[ H ] 
Lateral Aspect. 
The cuticle is firm and serrated, but there is no segmentation This 
erration 1S quite superficial, the deeper structures showing no signs of it at 
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«e,«s5“d L»te“h , ii.pwir rs ol “ y " “ y be 
m„ th , e ,, mouth f he longitudinal layer seems to be reflected on to the 
A r?/i th ? ceso P l ’ a g us > th us forming an angle at their point of junction. 
A little lower down, about 5 mm. from the mouth, two glanddike 
“ ” eS appear to be attached to the oesophagus and held in position by 
some transverse fibres from the circular coat. These may be the salivary 
f! , nds ; Towards the tail the muscular layers grow somewhat in thickness, 
and where the intestinal canal terminates in the anus, these muscles are 
continued up to the very end as a firm band. 
The Digestive System. 
The mouth is anterior and surrounded by an oral ring. In the living 
state this mouth is very retractile, coming in and out of its ring with cr re at 
vigour. It is continued into the oesophagus, also an extremely retractile 
tube. This measures quite 7 mm. in length, and appears in the fresh 
specimen as a white opaque tube. In fact so retractile is it that when stained 
and preserved in glycerine it shrinks into a spiral tube looking wavy instead 
t°he thTck walll ^ ltS6lf ^ narr ° W and appearS aS a sIi ^ between 
1 , Alo ^. its Jon ff course the oesophagus is crossed over at many places 
by the uterine tube, which is the only other visible tube in this part of the 
worm. I he oesophagus in the female is a very long tube. 
After about 7 mm. the oesophagus becomes suddenly dilated into the 
bulbous stomach which as such is continued further on as the intestine 
without, however, any visible differentation. The intestine is nearlv 
straight and terminates in the anus. J 
The stomach and intestine are brownish-red in colour, instead of opaque 
like the oesophagus. This is the due to the presence of half digested blood 
present along its whole length. Under the microscope the contents of this 
part of the intestinal canal show large numbers of corpuscles which have 
evidently been absorbed from the buffalo’s blood. 
Beyond the two solitary glands opening into the oesophagus (.5 mm. 
from mouth, . salivary glands) there is no evidence of any other opening 
into the alimentary system along its whole course. 
The anus is subterminal in the female and situated about 2 to ^ mm 
from the tip. J 
Nervous System. 
At the oral ring there is a circular cord-like structure with one longi- 
tudmm branch springing from it on either side. But these two longitudinal 
cords cannot be traced far down, as they disappear in the meshes of the 
longitudinal muscles. In transverse sections, however, the two cords can be 
made out with tolerable accuracy lying in the midst of the longitudinal 
fibres. No gangliform swelling has ever been noticed. 
