the finger, or less than 
half an inch in diameter. 
The lesser omentum, while still comparatively thin, is rather thicker than the great 
omentum. It is attached to the lower or posterior surface of the left great venous 
reservoir, and to the right posterior edge of the left lobe of the liver. At this point it 
is also adherent to the right side of the left lateral ligament, passing on to the ceso- 
phageal end of the stomach. Having reached the upper curvature of the stomach, it 
stretches around and from it to the liver, there forming the dense layer of Glisson’s 
capsule. The great omentum forms a large, but exceedingly delicate, web of membrane, 
traversed, as usual, by vessels derived from the right and left gastro-epiploic arteries &c. 
In the present instance there was not a trace of fat in the membrane when the abdomen 
was opened. It was observed not to cover the intestines and viscera, but to be inter- 
mixed among the folds of the gut. This possibly may have been an accidental 
circumstance. 
