202 DE. J. MUEIE ON THE FORM AND STRUCTURE OE THE MANATEE, 



1, 2, 3, 4, 5, 6, the cervical vertebra; cc, costal cartilages of the sternal ribs; ao, arch 

 of the aorta ; IcBete, intercostal rete ; li, internal intercostal muscles ; D, D*, dia- 

 phragm of right side, in situ; K, kidney thereupon; V, renal vein; u, ureter; 

 Eo, posterior termination of external oblique muscle; Ql, quadratus lumborum, 

 internal to which portion of lumbar and caudal rete {Crete) is seen; Sc, sacro- 

 coccygeus entire on right side, and cut edge on left; i/lc, infra-coccygeus ; L.cd, 

 partial view of lumbo-caudalis. 

 Fig. 45. The uterus, minus ovaries and fimbriae, seen deeply, or on its dorsal aspect. 

 The parietes are cut open : lit, uterus ; os, os tincae ; Ic, left cornu ; R, rectum ; 

 Rete, lumbar rete ; Px, uterine plexus. 

 Fig. 46. A continuation of fig. 45, displaying the pelvic parts from below the muscles, 

 the retial vessels as they spread out, and part of that which runs under the 

 tail. 



L.Rete, lumbar or hypogastric rete ; C.Rete, caudal rete ; PI, pelvic bone ; Rab, portions 

 of rectus abdominis ; Isc, ischio-coccygeus ; Pc, termination of panniculus carnosus ; 

 pn, nerve piercing the tissues close to pelvis. 

 Fig. 47. The glans penis in its sheath, or male parts corresponding to those of the 

 female shown in the succeeding figure : s, sheath slit open and dragged out ; 

 g, glans ; mu, meatus urinarius. 

 Fig. 48. A reduced sketch of the vulva, the skin and superficial tissues having been 

 removed : cl, clitoris ; mu & v, vulva and meatus urinarius ; *Spy, sphincter 

 vaginae. 

 Fig. 49. Sketch of the posterior abdominal region in tlie male, the parietes &c. being 

 removed, and a deep dissection made on the left side. The penis has been 

 cut away near its root ; and what remains, along with the bladder, are seen 

 turned backwards. 

 P, penis, and pa, its artery ; R, bladder ; vd, vasa deferentia ; Te, testicle ; H.Rete, rete 

 mirabile of loins and pelvo-generative region ; r, tips of three hindmost ribs ; R, 

 rectum ; K, kidney ; gl, gland ; u, ureter ; v, vein ; a, artery ; D, diaphragm. 

 Fig. 50. A dissection of the left moiety of the pelvic region of the female, exhibiting 

 the pelvic bone in place, its muscular attachments, the vast lumbar rete 

 mirabile, and relation of the uterus, kidney, and bladder to each other. 

 B, B*, diaphragm; K, kidney; v, renal vein; a, artery; u, ureter; B, bladder; F, 

 vulva ; A, anus ; R, rectum ; PI, pelvic bone ; c, cornu ; /, fimbria ; o, ovary ; ha, 

 hypogastric artery ; H.Rete, hypogastric or lumbar vascular plexus ; Pc, Pc, panni- 

 culus, severed ; Rab, Rab*, rectus abdominis ; Eo, external oblique ; L.cd, lumbo- 

 caudalis ; Sc, sacro-coccygeus ; Is.c, ischio-coccygeus ; Sp.a, sphincter ani ; Sp.v, 

 sphincter vaginae ; L.a, levator ani ; Tp, transversus perinaei ; E.c, erector clitoridis. 



