DE. J. MURIE ON THE ORaANIZATION OP THE CAAING WHALE. 275 



from the fourth backwards. Rapp' and Stannius^ note a serratus anticus major in the 

 Porpoise. 



The costal origin of the short, narrow, and thin latissimus dorsi in Glohiceps is from 

 the seventh, sixth, and fifth ribs and spaces, about their middle ; and the insertion is on 

 the inner side of the neck of the humerus by thick fleshy fibres. In the Piked Whale' 

 it appears to come by aponeurotic expansion from the dorsal and some of the lumbar 

 spines. According to Stannius*, its costal attachment in the Porpoise is sixth to fourth 

 ribs. I have noted in the same animal eighth to sixth ; in the White-beaked Bottle- 

 nose', twelfth to sixth. 



The deltoid presents no feature of importance differing from that of Whales generally. 

 Its scapular attachment might be mistaken for a supraspinatus, owing to the altered 

 relation of the fleshy parts by absence of spine. According to my observation [vide 

 fig. 70) the subscapularis covers the entire inner surface of the scapula with a capitular 

 humeral insertion. Macalister's^ younger specimen showed eight tendinous intersec- 

 tions, B. rostrata'' differing in this respect. We agree as to the capsule of the shoulder 

 not being pierced by its tendon, and an absence of bursa. The supraspinatus in G. melas 

 and L. alhirostris answers the description of it in Phocmna and Balwnoptera as given 

 by several authors. The infraspinatus fills the shallow scapular concavity behind the 

 deltoid, its fibres running in an acute angle to those of the latter. 



In Glohiceps, Risso's Grampus, and the White-beaked Bottlenose, I have found but a 

 single teres = teres major and teres minor. In one instance I met with duplicity of 

 these muscles in the Porpoise, though Meckel's', Rapp's^ Stannius's'", and Flower's dis- 

 sections of this animal show it to be more commonly single. Fred. Cuvier's figure" of 

 the shoulder-muscles of the Dolphin demonstrates a teres major and minor. But the 

 former is evidently the infraspinatus, the latter the teres major, and his infraspinatus a 

 portion of the deltoid. Macalister" avers of the young GloMocephalus, "there was no 

 sign of a teres minor or teres major, which are present in Dolphins." A teres major is 

 recorded in the Piked Whale. 



The diminutive triceps has two heads of origin : — one, a narrow slip, from the neck 

 and dorsal surface of the scapular over the teres, and which mingles with the panni- 

 culus ; the other, more tendinous, from the head of the humerus. In the same species 

 [G. melas) Macalister'^ met with only intersecting threads of fibrous tissue devoid of 

 muscularity ; but he and Carte" mention a tricipital division as obtaining in Balcenopfera. 

 Decidedly a triceps is present, but single, in PJwccena, Grampus, and Lagenorkynchus. 



There is in Glohiceps a single, well-developed and fieshy coraco-brachialis, which 



' Cetaceen, pp. 88, 89. ' L. c p. 13. ' L. c. p. 224. * L. c. p. 16. 



' L. c. p. 151. • P. Z. S. 1867, p. 481. ' Phil. Traas. 1868, p. 226. 



' Op. cit. pp. 278 & 262. • Op. cit. p. 90. '" Loe. cit. p. 14. 



" Cyclop, of Anat. & Physiol, vol. i. p. 571, fig. 256. " P. Z. S. 1867, p. 481. 



'= P. Z. S. 1867, p. 481. » Trans. Eoy. See. 1868, p. 227. 



VOL. viii. — PART IV. February, 1873. 2 R 



