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Show 816 MR. G. E. DOBSON ON THE ANATOMY [June 21, Cercopithecus callitrichus. Adductor muscles and flexores breves vel interossei of right foot, imm. §. a. Adductor hallucis; a', adductor indicis; a", adductor annularis; a'", adductor minimi digiti; i", i", iiy, iY. plantar interossei (second to fifth toes) ; t. p. transversus pedis ; fl h. tendon of flexor longus hallucis. The adductors of the second, fourth, and fifth digits arise together in close connection, partially under cover of the origin of the adductor hallucis; that for the second digit is much smaller than the others. The plantar flexores breves vel interossei are well developed, a pair for each digit inserted into the sides of the base of each first phalanx; the innermost of the pair for the middle digit is strengthened by receiving near its insertion an additional strong muscular fasciculus arising from the scaphoid bone. The specimen from which the above notes have been taken, was sent from Barbadoes (into which island it was no doubt imported from the west coast of Africa), and corresponds in all respects to specimens in the British Museum labelled " Cercopithecus sabaus ; " but this name is restricted by Schlegel' to a closely allied species from Eastern Africa. In the ' Proceedings ' of this Society for Jan. 1865, pp. 43-46, Mr. Mivart has published 'Notes on the Myology of a specimen of Cercopithecus saBaus;" but m y specimen (if belonging to the same species) presents many important differences in its anatomy, which may be briefly exhibited as follows :- 1 Monographic des Singes, 1876, p. 75. |