EXPLANATION OF THE PLATES. 



Plate XIII. 



Figure 1. — Architeuthis Harveyi (No. 5). Head and arms, y natural size, from a photo- 

 graph of the specimen when freshly caught. The back of the head rests upon an 

 oar so as to cause the beak to protrude, while the arms hang down in a reversed 

 position. The diameter of the bathing tub was 38'5 inches: a, left, and a' right 

 ventral arms; 6, left, and h' right arms of the third pair; c, left, and c', right 

 arms of the second pair ; d\ right dorsal arm, mostly concealed behind the others ; 

 e, left and e', right tentacular-arms, folded several times over the oar ; i to iv, the 

 ' club' ; i to ii, the ' wrist' ; ii to in, the part bearing large suckers ; Hi to iv, the 

 terminal division ; o, the beak. 



Figure 2. — Part of the body and caudal fin of the same specimen, ^ natural size, from 

 a photograph made at the same time with the preceding ; «, mantle cut open ; 

 <, tip of tail ; i, right and ?, left lateral lobes of caudal fin. 



Plate XIV. 



Figure 1. — Architeuthis Harveyi. A restoration, -.^-^ natural size, based on the preced- 

 ing figures and on the specimens received. (See note, p. 184). 



Plate XV. 

 Figure 1. — Architeuthis Harveyi (No. 5). Upper mandible, natural size. 

 Figure 2. — Lower mandible of same, natural size ; lacks a small piece at a. 

 Figure 3. — Anterior part of the ' pen ' of the same specimen, i natural size. The 



dotted lines indicate missing parts. (Restored and drawn by the author). 

 Figures 1 and 2 were drawn by Mr. J. H. Blake, from alcoholic specimens. 



Plate XVI. 

 Figure 1. — A. Harveyi (No. 5). Portion of the hning membrane of the palate, 



enlarged. 

 Figure 2. — A. Harveyi (No. 5). Caudal fin, -.V natural size, drawn from the preserved 



specimen. 

 Figure 3. — A. Harveyi (No. 5). Suckers of tentacular-arm, natural size ; a, one of the 



largest suckers ; h, one of the marginal suckers. 

 Figure 4. — The same. Horny marginal ring of one of the suckers from a sessile arm, 



enlarged 2 diameters. 

 Figure 5. — A. Harveyi (No. 4). One of the larger suckers from the tentacular-arms, 



natural size. From a dried specimen. 

 Figure 6. — Portion of the marginal ring of the satne sucker, enlarged. 

 Figure 7. — Loligo pallida V. Part of odontophore. much enlarged. 

 Figure 8. — Architeuthis Hartingii V. Part of odontophore. enlarged. Copied from 



Harting's figures. 

 Figures 5 and 6 were drawn by J. II. Emertou ; the rest by the author. 



