242 DR. J. MURIE ON THE ORGANIZATION OF THE CAAING WHALE. 
dorsal fin greater than in the present fig. 1. Moreover a faint depression is given to the 
occipital region, whereas in mine there is a gradual elevation at the same point. The 
depth of the root of the tail is exaggerated; and the pectorals spring quite from the 
abdomen. If his belly view be contrasted with the present dorsal one (fig. 2), it will 
be evident that the thoracic region is flatter than I have found it, the caudal root 
thicker, the terminal emargination wider, and the flukes antero-posteriorly narrower. 
II. Parts RELATED TO THE SENSES. 
1. The Eye and its surroundings.—On first beholding a large Whale, among other 
things which impress strangeness of aspect to this marine mammal is the seemingly 
small organ of vision. The narrow elliptical aperture of which and dull-coloured 
eyeball (at least when the animal is dead and shored) give an odd and sly expression, 
contrasting unfavourably with those lustrous orbs of most Seals, or even with the wide 
optics, though lurid hue, of many great fish. John Hunter’, always philosophical in 
his similes, supposed that their locomotion is not great on this account, and considered 
them as sea soarers compared with birds. 
Situated a little higher than the angle of the mouth, from which its anterior 
canthus was 4 inches distant, the eye of Globiceps, as in all other Cetacea, appears 
extremely diminutive. The palpebral fissure, a narrow ellipse, and without eyelashes, 
has an extreme length of 1}inch. The two eyes are 29} inches apart, as measured 
following the arch of the head. The horizontal dark-coloured pupil is ellipsoidal, 
and ? of an inch in antero-posterior diameter. 
When the tegument is removed, an external muscular sphincter is brought into view. 
This representative of orbicularis palpebrarum is only moderately developed, the fleshy 
fibres being intermingled with fatty tissue. Rapp’ denies the existence of upper fibres 
in the Porpoise; but my observations both in small and large genera coincide with 
Stannius*® and Carte and Macalister as to their oval figure round the orbit. 
In the Globiocephalus killed near Lewchew, the eye is mentioned as having a 
“sclerotic nearly osseous; iris dark, but not red or orange”*. In one of the specimens 
stranded at Dundrum Bay, Gulliver says that “around the eyeball was a firm bony 
plate in the sclerotic coat”’. In the present specimen the sclerotic certainly presented 
a dense fibrous texture, where thickest simulating cartilage in appearance, as in other 
Cete, but no true bone obtained. * 
2. The Nasal Passages: Homology of the Sacs and adjunct Fleshy Structures.—Dr. 
Francis Sibson® has commented “on the Blow-hole of the Porpoise ;’ and (excepting, it 
may be)in the number of muscular layers) my observations on that animal corroborate 
‘ « Observations on the Structure and (iconomy of Whales,” Phil. Trans, 1785, vol. xvi. p. 335. 
* Die Cetaceen zool.-anat. dargestellt, 1837, p. 92. 
* « Beschreibung der Muskeln des Tiimmlers,” Miill. Archiv f. Anat. 1849, p. 11. 
* Chinese Repository, 7. c. p. 411. 5 Dec. p. 66: ® Philos. Trans. 1848, p, 117. 
