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 freslaly 

 caught specimen ; -n,- natural size. Drawn by the author. 



PL.4.TE XXI. 



Figure 1. — Sthenoteuthis megaptera Verrill. Body seen from beneath, J 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 1 6 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, f 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, -^g natural size. 



