114 
Ap F 
; de 
BULLETIN OF THE 
EXPLANATION OF PLATES. 
PLATE I. 
Mastigoteuthis Agassizii (sp. nov.). Dorsal view, slightly enlarged. 
PLATE II. 
Cheloteuthis rapaz Verr. 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, d’, small suckers of distal portion ; 
€ e”, connective suckers and tubercles, 
Fig. 1% The same. One of the suckers corresponding to c of Fig. 1, front view, much 
Le] 4 o o , > 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
15 
1o 
1,5 
1 
1123 
2. 
g. 30, 
9^, 
s 
34, 
o 
09, 
38, 
. 4. 
4°, 
bin 
MUS 
enlarged. 
The same. A small sucker, corresponding to d of 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. 
The same. Connective cartilage from base of mantle, front view, enlarged 
two diameters. 
The same. Beak and pharynx, side view, enlarged two diameters. 
Mastigoteuthis Agassizt 
i Verr. Front view of the beak, buccal membranes 
(b, d), and bases of the arms, enlarged two diameters. 
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 with e! 
on the base of the siphon ; e, the ear; p, the aquiferous pore ; s, siphon ; 
t a, base of tentacular arms; 1, 2, 8, 4, ba 
s of corresponding pairs of 
arms, 
The same. Pen, ventral view, enlarged two diameters. 
The same. Side view. 
The same. Portion from near the end of one of the tentacular arms, en- 
larged sixteen diameters. 
The same. Suckers from the tentacular arm much enlarged : a, side view ; 
a” and a”, front views. 
The same. One of the suckers from the middle of a lateral arm, front view, 
much enlarged. 
Octopus Bairdii Verr, Portion of odontophore, much enlarged. 
The same. Jaws; s, superior ; 7, inferior mandibles, enlarged two diameters. 
PLATE III. 
Chiroteuthis Bonplandi? One of the tentaeular arms, outer side, natural 
size. 
Tho same. Front view of club, enlarged two diameters. 
