[229] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 439 



Figure 3. — Architeuthis monachus Steenstrup (Type specimen). Lower mandible; natu- 

 ral size. After Steenstrup. 



Figure 4. — Enoploteuthis Hartingii Verrill. Anterior portion of jaws ; natural size. 

 After Harting. 



Figure 5. — Moroteuthis robusta Verrill. Section of the solid, terminal cone of the pen ; 

 natural size. 



Plate XIII. 



Figure 1. — Moroteuthis robusta (Ball) V. Side view of one of the specimens, as found 

 on the beach ; £& natural size. 



Figure 2. — The same. Dorsal view. The dotted lines indicate portions of the arms 

 that had been destroyed ; £- s natural size. 



Figure 3. — The same. Side view of the head and siphon, with the anterior part of 

 the mantle, cut open ; e, the eye ; s, siphon ; o, o', o", the three nuchal olfactory 

 crests ; c, c', c", the connective cartilages attaching the mantle to the neck ; c, late- 

 ral cartilage of mantle ; c', lateral cartilage at base of siphon ; c", dorsal cartilage 

 of neck; m, m', cut edge of mantle. 



Figure 4. — The same. The entire dorsal 'pen'; side view; ^ natural size. 



Figure 5. — The same. Ventral view. 



Figure 6. — The same. A portion from the middle of the ' pen', less reduced. 



All the figures were made from the fresh specimens by Mr. \V. H. Dall. 



Plate XIV. 



Figure 1. — Moroteuthis robusta (Dall) Verrill. Odontophore ; side view; enlarged 3f 

 diameters. 



Figure 2. — The same. Part of a row of the teeth from near the anterior bend of 

 the odontophore; enlarged 22 diameters; a, median tootb, front view; a', side 

 view of same ; b, first lateral ; b', the same, side view ; c, second lateral, front 

 view ; d, outer lateral, front view. 



Figure 3. — The same. One of the inner lateral teeth, side view ; enlarged 54 diameters. 



Figure 4. — The same. Median tooth, side view ; enlarged 54 diameters. 



Figure 5. — The same. Upper mandible, natural size. 



Figure 6. — The same. Lower mandible, natural size. 



Figure 7. — The same. Anterior end of terminal cone, showing a portion of the post- 

 erior end of the 'pen' inserted into it; £ natural size. 



Figure 8. — The same. Section of a ventral arm, close to the base ; natural size ; a', 

 one of the suckers, side view ; b and b', marginal membranes ; c, crest or mem- 

 brane along outer angle; e, median vein, near inner surface. 



Figures 1 to 4 are camera-drawings by the author; the rest are by J. H. Emerton. 



Plate XV. 



Figure 1. — Lestoteuthis Fabricii Verrill. Young. Pen ; enlarged 2 diameters. Copied 

 from G. O. Sars as Gonatus amccnus. 



Figure la. — The same. Part of odontophore. Copied from G. O. Sars. 



Figure lb. — The same. Portion of tentacular club, front view ; enlarged. Copied 

 from G. O. Sars. 



Figure 2. — The same. Young. General figure, dorsal view ; enlarged 2 diameters 

 From an American example. 



Figures 2a, 2b. — The same. Front and side views of one of the suckers from the outei 

 rows of a lateral arm of the same specimen. 



Figures 2c, 2d. — The same. Front and side views of a hook-sucker from the median 

 rows of the same arm. 



Figure 3. — Lestoteuthis Fabricii Verrill (Cheloteuthis rapax). Club of tentacular arm, . 

 front view ; enlarged 2 diameters. The horny hooks are lost from the claws a, a', 

 a" ; b, c, small lateral suckers; d, d', small suckers of distal portion; e, e', connec- 

 tive suckers and tubercles. 



