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Show 1894.] ANATOMY OF ORNITHORHYNCHUS. 709 one from the shaft of the bone. The muscle is inserted into the first digit; the superficial portion from the upper extremity of ^u- v1 8 s uPPu e d by a branch of the same nerve which supplies tibialis anticus. Fig. 6. MUSCLES OF ANTERIOR SURFACE OF LEG AND DORSUM OF FOOT. a. P 7- 8. e. e. K. Tibialis anticus. Extensor longus hallucis. Extensor indicis. Superficial extensor of the toes. Deep extensor of the toes. Peroneus longus. Peroneus brevis. Extensor longus digitorum.-There are two long extensors of the toes, superficial and deep. They both arise from the expanded upper extremity of the fibula. Superficial extensor also from part of shaft of bone. They both expand on the dorsum of foot and give tendons to the second, third, fourth, and fifth digits. Super-. |