546 Proceedings of the Royal Irish Academy. 



arches of the foot were obliterated, and the most projecting portion of 

 the tarsus was the anterior tubercle of the os calcis. 



The Muscles : — Extensor brevis digitoi-um : insertions; first and third 

 normal, second and fourth into the base of first phalanx of corresponding- 

 toe. Peroneus longus : inserted into a well-marked tubercle on the 

 outer side of the os calcis, which most probably represented its own 

 sesamoid bone. A fibrous band was continued from this tubercle to 

 the normal insertion of the muscle. 



Tibialis anticus : — A slip from the tendon of this muscle passed 

 forwards to be inserted into the head of the first metatarsal bone. 



In the Vessels nothing peculiar was observed. 



The ISTerves : — The anterial tibial, in addition to the normal 

 branch between the first and second toes, sent a much larger branch 

 directly to the space between the second and third toes, where the 

 separation was complete. The fusion between the toes was most 

 marked at their anterior extremities. 



Synovial cavities were developed between the heads of the first, 

 second, third, and fourth metatarsal bones. An articulation also ex- 

 isted between the bases of the first and second metatarsal bones. 



