2 56 
PLATE XVIII. 
Figure 1.—Architeuthis princeps V. (No. 10). Upper jaw, natural size. 
Figure 2.—The same. Lower jaw; the dotted line shows the parts that are present 
on the opposite side. 
Figure 3.—<Architeuthis princeps (No. 1). Part of lower jaw, natural size. 
Figures 1 and 2 were drawn by the author; figure 3 by J. H. Emerton. 
PLATE XIX. 
Figure 1.—Architeuthis princeps V. (No. 14). Caudal fin from beneath; from the 
specimen a few days after it had been placed in alcohol. 
Figure 2.—The same specimen, after it had been preserved several months in strong 
alcohol. 
Figure 1 was drawn by J. B. Holder, M.D.; figure 2, by the author. 
PLATE XX. 
Architeuthis princeps V. (No. 14). General figure; from the recently preserved speci- 
men; restored, in part, in accordance with the measurements of the freshly 
caught specimen; ;/; natural size. Drawn by the author. 
PLATE XXI. 
Figure 1.—<Sthenoteuthis megaptera Verrill. Body seen from beneath, 4 natural 
size; from the alcoholic specimen. 
Figure 2—The same. Part of the membrane lining the palate, enlarged 8 diameters ; 
a, and 6, from different places. 
Figure 3.—The same. A single row of teeth from the odontophore, enlarged 8 
diameters. 
Figure 4.—The same. ‘Teeth from the odontophore, enlarged 16 diameters; a, two 
median teeth; 6, inner lateral teeth; c and d, teeth of the two outer lateral rows. 
Figure 5.—The same. Two of the outer lateral teeth, profile-view, enlarged 16 
diameters. 
Figure 6.—The same. Several lateral teeth in their natural sequence, enlarged 16 
diameters. 
Figure 7.—The same. Two of the next to the outer lateral teeth, enlarged 16 
diameters. 
Figures 8 and 8*.—The same. Twenty-second sucker from the ventral arm; front 
and side-views, enlarged 3 diameters. 
Figure 9.—The same. One of the largest suckers from the club of the tentacular- 
arm; front view, enlarged 3 diameters. 
Figures 8, 8° and 9 are by J. H. Emerton; the others by the author; 2 to 7 are 
camera-drawings. 
PLATE XXII. 
Histioteuthis Collinsii Verrill. Side-view of the head and arms; from the preserved 
specimen, + natural size. Drawn by J. H. Emerton. 
PLATE XXIII. 
Figure 1.— Onychoteuthis robusta (Dall). Side-view of one of the specimens, as found 
on the beach, 3; natural size. 
