70 



DR. J. MURIE ON THE WALRUS. 



[Jan. 23, 



them, — viz. that the posterior half of the body is move or less 

 of a reddish or pinkish hue, the remaining segment being pale- 

 coloured. I myself incline to the opinion that this coloration may 

 not be of a specific kind, but due in some measure to the in- 

 tensely congested condition of the stomach and sanguineous nature 

 of the food. The accompanying figures I have had drawn under 

 my supervision ; and Dr. Baird is pleased to consider them a faithful 

 delineation. 



A 



A. 



Ascaris hicolor, Baird. 



Three female specimens, of about the natural size ; that to the left shows the 

 manner in which occasionally the caudal end is found coiled up. B. Por- 

 tion near the middle of the body, enlarged so as to display the transverse 

 striations ai)d how some of them interdigitate. C. Magnified view of the 

 head and labia. 



-VIZ. 



the 



There still remain two points worthy of consideration- 

 cause of death, and whence the Entozoa were derived. 



1. Death seems to have resulted from the ulceration of the sto- 

 mach. It is not clear, though, why the animal should have suc- 

 cumbed so suddenly. Literally speaking, these ulcerations were so 

 extensive that it is curious the animal should have survived so long. 

 The chronic stage of the ulceration alone accounted for this. This 

 instance is one exemplifying pure chronic gastritis, due, no doubt, to 

 the presence in such numbers of the Entozoa. 



2. It has been said by some parties that the Entozoa were pos- 

 sibly derived from food given to the Walrus after its arrival at the 

 Gardens ; but there are many reasons against this being a likely 

 circumstance. In the first place, the fact of the Entozoa being a new 

 species peculiar to the Walrus militates against the above assertion. 



