MUSEUM OF COMPARATIVE ZOOLOGY. 115 



Fig. l^ The same. One of the suckers, enlarged. 



Fig. 2. Rossia sublevis, var. Verr. ? Dorsal view, natural size. 



Fig. 2*. The same. One of the suckers of the tentacular club, side view, much en- 

 larged. 



Fig. 2*. The same. Edge of the same sucker more enlarged. 



Fig. 3. The same. Ann of third pair, from another female example, enlarged two 

 diameters. 



Fig. 4. The same. Corresponding arm of the male. 



Fig. 5. Hctcrotcuthis tcncra Verr. Dorsal view of male, enlarged two diameters. 



Fig. 5'. The same. One of the larger marginal .suckers of the tentacular club, front 

 view, much enlarged. 



Fig. S*. The same. Portion of the margin of the sucker, more enlarged, to show the 

 scales. 



PLATE IV. 



Fig. 1. Octopus Bairdii, var. Verr. Side view of young' male, enlarged about two 

 diameters. 



Fig. 1*. The same. Terminal appendage of the hectocotylized arm. 



Fig. 2. Octopus lentus Verr. Side view of male, enlarged about two diameters. 



Fig. 3. Octopus ? Portion of an arm, with suckers, from near the base, natural size. 



Fig. 4. Alloposics mollis Yerr. Terminal portion of a mature hectocotylized arm, nat- 

 ural size. 



PLATE V. 



Fig. 1. Elcdone verrucosa sp. nov. Side view of male, natural size. 

 Fig. 1*. The same. Distal portion of the hectocotylized arm, to edge of basal web, 

 showing the terminal appendage and the lateral groove. 



PLATE VI. 

 Fig. 1. Elcdone verrucosa sp. nov. Dorsal view of the male, natural size. 



PLATE VII. 



Fig. 1. Calliteuthis reversa Verr. Ventral view, natural size. 



Fig. 1*. The same. Beak, buccal membranes and base of arms, front view, natiiral 



size. 

 Fig. T". The same. One of the larger suckers from a lateral arm, much enlarged. 

 Fig. 2. Hctcrotcuthis tcncra Verr. Dorsal view of female, enlarged two diameters. 

 Fig. 2*. The same. Tentacular club, enlarged four diameters. 

 Fig. 2''. The same. Pen, enlarged four diameters. 

 Fig. 2°. The same. Jaws, side view, enlarged four diameters ; or., superior ; b, inferior 



mandible. 

 Fig. 2*. The same. Part of the odontophore, much enlarged. 

 Fig. 3. The same. Front view of male, enlarged two diameters. 

 Figs. 3', 3''. The same. Front and side views of one of the suckers of the lateral anna 



of the same specimen. 



