DE. J. MUBIB ON THE ORGANIZATION OF THE CAAING WHALE. 301 



Globiceps ; compare fig. 63, with which references agree, save Spc and Ifcd to 

 supra- and infra-caudals. The Nos. 40, 45, 60, denote the vertebrae, counting 

 from the skull. 



PLATE XXXVIII. 



Fig. 73. A posterior or deep view of the rectum, uterus, &c. of G. melas. 



Fig. 74. The uterus, its cornua, and the urinary bladder, opened, and from above. 



Fig. 75. Pelvic bones, and their ligamentous bridge &c., deep surface. 



Fig. 76. Dissection of the external genital region of the same animal, to show situation 

 of the mammary gland and the muscles acting on it and connected with the 

 genitals. An outline of the bladder and uterus are left in place. The super- 

 ficial muscular layer remains on the right side ; and on the left a deeper layer 

 is displayed. 



Fig. 77. The left moiety of the same region, exhibiting a stUl deeper muscular layer. 



Fig. 78. Another view of fig. 77, but seen from the side, and with some of the muscles 

 removed. 



All the above sketches are reductions from nature ; the lettering corresponds through- 

 out. Whilst some of the muscles in one figure are shown entire, their origin or inser- 

 tion only is displayed in the succeeding layer. 



Ut, uterus ; os, its os tincse ; va, vagina ; V, vulva, and cl, clitoris ; c, comu, and cc, same 

 opened on right side; o, ovary, and o*, same split open; pav, ovarian pavilion; B, 

 urinary bladder ; u, urethra ; ue, \ireter ; A, anus ; r, rectum, v, haemorrhoidal vein ; 

 a, internal iliac arteiy ; Mgl, mammary gland ; gl, rectal glands ; PI, pelvis, * repre- 

 senting an anterior, and ** a posterior cartilaginous nodule; Pf, interpelvic fascia; 

 P.c, panniculus carnosus; L.a, levator ani; Sp.a, sphincter ani; Mah &c., rectus 

 abdominis &c. ; E.c, erector clitoridis; Cm, compressor mammse; Cur, constrictores 

 urethrse ; Spv, sphincter vaginae ; Dtp, deep transversus perinei ; Isc, ischio-coccygeus ; 

 P & Ic, pubo- and ilio-coccygeus ; axn, artery and nerve transmitted through aper- 

 ture in interpelvic fascia (probably the homologues of obturator artery and nerve in 

 quadrupeds). 



