iu 



CETACEA. 



mucous membrane is greyish, and the only traces of ragee that can he detected are a 

 few isolated patches of lobular processes of the membrane, which is generally smooth, 

 but shows the persistent folds! In the last condition, the glandular surfaces are 

 most easily detected. It is sparsely covered with a number of reddish spots of varied 

 size and form, in which the mucous membrane is coarser than it is generally, but no 

 special gland openings can be detected in these localities. A remarkable glandular 

 area occurs on the anterior wall of the cavity almost facing the opening common 



Fig. 14. 



A sketch (natural size) of the surface of a portion of the second cavity of the stomach of Platanista at the part 

 where the " cup-shaped bodies" are found. The subsidiary figure B shows a highly magnified view of a few of the 

 cup-shaped bodies. 



to it and the first cavity (Fig. 14). It is irregular in form and is at once discernible 

 by its rough appearance ; the rugosities, in the case of the young stomach with well- 

 defined rugee, occurring between these structures ; and in the stomachs devoid of 

 rugse, on the lobular processes, but chiefly between them. In a young dolphin 

 the mucous membrane has raised rugged processes, some with rounded heads, and 

 others with cup-shaped extremities, as if the distal half of the rounded head had 

 been lost, or the cup had lost its lid. In two adults nothing but cup-shaped 

 processes remained, and their stalks were short, and the majority of the processes 

 small, and some were almost buried in the mucous membrane. They recall to 

 mind, in their form and definite outline, the sucking discs of a Cephalopod. They 

 have considerable tenacity and a slightly brownish colour, as if they were chiti- 

 nous in their constitution. Such little cups,— and there must be some hundreds, — 



