Plate XLVII 



Comparative Series: Auditory Ossicles of yoriharcfiis and other Primates 

 Specimens and stereoscopic views prepared by Mr. A. E. Anderson. X ? . 



Upper figure: Auditory ossicles, right side, dorso-raedial aspect. Also, the left malleus of Nothardm, seen from below. 

 3. Macacus rhesus 4. Ateles sp. 



Amer. Mus. No. 26646 Amer. Mus. No. 6336 



1. Notharctus osborni 2. Propithecus diadema 



Amer. Mus. No. 11466 Amer. Mus. No. 31253 



In Ateles the malleus shows the following processes: (1) processus longus, a very large sharply pointed process on the manubrium 

 near the caput mallei; (2) processes brevis, a well defined, blunt process distal to the processus longus and lying in a plane almost at 

 right angles to it; (3) processus rauscularis, a low projection on the opposite side of the manubrium and distal to the processus brevis. 



Lower (steroscopic) figure: The same series seen from below. 



