300 BR. J. MUME ON THE OEGANIZATION OP THE CAAING WHALE. 



PLATE XXXVII. 



Fig. 63. Body in profile, exhibiting the myology &c. when the panniculus has been 

 taken away. The right moiety of the rostral blubber remains in place. 



Letters other than those used in fig. 58 are : — L.d, longissimus dorsi, +L.c.e, levator 

 caudffi externus; Sp.d, spinalis dorsi, +L.c.i, lev. caud. intemus; S.cd, supracaudal; 

 Led, infracaudal; S.l, sacrolumbalis ; S.vig, serratus magnus; Hh, rhomboideus ; 

 C.a, cervicalis ascendens; L.a.s, levator anguli scapulae: T.c, transversalis cervicis; 

 Sp, splenius ; I.sj), infraspinatus ; L.cl, levator claviculse ; B, deltoid ; T.ma, teres 

 major; Jj, digastric ; Jlfa, masseter; *, extra cheek-fibres ; 5m, buccinator ; Te, tem- 

 poral ; Oj), orbicularis palpebrarum ; M, naso-labialis or premaxillary ; Of, occipito- 

 frontalis; Llsan, levator labii superioris alseque nasi; B, Blow-hole, and aiTOW 

 leading therein ; f, hook pulling out tendons and superincumbent fascia of sacro- 

 coccygeus. 



Fig. 64. An upper view of the skull, in which the superior muscles of the blow-hole are 

 dissected on the right side. 



Fig. 65. Hinder part of skull, showing second layer of muscles acting on the blow-hole. 



Fig. 66. Third layer of the same, also in profile. 



Fig. 67. Short deep muscles of the neck, on their lateral aspect. 



The lettering of these four figures runs : — B, blow-hole ; spc, spiracular cavity ; p, pre- 

 maxillary sac; m, maxillary sac; nf, naso-f'acial sac; Nl&NV'^, naso-labialis; Of, 

 occipito-frontalis ; Llsan, lev. 1. s. al. nasi ; Lsp, levator superioris proprius ; Z, zygo- 

 maticus &c. ; Py, pyramidalis &c. ; Te, temporal ; Rp, recti postici ; Os and Oi, obliquus 

 superior and inferior; Tms, trachelo-mastoid ; Lts, interspinales, anterior dorsal 

 region; Ch, Stm, Lcl, and Las, cut insertions of ceph.-hum., sterno-mastoid, lev. 

 clav., and lev. ang. scap. ; 2, transverse process of axis. 



Fig. 68. Partial view of under surface of the skull, the neck, and thorax, the ribs of the 

 latter being taken away on the right side. 



Sea, scaleni; Lc, longus colli; Ra.mi, rectus anticus minor; Ba.ma, rectus anticus 

 major, severed; i?Z, rectus lateralis; aS^/lji, sphincter of post-nares ; Pt, pterygoideus. 



Fig. 69. Sternum and sternal libs, from the inside: *S^^, osseous sternum; Ts, triangu- 

 laris sterni. 



Fig. 70. Inner aspect of the left pectoral limb. 



S, subscapularis ; Smg, serratus magnus, insertion cut ; Ssp, supraspinatus ; Tma, teres 

 major; Lad,Pe,& Ch, lat. dors., panniculus, and ceph. hum. insertions; T, triceps; 

 Gh, coraco-brachialis ; Pt, palmar tendons. 



Fig. 71. The right scapula, fi-om within: cp, coracoid process, and Ssp, the supra- 

 spinatus, in its groove. 



Fig. 72. Caudal moiety, minus flukes, of the White-beaked Bottlenose [Lagenorhynchus 

 albirostris), dissected, and showing correspondence with what obtains in 



