DR. J. MURIE ON THE ORGANIZATION OF THE CAAING WHALE. 265 
differentiate in B. rostrata as superficial hyo-keratic, deep hyo-keratic, and kerato- 
pharyngeus’. 
Under the title of occipito-thyroideus, Stannius’ has called attention to a partially 
separate slip of muscle adjoining the preceding. He says that in the Porpoise it arises 
along and from the sharp borders of the exoccipital, and is inserted on the side of the 
thyroid cartilage and angle towards the epiglottis. In Glodiceps there is a muscle 
corresponding to this, but partially with a thyrohyal attachment. Macalister® desig- 
nates it basio-thyro-hyoid, and believes it to be an expanded representative of the 
cephalo-pharyngeus of Theile. 
2. Lracheo-pulmonary parts.—The short trachea bifurcates into short, right and left 
bronchi, about the top of the upper third of the pulmonary organs; and there is a 
tertiary bronchus to the right. In this respect Glodiceps agrees with such Cetacea as 
have been dissected, save Balena mysticetus. 
The lungs, when taken out of the chest, were collapsed, and contained apparently but 
a very small amount of residual air. This gave them the reverse of a crepitant character, 
viz. a lax spongy kind of texture under pressure. Moreover their pleural covering is 
such a strong, tough, fibrous envelope, that they acquire marginally an almost leathery 
consistence. Having inflated the lungs, on their removal en masse with the heart 
(reproduced in the sketch, fig. 49), their shape and another most remarkable peculiarity 
were fully disclosed. Each lung is elongate and, strictly speaking, unilobed. But there 
is a small anterior or apical emargination or wide shallow cleft which tends to mark 
off an isthmus or indefinite tongue-shaped corner. ‘This lobule, if one may so term it, 
passes sternally inwards, towards its fellow of the opposite side, at the root of the heart. 
The area enclosing the heart, great vessels at its root, and the pericardium, is neces- 
sarily large ; but the basal surface of the lungs, or that fitting upon the diaphragm, is 
likewise relatively enormous. This diaphragmatic superficies is dome-shaped, and 
doubtless is chiefly intended to receive the capacious compound stomach when dis- 
tended. At the superficial diaphragmatic end the two lungs are connected by a bridge 
of pleural membrane, which is also fastened to the diaphragm. I ascertained the length 
of the lungs to be, right 23, and the left 25 inches. 
In the Chinese Globiceps it is stated “ the lungs have two lobes on each side—the two 
central lobes are broad, flat, and thin, but as long as the lateral lobes, and both are well 
supplied with bronchia”*. A thoroughly cleft and compound lung is certainly an 
unusual condition in Cetacea; but I conjecture from Dr. Williams’s allusion to the 
longitudinal nature of the lobes, that he but means the long, thinner, free approximate 
margins partially covering the heart &c. 
The most interesting feature connected with the pulmonary parts of the Caaing 
Whale is the presence of a pair, or more, of large lymphatic glands most prominently 
* Loe. cit. p. 235, and pl. 6. figs. 3h, 18, and f. ? Loc. cit. p. 9. 
* Papers cited. * Repository already cited, p. 412. 
