202 Records of the Indian Museum, [Vor-viak 
this section is slightly longer than the bothridia. In this region 
the proboscidial tubules are seen in a prepared specimen to be long 
and closely coiled, predicating considerable length of the probo- 
scides when extended (they are almost entirely withdrawn in both 
specimens examined). The posterior region of the head, contain- 
ing the contractile proboscidial sacs, is characterized by its great 
relative length which equals the combined lengths of the bothri- 
dial and duct regions. It is also slightly wider. The four muscular 
sacs occupy the whole of this posterior head region; the fibres in 
their walls are arranged as usual in two sets crossing each other 
obliquely but in these species the criss-cross appearance so pro- 
duced is particularly distinct and well marked. 
Each of the four proboscides emerges from the summit of a 
minute perforated papilla situated near the anterior bothridial 
margin. Each beothrium bears two of these papille. separated 
from one another by a considerable interval. 
None of the proboscides was sufficiently everted to enable the 
arrangement of the hooks to be clearly made out. The majority 
of them are of a sabre-like curve, distinctly stout and apparently 
laterally flattened. All are not of the same size, and there appears 
to be a certain variation in the proportions of these spines, some 
being shorter and more slender. A few extremely minute sharply 
curved stout hooks, strongly beaked, and with a large base (pl. x, 
fig. I5a) are also present 
Immediately posterior to the contractile bulbs the worm 
increases abruptly though slightly in diameter to form a stout 
cylindrical neck; its surface is wrinkled transversely by a few 
irregular weak groovings. Its diameter is greatest anteriorly, 
gradually narrowing till it merges at a distance of one and a half 
its greatest diameter into the regularly segmented anterior region 
of the strobila. At first the segments are wider than long and the 
lines of division difficult to see; after the fifth they become square 
in lateral view and then gradually increase in length till they attain 
a length of twice their width. No overlapping occurs and the 
lateral margins are parallel except in those where the genital pore 
is developed. 
The proglottides number about 25. ‘The last seven are re- 
markable for the enormous development of the genital pore, in 
this closely agreeing with 7. macroporus, Shipley and Hornell, 
which appears to be a closely allied species. In the present 
species, the pore is guarded by two great salient tumid lips. In 
all cases the pores are lateral, but their arrangement is very 
irregular. In the individual figured (pl. x) Gig! "13)) voitbe seven 
maturing segments, wherein pores are present, we have first one 
segment (the most anterior of the set) where the pore is on the 
right side as figured; in the three next succeeding the three pores 
follow each other consecutively on the opposite side (left) while in 
the terminal three proglottides, there is again a group of three 
pores following each other consecutively but this time it is on the 
right side, giving a formula of R1, L, 3, R 3. 
