Plate XLIII 



Comparative Series: Left Inner and Middle Flar of Lemur rarius 



Amer. Mus. No. 14024. Seen obliquely from a point below and in front of the left auditory bulla, the latter having been removed 

 Showing the stapes in silii, traversed by the osseous stapedial ranal. Specimen and stereoscopic view prepared by Mr. A. E. Anderson 

 X j. 



Abbrevi.\tions 



aq. Fal. broken wall of the canalis facialis (aqueductus Fallopii). 



art. car. in. bristle leading into canal for the "arteria promontorii." 



art. St. canal for stapedial branch of internal carotid artery. 



each. auditory prominence of cochlea. 



/. c. foramen condylare (N. XII). 



/. /. p. foramen lacerum posterius, jugular foramen. 



/. or. foramen ovale (N. V3). 



/. pt. up. foramen pterygo-spinosum (for the internal pterygoid branch of the internal maxillary artery). 



/. St. m. foramen stylomastoideum (N. VII), leading into the canalis facialis. 



pr. p. gl. processus postglenoideus. 



rec. epity. recessus epitympanicus or attic, after the removal of the malleus and incus. 



St. stapes. 



tu. au. tuba auditiva, or Eustachian opening. 



imis hypotymp. sinus hypotympanicus, or cavitj' of the bulla. 



