NOTES ON A GIGANTIC CEPHALOPOD. 43 



only 4-6 on each ring. The margin of the ring on the lower side was 

 smooth, without any teeth. 



Suckers were very adhesive. Laying an arm Hat on a surface with 

 suckers downwards was enough to make it suck on to the surface, 

 almost without any application of pressure. 



Menihrane along Edr/cf^ of Anns : One strikiug feature of the 

 arms was the free-edged membrane which fringed the dorsal and ventral 

 edges of the inner surface of each arm, i.e., the edges of the face on 

 which the suckers were placed. It stretched continuously from the 

 base to the tip of the arm and was broadest in the proximal part. It 

 measured about 1 c/n. in the broadest part. The muscular tubercle 

 from which the peduncle of each sucker arose, sent from its proximal 

 and distal ends outwards into this membrane two muscular ridges which 

 slightly diverged from each other as they proceeded towards the free 

 edge. The membrane thus appeared crossed by many ridges. The 

 membrane was well developed 0)i the dorsal tliree j^rirs of arms, but 

 was hardly noticeable on the fourth (ventral) — another point of contrast 

 between this and other ]3airs. 



The Tentacular Arms were very long, slender and non- 

 retractile. That of the left side was injured. The rlgJit tentacle was 

 perfect and measured 291 on. {3j times as long as the head aud body 

 together). The club at its tip (Fig. 8) measured 87 cni. and was not 

 very broad being in its widest part about 8 cm. after being placed in 

 alcohol. The club was furnished with a free-edged membrane like that 

 on the edges of the other arms, not as wide however, but similarly 

 crossed Ijy ridges from the bases of the suckers forming the outermost 

 row on each side. The club was provided in its middle portion with 

 four alternating rows of suckers. Of these the two middle were com- 

 posed of very large suckers supported on peduncles thicker and shorter 

 than those of the sessile arms. These large suckers were not as oblique 

 as those on the sessile arms, and their horny rings were, therefore, 

 coextensive with their tops and not less in diameter as is the case in 

 the sessile arms. Of the two middle rows of large suckers, the ventral 



