Plate XLV 



Comparative Series: Left Inner and Middle Ear of Nothardus and Lemur 



Specimens and stereoscopic views prepared by Mr. A. E. Anderson. X f. For abbreviations see Plate XLIII. 



1. Nothardus osborni. Amer. Mus. No. 1146G. Inner and middle ear of the left side seen from below, sliowing the broken wall 

 of the bulla (enty.), the large hypotympanic sinus, the canals for the arteria promontorii and art. stapedia, and the interior of the bony 

 cochlea. 



2. Lemur varius. Amer. Mus. No. 14024. Inner and middle ear of the left side, for comparison with Nothardus. 



