156 PROF. OWEN ON NEW AND RARE CEPHALOPODA. 
The outer lip in Sepia palmata is attached to the velum at the interspaces of the 
arms. From that between the first pair a fold extends and expands upon the inner 
border of this circular lip, and develops therefrom a short tentacle, of a bright red 
colour in the recent Cuttle. A similar fold and process extend from the interspace 
between the second and third arms, and from the sheath of the tentacle between the 
third and fourth arms. A pair of similar folds of smaller size and developing shorter 
pointed processes, are continued upon the onter lip from the interspace between the fourth 
pair of arms. The fold of the outer lip developing the pink processes may be regarded 
as a middle lip. The inner circular lip immediately surrounding the mandible has 
a fringed external border. The above characters are shown in Plate XXY. fig. 1. 
The head of Sepia palmata has the usual proportions of the genus, broader than 
long, but here in breadth not quite equalling that of the pallialaperture; it contracts 
to a kind of neck behind the eyes. These (P]. XXIV.) are more dorsal in position than 
in Octopods, are not visible on the ventral surface (Pl. XXV.), on which the Cuttle 
rests and lurks in wait for its prey. The cephalic integument is continued over the 
eye-ball, but becomes transparent opposite the iris, the curtain of which (Pl. XXIV. 7) 
is visible and notable in the present as in other Sepiw. There is a slight fold indicative 
of a lower lid, &; the upper one bears posteriorly three caruncles regularly disposed. 
Anteriorly is the small orifice of the lacrymal sac. 
The dorsal part of the head, between the orbits, shows a depression lodging the 
anterior production, m, of the mid part of the dorsal border of the pallial aperture: 
into this production enters the fore part of the “sepium” (Plates XXIV. & XXV. 
fig. 2). A corresponding depression on the ventral side of the head, between the 
tentacular sacs, lodges the funnel (Pl. XXV. fig. 1, 7). 
The fins, o, 0, produced from the entire side-border of the mantle or body-wall, nearer 
the dorsal than the ventral surface, extend forward in an unusual degree; and continuing 
backward, they round the hinder end of the body, meet, coalesce, and extend beyond 
that part, o’. 
The superior degree of development of these forward-propelling instruments may be 
correlated with the superaddition of the backwardly propelling webs, a, a, in the 
present doubtless very active Cuttle. In connexion with the characteristic hinder pro- 
duction of the fins may be noted the absence of the “ mucro” or pointed terminal apex 
of the “guard” of the reduced and modified belemnitic shell, which mucro usually 
projects, in other species of Sepia, from the notch left at the posterior interval of the there 
separated lateral fins. 
Besides the absence of the mucro, the “sepium” of S. palmata differs from that of 
S. officinalis and most other Cuttles in tapering more gradually to the hind end, in the 
greater proportion of the sheath to the phragmocone, and in the lateral margins of the 
sheath being well definable, and extending beyond the lamellate mass from end to end. 
The dorsal surface of this mass or “‘ phragmocone” has a subtrilobate form (Pl. XXIV. 
