[237] CEPHALOPODS OF NORTHEASTERN COAST OF AMERICA. 447 



Plate XXXIII. 



Figure 1. — Heteroteuthis tenera Verrill. Front view of male ; enlarged 2 diameters. 

 Figures la, 16. — The same. Front and side views of one of the larger suckers of the 



lateral arms of the same specimen; more enlarged. 

 Figure 2. — The same. Jaws, side view; enlarged 4 diameters; a, superior; 6, inferior 



mandible. 

 Figure 2a. — The same. Tentacular club ; enlarged 5 diameters. 

 Figure 26.— The same. Pen; enlarged 6 diameters. 

 Figure 2c. — The same. Part of the radula; much enlarged. 

 Figure 2d. — The same. Part of the radula; more enlarged. 

 Figure 3. — The same. Dorsal view of a male; enlarged 2 diameters. 

 Figure 3a. — The same. One of the larger marginal suckers of the tentacular club, 



front view ; much enlarged. 

 Figure 36. — The same. Portion of the margin of the sucker, more enlarged, to show 



the scales. 



Plate XXXIV. 



Figure 1. — Heteroteuthis tenera Verrill. Dorsal view of female; enlarged 2 diameters. 



Figure la. — The same. A group of eggs; enlarged 2 diameters. 



Figure 2. — Bossia sublevis Verrill. $. Dorsal view; natural size. 



Figure 2a. — The same. One of the suckers of the tentacular club, side view ; much en- 

 larged. 



Figure 26. — The same. Marginal scales on the edge of the same sucker; more en- 

 larged. 



Figure 3. — The same. Pen, ventral view ; enlarged 6 diameters. 



Figure 4. — The same. Ventral view ; enlarged 1£ diameters. 



Figure 5. — The same. One of the arms of the third pair, from another female ex- 

 ample ; enlarged 3 diameters. 



Figure 6. — The same. Corresponding arm of the male; enlarged 3 diameters. 



Plate XXXV. 



Figure I. — Histioteuthis Collinsii Verrill. One of the largest median suckers of the 



tentacular club; side view; enlarged 4 diameters. 

 Figure la. — The same. One of the suckers from next to the outer row, of the same 



club; enlarged 4 diameters. 

 Figure 2. — Rossia Hyatti Verrill. Side view of young male; enlarged 1£ diameters; 



from life. 

 Figure 3. — Rossia ir,egaptera Verrill. Female ; dorsal view ; natural size. 

 Figure 4. — The same. Suckers ; enlarged 22 diameters ; a, front view of one of the 



largest from the third pair of arms ; 6, c, d, three suckers from the tentacular club. 

 Figure 5. — Rossia Hyatti Verrill. Egg containing an embryo; enlarged 6 diameters. 



The shaded portion represents the yolk still remaining unabsorbed. 

 Figure 6. — The same. Pen ; enlarged 6 diameters. 



Plate XXXVI. 



Figure 1. — Stoloteuthis leucoptera Verrill. Male; from a specimen taken in 18*9; en- 

 larged 1£ diameters. 



Figure la. — The same specimen. Male ; upper lateral arm, showing the greatly en- 

 larged, middle suckers ; enlarged 4 diameters. 



Figure 2. — The same. Young female ; ventral view ; enlarged 3 diameters. 



Figure 3. — Rossia Hyatti Verrill. A young specimeu ; enlarged If diameters. 



Figure 4. — The same. Adult female; dorsal view ; enlarged If diameters. 



Figure 5. — The same. Female; suckers; enlarged 22 diameters ; a, one of the largest 

 from third pair of arms, side view ; 6, c, two forms of suckers from the tentacular 

 club. 



Figure 6. — The same. Lateral arm of a male ; enlarged 3 diameters. 



