378 



PEOFESSOE OWEN ON THE GENUS DINOENIS. 



DESCRIPTION OF THE PLATES. 



PLATE LVIII. 



Fig. 1. 

 Fig. 3. 



Left Metatarsal. 



Front view. 



Upper or condylar end. 



a. Entocondylar cavity. 



b. Ectocondylar cavity. 



c. Intercondylar process. 



d. Intercondylar tract. 



e. Ento metatarsal ridge or tuberosity. 



f. Ectocondylar ridge. 



g. Entogastrocnemial ridge. 

 h. Antero-superior ridge. 

 i. Antinterosseal depression. 

 Jc. Ectometatarsal tuberosity. 

 I. Entinterosseal canal. 

 m. Ectinterosseal canal. 

 n. Antinterosseal canal. 



Nat. size. 



Fig. 2. Back view. 



Fig. 4. Lower, or trochlear end. 



0. Fossa of tibialis anticus tendon. 

 p. Entotrochlear ;ridge. 

 r. Entocalcaneal process. 

 s. Ectocalcaneal process. 

 u. Calcaneal groove. 

 V. Postinternal surface, 

 w. Postexternal surface. 

 X. Ectogastrocnemial surface. • 



1. Hallucial surface. 



II. Entotrochlea. 



III. Mesotrochlea. 



IV. Ectotrochlea. 



PLATE LLX. 



Fig. 1. Front view. 



Right 



Fig. 3. Upper articular end. 



a. Entocondylar surface. 



b. Ectocondylar surface. 



c. Intercondylar canal. 



d. Intercondylar eminence. 



€. Rotular (epicnemial) process. 



/. Epicnemial channel. 



g. Procnemial ridge. 



h. Ectocnemial ridge. 



i. Ectocnemial ca^dty. 



j. Pneumatic orifices. 



k. Intercnemial cavity. 



tibia. Nat. size. 



Fig. 2. Back view. 



Fig. 4. Lower epiphysis of tibia of Dromaius. 

 I. Suprafibular sui'face. 

 m. Fibular ridge. 

 n. Orifice of medullary artery. 

 0. Gastrocnemial surface. 

 p. Extensor groove. 

 q. Extensor bridge. 

 r. Extensor bridge, lower outlet. 

 s. Entocondyle. 

 t. Ectocondyle. 

 u. Intercondylar space. 

 V. Trochlear canal. 



