Architeuthus.] CEPHALOPODA. 1051 



The teeth of the radula are in 7 rows, with on each side a marginal 

 row of thin unarmed plates. The teeth are light-horn colour, but 

 become darker in spirit. Those of the median line have 3 fangs, all 

 truncate, the centre one much the largest, the laterals are slightly 

 turned outwards ; those of the submedian line have 2 fangs, the 

 inner one being the largest and turned towards the median tooth, 

 while the outer one is slightly inclined towards its sublateral neigh- 

 bour. The teeth of the sublateral line are acute, stout, and much 

 curved towards the submedian. The laterals are slighter than the 

 last, acute, and also curved inwards. 



Measurements. Total length (including tentacular arms), 684 in. : 

 body from tip of tail to anterior margin of mantle. 71 in. ; cir- 

 cumference 1 ft. from anterior margin, 54 in. ; circumference at 

 centre, 63 in. ; circumference immediately in front of fin, 45 in. : 

 head from anterior margin of mantle to root of arms, 22 in. ; cir- 

 cumference, 32 in. : eye-socket -long, 5| in. ; deep, 3^ in. : fins- 

 longitudinal, 24 in. ; transverse, 28 in. : "tail," 4 in. : tentacular 

 arm length 591 in. ; circumference, 3fin. : sessile arms first. 

 59 in. ; second, 62 in. ; third, 68 in. ; third, circumference. 12 in. ; 

 fourth. 95 in. : length of upper mandible, tip to end of palatine lamina, 

 4/o in. : length, tip to end of frontal lamina, 2^ in. : cutting-edge 

 of rostrum, f i n . : cutting-edge of ala, ij in. : tip to lateral border 

 of frontal lamina, l^ in. : lower mandible- tip to border of mentum, 

 I%% in. ; tip to lateral border of ala. 1^-f, in. ; height of tooth, -^ in. 

 (f. W. Kirk.) 



Hob. Lyall Bay, Cook Strait. 



3. Architeuthus Stockii, T. W. Kirk, 1882. Plate 65, fig, 1. 



Steenstrupia Stockii, T. W. Kirk, T.N.Z.I., xiv, 1881 (1882), 28(3, pi. 3, 

 f . 2-4 ; Index, 58. 



Body long, slender, almost a cylinder, but very slightly swollen 

 in the middle. Head long and narrow, sides nearly straight. Eyes 

 large, and furnished with a lid. Sessile arms small, all same length 

 and size ; suckers 36 on each arm, arranged in 2 equal rows, each 

 sucker strengthened by a bony ring, armed with from 40 to 60 sharp 

 incurved teeth. Tentacular arms slight ; these were torn off at length 

 of 6 ft. 2 in. ; no trace of suckers or tubercles on remaining portions. 



Fin rhomboidal, posterior, lateral. Internal shell lanceolate, fur- 

 nished anteriorly with 2 lengthened wing-like expansions similar to 

 those at anterior of shell of Sepia, and a hollow conical apex 1 J in. 

 deep. 



Measurements. Total length of body and head, 11 ft. 1 in. ; length 

 of body, 9ft. 2 in. ; length of head, 1ft. 11 in. ; greatest circum- 

 ference. 7 ft. 2 in. ; circumference of head, 4 ft. ; length of sessile 

 arms, 4ft. Sin. ; circumference of sessile arms, 11 ft. ; length of in- 

 ternal shell, 6ft. 3 in. ; width (greatest), 11 ft. (T. W. Kirk.) 



Hab. Lyall Bay, Cook Strait. 



