176 THE VOYAGE OF H.M.S. CHALLENGER. 



Fig. 6. D. I. First dorsal nerve (anterior primary division). 

 s.c. Nerve to subclavius. 

 s. Suprascapular nerve. 

 8.8. Subscapular nerve. 

 c. Circumflex nerve. 

 m.s. Musculo-spiral. 

 m.c. Museulo-cutaneous nerves. 

 m. Median nerve. 

 u. Ulnar nerve. 

 i.e. Internal cutaneous nerve. 

 p.m. Nerve to pectoral muscles. 

 p.c. Nerve to panniculus carnosus. 

 p. Phrenic nerve. 

 e.r. External respiratory nerve. 



PLATE III— Hind Limb of the CUSCUS. 



Fig. 1. Dissection of the gluteal region and the outer aspect of the thigh. 



ec a ^ 

 ' J 2 > The two parts of the ecto-gluteus. 



ec.g. s The agitator caudae. 



ee.g 1 *. Insertion of the anterior part of the ecto-gluteus. 



ee.g 2 *. Insertion of the posterior part of the ecto-gluteus. 



ec.g z *. Insertion of the agitator caudae. 



p. Pyriformis. 



p.n. Pudic nerve. 



s.s.n. Small sciatic nerve (this nerve should be represented as passing under 



cover of c.t.). 

 g.n. Nerve supplying the gemelli, the quadratus femoris, and the adductor 



magnus. 

 h.n. Nerve to the hamstring muscles. 

 g. Gemelli muscles. 

 i.f. Ischio-femoral muscle. 

 c.t. Caudal portion of biceps. 

 o.e. Obturator externus. 

 Q.f. "Quadratus femoris. 

 b. Biceps. 



s.t. Semi-tendinosus. 

 a.m. Adductor magnus. 



