114: BULLETIN OF THE 



EXPLAXATION OF PLATES. 



PLATE L 

 Fig. 1. Mastigotetdhis Agassizii {sp. nov.). Dorsal v'icw, slightly enlarged. 



PLATE IL 



Fig. 1. Cheloteuihis rapax Yerr. Club of tentacular arm, front view, enlarged two 



diameters. The horny hooks are lost from the large claws, a, a', a"; 



b, small hooks (or suckers) ; c, suckers ; d, cV, small suckers of distal portion ; 



c c' , connective suckers and tubercles. 

 Fig. 1*. The same. One of the suckers corresponding to c of Fig. 1, front view, much 



enlarged. 

 Fig. l^ The same. A small sucker, corresponding to d of Fig. 1. 

 Fig. 1% 1*. The same. Front and side views of one of the claws, with its enclosed 



horny hook or "nail," from the middle of a lateral arm, enlarged eight 



diameters. 

 Fig. 1*. The same. Connective cartilage from base of mantle, front view, enlarged 



two diameters. 

 Fig. 1'. The same. Beak and pharynx, side view, enlarged two diameters. 

 Fig. 2. Masligoteuthis Agassizii Verr. Front view of the beak, buccal membranes 



(b, d), and bases of the arms, enlarged two diameters. 

 Fig. 3*. The same. Side view of head, siphon, and anterior part of mantle, showing 



the cartilage (c), on the inner surface of the mantle, which interlocks withe' 



on the base of the siphon ; e, the ear ; j9, the aquiferous pore ; s, siphon ; 



t a, base of tentacular arms ; 1, 2, 3, 4, bases of corresponding pairs of 



arms. 

 Fig. 3''. The same. Pen, ventral view, enlarged two diameters. 

 Fig. 3'. The same. Side view. 



Fig; 3*. The same. Portion from near the end of one of the tentacular arms, en- 

 larged sixteen diameters. 

 Fig. 3^ The same. Suckers from the tentacular arm much enlarged : a, side view ; 



a' and a", front views. 

 Fig. 3'. The same. One of the suckers from the middle of a lateral arm, front view, 



much enlarged. 

 Fig. 4. Octopus Bairdii Verr. Portion of odontophore, much enlarged. 

 Fig. 4*. The same. Jaws ; s, superior ; ?, inferior mandibles, enlarged two diameters. 



PLATE 111. 



Fig. 1. Chiroteuthis Bonplandi? One of the tentacular arms, outer side, natural 



size. 

 Fig. 1'. The same. Front view of club, enlarged two diameters. 



