DK. J. MURIE ON THE MANATEE. 



37 



Fif?. 1. 



•'•■'■ m^fli 



,|lntfj.S)i.rcj.Pa,!fc. 



Chk Pe. 



Diagram of the Cervical Nerves of the left side of the necJc in the Westminster- Aqu 



, Manatee. 



1. First nerpe. B.a, Twigs to rectus ant. major and rectus ant. minor ; R. la, rectus lateralis {iSt.m and Pa, 



to stemo-mastoid and panniculus ; Rey. Ear, to region of ear ; and Pa, panniculus carnosus &c. 



2. Second nerve. Integ. Sh. reg., Pa. ^c, branches terminating ia the tegumentary region of the shoulder and 



panniculus muscle &c. 



3. Third nerve, issuing along with the fourth. * loop of communication with second nerve ; Tz &c., offshoots 



suppl)-ing the trapezius and other jiarts of the neck. 



4. Fourth nerve, after separation from third trunk. Ph, phrenic nerve, derived near loop of junction with fifth ; 



Sh. j, Tz. Sfc, division terminating around shoulder-joint, the trapezius, (fee. ; P.ma. ''D. Sj- Sh. j., second 

 division to pectoralis major, deltoid, shoulder-joint, &c. ; S.sc. », s. if-c, the nerve which passes through 

 suprascapular notch and is distributed to fleshy parts back of scapula &c. 



5. Fifth nerve. Loop to fourth, afterwards dividing into branches : Sb to subsoapularis, G the circumflex 



nerve, and Sh, te, ^c., nerves to subscapularis, the teres muscle, &c. Communicating branches proceed 

 from the fifth to the sixth and to a division of seventh cervical nerve. 



6. Sixth nerve, with cords of union with fifth, seventh, and eighth. C, circumflex nerve ; .S7), te S^c, subsca- 



pular and teres branches ; La.d, to latissimus dorsi ; iJ ', to biceps ; Pe, to pectoralis. 



7. Seventh nerve, with union to eighth. M.sp, musculo-spiral ; M, median. 



8. Eighth cervical. /««.', union with first intercostal nerve ; U, ulnar ; /. c, internal cutaneous ; Wr_ nerve 



of Wrisberg ; Ch 6i pe, chest and pectoralis branches ; La. d, latissimus dorsi branches. 



g2 



