Innervation.—One or two tiny branches come off the tibial nerve near the distal end of the main trunk of the sciatic nerve, pass anteriorly deep to the peroneal nerve, and penetrate the lateral surface.
Individual Variation.—In two legs, the branch of the medial division of the tibial nerve which supplies M. gastrocnemius pars media sends a twig to the lateral surface of the distal end of M. femorocruralis (in addition to the usual innervation).
T. cupido
Individual Variation.—None of significance.
P. p. jamesi
Differences from Typical T. pallidicinctus.—The muscle is much wider, extending farther proximally on the femur.
Individual Variation.—None of significance.
M. Gastrocnemius, [Figs. 12], [13], [15]
T. pallidicinctus