[ 37 ] 
sideways. When viewed under a high power the general epithelium 
coveriner the body is seen to be thrown over these sensitive structures as 
a distinct well-marked line. 
The groove lying between these two rows of papillae is wide. 
Spermatozoa. 
The spermatozoa as obtained from the testis of a bullock s worm are 
round granular very refractile bodies, and in the fresh state cannot be easily 
distinguished from ova. They of course escape from the cloaca through 
the penis, and are often glued together in clumps and suspended from the 
opening. 
In stained specimens they shrink up greatly and appear more or less 
pyramidal in shape, being attached to one another by delicate hbnnous 
matter, the whole picture thus assuming a grapelike form. The nuclei are 
deeply stained whilst the protoplasm presents no special characteristics. 
The points of difference and resemblance in the two species of worms 
are seen in the subjoined table :— 
Length 
Greatest Breadth 
Diameter of Head 
Character of cephalic 
end. 
Distance of genital pore 
from oral opening. 
« • , 
Diameter at point of 
genital pore. 
Distance of anus from 
tail. 
Cuticular thickening at 
tip of tail 
Mouth 
Oesophagus 
Females. 
Buffalo Worm. 
Average 220 to 250 mm. .. 
1.25 to 1.5 mm. 
.29 to .30 mm. 
33 to .37 mm. 
2 to 3 mm. • • • • • • 
Not specially thickened 
Surrounded by an oral ring. 
Narrow, retractile tube, 
7 mm. long. 
Diameter Oesophagus .116 
mm 
Diameter Stomach 233 mm 
Bullock Worm. 
Over 60 mm. ; never com¬ 
pletely dissected out. 
• 35 mm 
.25 to .27 mm. 
.20 to .29 mm. 
■> 
? 
No definite oral ring detec¬ 
ted. 
Narrow retractile tube 58 to 
.62 mm. long. 
Tapering and much smaller 
than body. Tapering portion 
25 mm Neck surrounded by 
a collar. 
.65 to .75 mm. 
Not much narrower than 
rest of body. No distinct line 
of demarcation from rest of 
body. 
.90 to .95 mm. 
