iw; . i. \- EON. 



Fins oval, dorsal. ( Jladius lancet-form, only half as Ion- as tin-body, 

 margins thickened. First left arm hectocotylized. 



R<SIA. Generally like Xfju'ttla, but the mantle is supported cervically 

 by a ridge ; arms with two or four rows of .-essile suc-kers. First left 

 arm and middle of lii>t right ai-in liectocot ylized. Shell lancet form, 

 small. 



Family VI. CRANCHIID^E. 



( KAN< HIA. Character.^ generally those of the family. Body short, 

 rounded; tins very small, rounded, terminal; buecal membrane pro- 

 duce* 1 into eight lobes : arms short, with two rows of suckers ; tentacu- 

 lar clubs tinned behind, with suckers in eight rows. Siphon valved. 



Body long, attenuated behind, with large fins ; siphon not 



Family VII. 



I'liiuoTEUTHis. Body long, attenuated : arms long, connected by a short 

 basal web, with two rows of small, long-pedunculated suckers; ten- 

 tacles very long and narrow, covered their whole length with scattered 

 -uckers, the clubs with four rows of long-pedunenlated suckers. IVn 

 slender in the middle, slightly winged at each end. 



HiSTioTKi'Tins. Uody short, cylindrical; head long; arms long, the 

 three superior pairs comiecied by a largely developed \\eb.tbeventral 

 paii- free ; tentacles long, with six r<>\\ s of dcntated cups on their clubs; 

 buccal membrane si\-lobed. Pen short and broad. 



Family VIII. TI I VSA XOTKUTI 1 1 IKK. 



TIIYSANMTKUTHIS. Body ^ vit]l 1;l ',^' trian-ular tins the whole length of 

 !i side; arms with lateral expansion of the skin, and two ro\v- !' 

 I'cilunculated snekei-s. from which siring threads which are connate 

 with the surface of the lateral expansions. Shell tile-shaped. 



oily IX. ONYC'HOTKrTIIID.K. 



\ n;s. Body lil . anus thick, with foui- rows of small suck- 



: tentacular club-, N\ith many row- of small suckers, and a single 

 larue ba-al cup armed with a hook ; siphon not connected to the head, 

 without valve. < Radius lancet-form. 



Of. Arms with t u o row> of >ucker-, the rings of which 



ii'. I toothed; tentacles ihick, their clubs with two rows of >troug 



hooks, and at the l>a-e a rounded -roiip of suckers, with which they are 



rappoeed to unite the two tentacles, and use them in conjunction as a 



iren-'th is rei|uiredin -apt uring their ]>rey. 

 u> lance) -form, witli a conical coininenceir 



