274 DE. J. MTJEIE ON THE OEGANIZATION OF THE CAATNG WHALE. 



steiTio-thyroid and close to the costo-humeralis, with an attachment to the coracoid 

 process. Said to be absent in Balcenoptera rostrata {I. c. p. 218). 



Rapp ' names a costo-humeralis in Phoccena. 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 GlobiocepJmlus, though I have recorded its 

 presence in Lagenorhynchus. 



Cephalo-humeraP roundish and strong-bellied. Origin, paramastoid along with the 

 stemo-mastoid ; directed backwards and downwards parallel with the stemo-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 scapulae', with fascial attachments to the 

 transverse process of the atlas, the neck generally, and to the anterior angle of the 

 shoulder-blade. It differs but triflingly in other Cete, though occasionally relatively 

 stronger. 



A monogastric omo-hyoid obtains in Balcenoptera, 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 claviculse 

 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 Phocmna agree 

 in its being single. I noted in G. rissoanus^" a rhomboideus capitis, or what, indeed, 

 might be a trapezius. 



The seiTatus 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 cartUages; a 

 broader costal and more aponem-otic portion is fixed to the ribs and intercostal spaces, 



' X. c. p. 99, and Stannius, Z. c. p. 16 ; also well sho-sm in Flower'a drawings (infra) of P. communis, besides 

 a pectoralis minor. 



' The humero-mastoideus of Fred. Cuvier (Cyclop, of Anat. <fe Physiol, vol. i. p. 571, fig. 256), the occipito- 

 humeralis of Stannius (1. c. p. 15), and masto-humeral of Carte and Macalist«r (I. c. p. 219). 



' Rapp, p. 88 ; Stannius, p. 13. 



■* CuTier, Lemons, vol. i. p. 375. ' Linn. See. Journ. vol. xi. p. 152. 



' Carte and Maealister, Phil. Trans. 1868, p. 224. 



' MuUer's Archiv, 1849, p. 13. * Anat. Comp. vi. p. 240. 



' Unpuhlished dissection, drawings of which were kindly lent me. 

 '» Journ. of Anat. 1870, p. lo4. 



