37ft 

 i o 



ZOOLOGY. 



well marked ; of the slits or openings between them, th& 

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



B 



FIG. 379. 



FIG. 380. 



Fig. 378. Hind leg of a larval Salamander. The dotted lines are drawn through 

 the rays to which the different pieces belong. Fe, femnr : T, tibia ; F, fibula ; i, t, 

 C, f, 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- 

 carpala). 



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

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

 1- V, metatarsalia of the toes. 



Fig. 380. Leg of the Buzzard (Buteo vulgaris). a, femur; b, tibia; ^fibula; c, 

 tarso-metatarsns ; c', the same piece isolated, and seen from iu front ; dd', d", d'", 

 the four digits or toes. After Gegenbaur. 



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

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



