438 A. JS. Verrill — North American Cephulopods. 



Figure 3. — Rossia suhlevis. Ventral view, enlarged 1-^ diameters. 



Eigure 4. — Stoloteuthis leucoptera Verrill. Female. Young, ventral view, enlarged 3 



diameters. 

 Figure 5. — The same. Male. A larger specimen, taken in 1879, enlarged 1-^ diameters. 



Plate XXXII. 



Figure 1. — Stauroteutliis syrtensis V. Dorsal view, ,^7 natural size. 

 Figure 2.— The same. Lower side of head; s, siphon; e, eye; «, the auditory pore. 

 Figure 3. — The same. The siphon, turned back. 



Figures 4 and 5. — The same. Superior and inferior mandibles, enlarged 2| diameters. 

 This plate was drawn by the author, from the alcoholic specimen, except figs. 4 and 

 5, which are by J. H. Emerton. 



Plate XXXIII. 



Figure 1. — Octopus Bairdii A^errill. Male. Ventral view, natural size; h, terminal 



organ of the hectocotylized arm ; i, the groove along the lower side of the arm. 

 Figure In. — The same specimen. Hectocotylized arm, enlarged two diameters. 

 Figure 2. — Parasira catenulata Steenst. Female. Front view, J natural size. 

 Figure 2a. — The same specimen. Side view, \ natural size. 



Plate XXXIV. 



Figure 1. — Loligo Pealei^ var. pallida V. Male. Dorsal view, about ^ natural size. 



Figure 2. — The same. Pen, about -i natural size. 



Figure 3. — The same. Portion ot radula, much enlarged. 



Figure 4. — The same. Upper mandible: a, rostrum or tip of the beak; &, the notch; 



c, the inner end of ala ; d, the frontal lamina; e, the palatine lamina; a&, the 

 cutting edge of beak ; &c, anterior or cutting edge of ala. 



Figure 4a. — Lower mandible : a, rostrum; ah, cutting edge; &c, anterior edge of ala ; 



d, mentum or chin ; e, gular lamina. 



Figure 5. — Octopus Bairdii V. Young male. Side-view from a living specimen, 



nearly natuT'al size. 

 Figure 6. — The same. Dorsal view, from life, nearly natural size. 



Figs. 3, 4, 4a, were drawn by the author ; the others by .J. H. Emerton. 



Plate XXXV. 

 Figure 1. — Octopus leutus V. Female. Original specimen. Ventral view, f natural 



size. 

 Figure 2. — The same specimen. Dorsal view, 3 natural size. 



Plate XXXVI. 



Figure 1. — Octopus piscatorum V. Female. Original type. Ventral view, | nat- 

 ural size. 



Figure 2. — The same specimen. Dorsal view. 



Figure 3.— Octopus ohesus V. Male. Original type. Basal portion of one of the 

 lateral arms, to show the arrangement of suckers, natural size. 



Figure 4. — The same specimen. Terminal portion of the hectocotylized arm, en- 

 larged l^ diameters. 



Figure 5.—Sthenote2dhis pte'^opus V., from Bermuda. Female. Anterior end of 

 pen, natural size. 



