ELEDONE. 493 
mp. ev., F.D.). The upper strands of the upper sheet, 
and the inner strands of the lower sheet, after a superficial 
course run together, and sinking deeper join in with the 
great lateral muscle. 
Muscles attaching gills to mantle——The narrow 
muscular band which runs along the external surface of 
the efferent vessel of the gill, from the tip downwards, 
after leaving this artery at the base of the gill, runs 
obliquely inwards over the ventral surface of the kidney 
to meet its fellow in the middle line (Pl. V, fig. 37, 
Br.M.). The common strand now runs posteriorly, over 
the ventral surface of the genital capsule, and is inserted 
en the inner face of the mantle, just posterior to the 
vertical septum. Possibly this strand affords additional 
support to the genitai gland, when it is enlarged at the 
time of sexual activity, as well as serving to deflect the 
ell. 
FUNNEL. 
This may well be studied along with the mantle 
cavity, as it is closely related thereto. It is a hollow 
- conical structure, truncated anteriorly (Pl. II, fig. 8, /.), 
which is attached to the ventral surface of the head, and 
is free laterally and ventrally, and for about the anterior 
third of its dorsal wall (fig. 11, #.). The anterior and 
external opening of the funnel is about 13mm. in 
diameter, in a large specimen, while the posterior internal 
opening is very much larger and forms the base of the 
cone. At the posterior end, the ventral edge of the 
funnel is recurved, ventrally and anteriorly. This forms 
a ridge, which is more pronounced at the sides than in the 
centre, and forms part of the funnel articulation (PL. pli 
fig. 9a, l.f.r.). The weak locking apparatus is in strong 
contrast with the. firm one found in Sepia, Loligo and 
