Note on a Coenurus of the Duikerbok. 
345 
The worm under review differs, however, in some respects from the 
typical C serialis. 
Coenurus serialis Eailliet Coenurus serialis Gaiger. 
Traits, p. 257. 
Coenurus sp. 
Often forming daughter A tendency to form daughter No daughter cysts. 
cysts. 
Of the size of a hen's egg. 
cysts. 
Size of an egg (6 J cm.) 9 cm. and 3 cm. 
from figures. 
Length of major hooks, 137- 160 fi. 
^157/i. 
Length of major hooks, 85- 115 yw. 
112 fi. 
Groups of scolices confined (?) 
to a particular zone. 
168-176^1. 
128 IX. 
Groups scattered. 
It will be seen that apart from the difference in size of the cysts, the 
size of the hooks of both rows is distinctly larger in my specimens than in 
either the tpyical specimens as given by Railhet, or in Gaiger's specimens. 
This difference is great enough to justify hesitation in placing the worm 
from the Duiker in the same species ; it may be found to belong to a third 
species of Coenurus, or else to be a variety of C. serialis. 
