PLATE XLIX. 



Class AMPHIBIA continued. 

 THE FROG continued. 



FIG. 1. FORE LIMB, x 2. 



h. humerus : r. radius and u. ulna, fused : c. carpal bones ; m. 

 metacarpal bones : II.- V. phalanges of the second to the fifth 

 digits. 



FIG. 2. HUMERUS. x 2. 



FIG. 3. ULNA AND EADIUS. x 2. 



o. olecranon : c. carpal articulation. 



FIG. 4. HIND LIMB, x 1. 



/. femur: t. tibia and^/2. fibula, fused: a. astragalus and o. os calcis, 

 fused at their extremities : tr. distal row of tarsal bones : 

 c. calcar : m. metatarsals : I.-V. phalanges of the five digits. 



FIG. 5. TRANSVERSE SECTION THROUGH THE TIBIA AND FIBULA, x 3. 



FIG. 6. FEMUR, x 1|. 



FIG. 7. TIBIA AND FIBULA, x 1|. 



FIG. 8. PROXIMAL TARSAL BONES, x 1 1. 

 a. astragalus : o. os calcis. 



FIG. 9. LEFT Os INNOMINATUM. x 2. 



il. ilium : is. ischium : p. pubes : a. acetabulum. 



FIG. 10. PELVIC GIRDLE : DORSAL VIEW, x 2. 



il. ilium : is. ischium : a. acetabulum : us. urostyle. 



FIG. 1 1. PECTORAL GIRDLE : VENTRAL VIEW, THE LEFT SUPRASCAPULA BEING 

 LAID OUT. x 2|. 



x. xiphisternum ; s. sternum : e.c. epicoracoid : o. omosternum : 

 e. episternum : pt.c. postcoracoid : c. clavicle : g. glenoid 

 cavity : sc. scapula : s.sc. suprascapula. 



FIG. 12. CLAVICLE IN ITS RELATION TO THE CORACOID. x 3. 



o. omosternum : c. clavicle : p.c. prsecoracoid : pt.c. postcoracoid. 



