DR. J. MTJRIE ON THE MANATEE, 47 



Fig. 3. Eeduced sketch from riature of the right axillary region, showing position of 



the mamma ; t, teat. 

 rig. 4. The female external genitalia, of nat. size : — a, anus ; r, perineal raphe : I, 



labium; «, vaginal orifice. Drawn from the specimen dissected by me in 



1870. 



PLATE VIII. 



-%e, Sternum, Limh-muscles, and Dissections of the Chest for Cervical Nerves, 



Fig. 1. The left eye, of natural size and colour. 



Fig. 2. Front view of the sternum and part of the ribs and intercostals {i) of the right 

 side, reduced ; sc, sterno-costal muscle, and/"/'* fasciae. 



Fig. 3. A dissection of the palmar surface of the right fore limb from the elbow-joint 

 onwards, for comparison with fig. 13, pi. xxii. Trans. Zool. Soc. vol. viii. 

 52, biceps, second head ; Ba, brachialis anticus ; T'\ triceps, third belly ; Ul, 

 ulnar nerve ; B. rete, brachial rete ; Prt, Fcr, pronator radii teres and flexor 

 carpi ulnaris ; «, aponeurosis ; -F. com, flexor communis digitorum ; F.cv, &c., 

 flexor carpi ulnaris &c. ; Fbp, adp, flexor brevis and adductor pollicis ; Fl, 

 Fbmd, palmaris longus and flexor brevis minimi digiti ; Abmd, abductor 

 minimi digiti ; Ojmid, opponens minimi digiti ; int, superficial interossei ; 

 /, //, ///, IV, V, digits respectively. 



Fig. 4. The palm further dissected. F. com, flexor communis cut and reflected ; / to 

 V, digits ; I, the single delicate lumbricalis muscle ; S. int, superficial inter- 

 ossei ; I), int and 1). i>it\ deep interossei ; Fbj), adp, flexor brevis and adductor 

 pollicis ; abmd, abductor minimi digiti ; opmd, opponens minimi digiti. 



Fig. 5. Deep dissection of back part of skull, neck, and thorax, chiefly to show the 

 cervical nervous distribution. St, sternum thrown back ; 1, 2, 3, 4, 5, 6, 7, 8, 

 the eight pairs of anterior cervical nerves issuing from the intervertebral 

 foramina, and relations of other parts ; t*, minute tendon (only on right side) 

 between third and fourth nerves ; pn, pneumogastric nerve ; ph, phrenic 

 nerve ; Sy, Sy*, sympathetic nerves and ganglia ; P, third intercostal nerve ; 

 Pn, posterior nares ; Bo, basioccipital ; c, condyle ; a, atlas ; C^, C^, bodies of 

 fifth and sixth cervical vertebrae ; f^, (V, d^, d*, dorsal vertebrae ; Rama, rectus 

 anticus major; Rami, rectus anticus minor; Obs, obliquus superior; Rl, 

 rectus lateralis; Lc^,^,^, longus colli (three bellies); Sea, scalenus; Bi, digas- 

 tric ; Stm, sterno-mastoid, and Pa &c., panniculus camosus &c. of left side 

 reflected ; Mn, angle of left mandible ; Sh, stylohyoid bone severed ; /. rete, 

 intercostal rete of vessels; Jv, jugular vein, and ca carotid artery: the rete 

 mirabile covering these being removed, the former vein and artery are given 

 as contracted, the better to show the cervical nervous distribution. 

 VOL. XI. — PART 11. No. 5. August, 1880. i 



