ANATOMY OF THE SHOE-BILL. 



683 



According to Welclon and my own notes, this muscle is absent in 

 Le2}topfilus, hntl found it preseiit and with an extension of its 

 origin to the fibula in Herons. 



Tibialis anticus. — The outer head arises by a strong tendon 

 from the external condyle of the femur and runs in a deep groove 

 to join the fleshy head from the tibial crest. Insertion by a 

 forked tendon to the tarsus-metatarsus, in a pit about an inch 

 below the joint. The conditions ai'e practically the same in 

 Herons and Storks. 



Text-fio-. 130. 



Ad. 



Isf. 



C.Il.l. 



Gaatrociiemius and its relations in Balceniceps. 

 Adductor niagnus SI. Tendinous slips from adductor to tibia. 



Ischio-tlexorius (Semimembranosus). 



Femoral head of Caud-ilio-flexorius (Accessorj- Semitendinosus). 

 C. 11.2. Belly of Caud-ilio-flexorius (Semitendinosus). 

 Gel, external, Gc.2, middle, Gc. 3, tibial portion of Gastrocnemius. 



Soleus. — This little muscle has the usual relations, but is 

 relatively rather stronger than in Storks and Herons ; it arises 

 fleshy from the inner side of the tibia and is inserted to the 

 annular cartilage of the ancle-joint. 



Extensor comimmis digitorum : arises fleshy from the crest and 

 external surface of the shaft of the tibia (text-fig. 129, Ex.com.). 

 The strong tendon passes through a bony and a fibrous bridge 

 and runs down to the digits where it divides symmetrically into 



