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



Figs. 2 and 3. p*. Adductor of the minimus. 



f\ Flexor brevis hallucis. 



f 2 . Flexor brevis indieis. 



y 3 . Flexor brevis medii. 



y 4 . Flexor brevis annularis. 



f s .t. Tibial head of flexor brevis minimi digiti. 



o.m. Opponens minimi digiti. 



d l . Abductor hallucis. 



d~. First dorsal interosseus. 



d". Two parts of abductor minimi digiti. 



a.m. Abductor ossis metatarsi minimi digiti. 

 Figs. 4 and 5. Superficial and deep dissections of the intrinsic muscles of the left foot of 

 the Virginian Opossum. 



p 1 . Adductor hallucis. 



p*. Adductor indieis. 



p*. Adductor annularis. 



p B . Adductor minimi digiti. 



f 1 . toy' 6 . Flexores breves. 



d 1 . Abductor hallucis. 



cP. First dorsal interosseus. 



d\f. and d : '.t. Two parts of the abductor minimi digiti. 



a.m. Abductor ossis metatarsi minimi digiti. 



PLATE VIII. — Intrinsic Muscles in the Feet of various Mammals. 



Fig. 1. Left foot of the Bathyergus capensis. 



J 1 , to/ 5 . Flexores breves. 

 Fig. 2. Left foot of the otter. 



p l . Adductor hallucis. 



p 2 . Adductor indieis. 



p h . Adductor minimi digiti. 



o.m. Opponens minimi digiti. 



f 1 . toy* 5 . Flexores breves. 



f°.f. Fibular head of flexor brevis minimi digiti. 



f\t. Tibial head of flexor brevis minimi digiti. 



d~. to cZ 5 . Dorsal interossei. 



a.o. Abductor ossis metatarsi minimi digiti. 

 Fig. 3. Left foot of the Armadillo. 



