486 EXPLANATION OF THE PLATES OF ANIMALS. 



arm with suckers, much magnified ; 2. d. its pen. (Both the pre- 

 ceding species were drawn from the living animal.) 3. a. outline 

 of Sepiola Rondeletii, from a British specimen, taken by Mr. Alder, 

 and preserved in spirits ; 3. b. one of the arms ; 3. c. termination 

 of one of the lower arms, showing the peculiar arrangement of the 

 suckers ; 3. d. its pen. 



Plate NNN. — 1. Rossia nuMrosoma, from an Irish specimen, in spirits, 

 in the Museum to Trinity College, Dublin ; presented by Dr. R. 

 Ball. (The reference in the text is misprinted MMM. fig. 1.) 

 2. Octopus vulgaris, after the figure of a British specimen, by 

 Sowerby. 



Plate 000. — Sepia officinalis; drawn from life by Mr. Bailey ; the 

 specimen was taken by Mr. Mackie, off Folkestone. 



Plate PPP. — 1. a. Under surface of the "bone" or shell of Sepia 

 officinalis; 1. b. side view; 1. c. lower part of back of the same. 

 2. a. under side of shell of Sepia hisserialis ; 2. b. upper side ; 

 2. c. side view; from drawings by Mr. Alder of a British specimen. 



Plate QQQ. — l.a. Loligo media, dorsal surface; 1. b. another speci- 

 men, ventral surface ; and 1. c. the pen. Drawn from the life by 

 Mr. Alder. 2. a. Loligo inarmorce; and 2. b. its pen. From an 

 Irish specimen taken by Dr. Robert Ball, and preserved in the 

 Museum of Trinity College, Dublin. 



Plate RRR. — 1. Ommastrephes sagittatus; drawn by E. F. from a living 

 specimen obtained by the Marchioness of Hastings, off Brighton. 

 2. Ommastrephes todarus ; from a drawing by Mr. Alder, of a 

 British example. 



Plate SSS. — 1. Rossia Owenii. 2. Ommastrephes Ehlance ; botli from 

 Irish specimens, taken by Dr. Robert Ball, and preserved in the 

 Museum of Trinity College, Dublin. 



LONDON: 



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