CEPHALOPODA. — BERRY. 



259 



margin of mantle with a broad, conspicuous, dorsal rostrum ; 

 ■ventral margin evenly emarginate below the funnel. Fins 

 long, narrow, their attachment not quite reaching either the 

 tip of the body or the anterior mantle margin, though both 

 these points surpassed by the posterior and anterior lobes 

 of the fins themselves. Funnel large, deeply immersed, its 

 apex reaching some three-quarters of the distance from its 

 hinder margin (or a little better than half-way from the 

 mantle margin) to the cleft between the ventral arms ; interior 

 with a semicircular, flap-like valve ; fvmnel organ indis- 

 tinguishable in specimen examined. 



Head distinctly narrower than body, 

 minent. 



Eyes large, pro- 



Sessile arms rather short ; ventral pair usually distinctly 

 the largest and longest, the others varying, but in general 

 subequal, from one-fourth to one-third the mantle length. 

 Umbrella better developed in some specimens than others, 

 but never extending between arms for more than one-third 

 their length ; absent between 

 ventral pair. Suckers of arms 

 crowded ; ostensibly in four 

 rows, those of the inner series 

 notably larger than the marg- 

 inal ; individual suckers (Fig. 

 48) bowl-shaped, the largest 

 measuring about 1 mm. in 

 maximum diameter, notched 

 above, their outer periphery 

 beautifully fluted ; horny rings 

 swollen, not dentate, but with 

 very weakly crenate margins. 



Fig. iS.Sepia hedleyi ^ [499], 

 one of the larger suckers from 

 right third arm of type ; camera 

 drawing from a mount in balsam. 



Left ventral arm hectocotylized 

 (PI. Ixxii., fig. 6) ; basal 

 third of arm normal, the suckers in 4 series, or better de 

 scribed (as is plainly indicated by the subsequent structure 

 of the arm) as two strongly zig-zag rows, with the inwardly 

 displaced members distinctly larger than the outer ones, much 

 as already noted for the suckers of the remaining arms ; 

 according to this interpretation, the dorsal of the two basal- 

 most suckers inwardly displaced, the ventral outwardly, both 

 being relatively small like the succeeding marginal suckers ; 

 suckers thence regularly zigzagging as described until 11 

 pairs are accounted for, the flattened sucker-bearing area 



