378 ZOOLOGY. 



weU marked ; of the slits or openings between them, the 

 first is destined to form the mouth, the next pair of slits 



Pig. 378. 



Fig. 379. 



Fig. 380. 



The dotted lines are drawn through 



Fig. 378.— Hind leg of a larval Salamander. ^_ 



the raye to which the different pieces belong. Fe^ femur : T, tibia ; F^ fibula ; i, t, 

 c, fy tarsal bones ; i^ os intermedium ; t, tibiale ; /, fibulare ; c, centrale ; 1-5, the 

 five tarsals. The first row of phalanges are called metatarsals (in the hand, meta-. 

 carpals). 



Fig. 379.— Bones of the foot of a Reptile (lizard) A^ and an embryo bird. B. /, fe- 

 mur ; ^ tibia ; n, fibula ; ts, upper, ti. lower pieces of the tarsus ; m, metatarsus ; 

 i-F, metatarsalia of the toe^. 



Fig. 380.— Leg of the Buzzard (Buteo mtlgaris). a, femur; 6, tibia; 6', fibula; c, 

 tarso-metatarsus ; </, the same piece isolated, and seen from iu front ; dd', d", rf'", 

 the four digits or toes.— After Gegenbaur. 



in the Amphihia and higher Vertebrates forms the ear-pass- 

 ftge, while the other slits may remain open in fishes, form- 



