604 Mr. R. J. Ortlepp on a new 
in the anterior half, where these projections give the outline 
of the strobila a finely serrated appearance. 
(b) Head.—The scolex (fig. 1) is well developed, measuring 
across the suckers from 580 to 650 w in breadth, with a 
length varying from about 500, to 600. Its anterior 
portion forms a large and somewhat antero-posteriorly 
flattened protuberance ; viewed from the anterior aspect 
this protuberance is roughly quadriradiate, each ray forming 
Bien. 
Head. 
D.L,.=dorsal lobe of head protuberance; H.=hooks covering 
protuberance; R. H.=rostellar hooks ; S.=sucker. 
Fig. 2. 
a=yostellar hooks; b=hooks from suckers; e=hooks covering 
the protuberance. 
the axis of a bulb-like swelling, separated from its immediate 
neighbour on either side by a valley. These four lobes are 
situated one dorsal, one ventral, and two lateral. 
Except for their median areas the whole surface of these 
lobes is covered by numerous minute hooks, 5 to 6 long 
(figs. 1 and 2c)—these are arranged in longitudinal rows. 
The anterior face of the protuberance is occupied by the 
rostellum, which is sunk into it. The rostellar hooks are of 
