484. TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
definitely marked off, but merge gradually into one 
another. When touched with the hand, the body feels 
soft and slimy and of about the consistency of a firm jelly. 
The flesh retains its elasticity for some hours after death. 
The following are the dimensions of a probably full-grown 
Kledone, immediately after death : — 
Length of arm ... sa bie ... OO mm: 
Length of visceral dome Ash ws) EGO stam: 
Length of head a ae a. “38 anam 
Total length ... a a J. 008 mm 
Width of head ... on, se Sea 
Width of body at widest part ... 140mm. 
(A, Cephalopedal Mass.—This mass, which forms the 
greater part of the body of Eledone, as regards length, 
consists, as the name implies, of the head and foot. 
(1) Head.—The head is a solid oval mass, behind the 
arms and anterior to the visceral dome. The anterior part 
or buccal mass is hidden away inside the bases of the 
arms, and hence only the posterior portion shows 
externally. Laterally it bears the eyes, while the central 
portion consists of the muscles which cover the brain 
cartilage, ventrally and dorsally. To the ventral surface 
of the head is attached the funnel (Pl. III, fig. 11, Ff). 
Cephahec Cartilage.—It 1s convenient to describe the 
structure of the Cephalic and Orbital Cartilage here. 
They are both built up of oval cells surrounded bg a clear 
matrix (Pl. VI, fig. 66a, C. cell and Matr.). These cells 
have large oval nuclei, and are connected by fine 
cytoplasmic processes one with another. Hence the 
spaces occupied by the cartilage cells also intereommuni- 
cate by canals down which these cell processes run. 
(2) The Foot is divided into eight equal muscular 
processes, or arms. In the female these are all similar, 
but in the male the third right arm is hectocotylised— 
