274 DR. J. MURIE ON THE ORGANIZATION OF THE CAAING WHALE. 
sterno-thyroid and close to the costo-humeralis, with an attachment to the coracoid 
process. Said to be absent in Balenoptera rostrata (1. ¢. p. 218). 
Rapp' names a costo-humeralis in Phocena. This is short, fleshy, and passes from 
the posterior border of the first rib-cartilage to the inner side of the humeral tubercle. 
It goes under the insertion of the scalenus anticus, where it mingles with fibres of the 
pectoralis minor. I did not observe this in Glodiocephalus, though I have recorded its 
presence in Lagenorhynchus. 
Cephalo-humeral? roundish and strong-bellied. Origin, paramastoid along with the 
sterno-mastoid; directed backwards and downwards parallel with the sterno-mastoid 
for part of its course, it is inserted by a strong tendon into the anterior surface of the 
head of the humerus. 
I recognize a diminutive levator anguli scapule*, with fascial attachments to the 
transverse process of the atlas, the neck generally, and to the anterjor angle of the 
shoulder-blade. It differs but triflingly in other Cete, though occasionally relatively 
stronger, 
A monogastric omo-hyoid obtains in Balenoptera, which if differentiated in other 
genera has been overlooked by me. 
Though wanting a clavicle, yet I consider there is a homologue of a levator claviculz 
in G. melas. This I found broad, flat, and chiefly composed of tendinous fibres, which 
radiately arise upon the supra- and infrascapular muscles, and, rather more muscularly, 
are inserted into the transverse process of the atlas. It lies between the parotid gland 
and the transversalis cervicis muscle (vide fig. 63, L.cl). 
There is but a single rhomboideus, as obtains in the Dolphin‘, Lagenorhynchus*, and 
B. rostrata®. Stannius’? mentions two, rhomboideus superior and rhomboideus inferior, 
in the Porpoise; but Meckel’s*, Flower’s’, and my own observations on Phocena agree 
in its being single. I noted in G. rissoanus” a rhomboideus capitis, or what, indeed, 
might be a trapezius. 
The serratus magnus has an attachment to the altoid transverse process, covers the 
side of the neck, and broadening posteriorly is fixed to the scapula. A narrow portion, 
moreover, digitally descends to the second and third ribs close to the cartilages; a 
broader costal and more aponeurotic portion is fixed to the ribs and intercostal spaces, 
1 L.c. p. 99, and Stannius, 7. ¢c. p. 16; also well shown in Flower’s drawings (infra) of P. communis, besides 
a pectoralis minor. 
* The humero-mastoideus of Fréd. Cuvier (Cyclop. of Anat. & Physiol. vol. i. p. 571, fig. 256), the occipito- 
humeralis of Stannius (/. c. p. 15), and masto-humeral of Carte and Macalister (J. c. p. 219). 
3 Rapp, p. 88; Stannius, p. 13. 
* Cuvier, Lecons, yol. i. p. 375. § Linn. Soe. Journ. vol. xi. p. 152. 
® Carte and Macalister, Phil. Trans. 1868, p. 224. 
7 Muller’s Archiv, 1849, p. 13. 8 Anat. Comp. vi. p. 240. 
® Unpublished dissection, drawings of which were kindly lent me. 
20 Journ. of Anat. 1870, p. 154. 
