REPORT ON THE MARSUPIALIA. 181 



Fig. 6. s. Twig to sartorius muscle. 

 a.c. Anterior crural nerve. 



0. Obturator nerve. 



s.g. Superior gluteal nerve. 

 g.m. Branch to gluteus maximus. 

 h. Nerve to hamstrings. 

 (,'.s. Great sciatic nerve. 

 s.s. Small sciatic nerve. 



p. Pudic nerve. (The twig marked "p" in fig. 6, which springs from the 

 third lumbar nerve, goes to the psoas muscle.) 



PLATE VI.— Dissections of the Feet of THYLACINUS and CUSCUS. 



Fig. 1. Dissection of the intrinsic muscles of the left foot of the Thylacine. A probe 

 has been introduced between the plantar layer of adductores and the inter- 

 mediate layer of flexores breves. 

 2>~. Adductor indicis. \ 



p*. Adductor annularis. > Plantar layer. 

 p 5 . Adductor minimi digiti. ) 

 f 2 .o. Outer head of flexor brevis indicis. 

 r2 .i. Inner head of flexor brevis indicis. 

 f s .o. Outer head of flexor brevis minimi digiti. 

 f r '.i. Inner head of flexor brevis minimi digiti. 

 d 2 . First dorsal interosseus. 

 d 6 . Abductor ossis metatarsi minimi digiti. 

 d y . and d 6 ". The two abductors of the minimus. 



1. External plantar nerve. 



2. Deep division of external plantar nerve. 



3 and 4. The two digital branches of the superficial division of the external 



plantar nerve. 

 Fig. 2. The same foot of the Thylacine. The plantar adductores have been thrown down. 



and a probe introduced between the intermediate flexores breves and 



the dorsal abductors. 

 The corresponding letters in fig. 1 indicate corresponding structures in this 



ficmre. 

 f 2 . Flexor brevis indicis. 



f s . Flexor brevis medii. 

 f*. Flexor brevis annularis. 

 f a . Flexor brevis minimi digiti. 



Intermediate layer. 



