248 AVERS. [Vol. II. 



The presence of this pithecoid as distinguished from human 

 character is thus the rule and not the exception among human 

 males, reversing in this respect the general law of development 

 among animals, that the female remains in a more primitive 

 state of development than the male. 



The ratio of the reduction of the ear in man beyond what 

 we find in the lower apes is that of five to four in favor of the 

 female. 



It is interesting to note that while Schwalbe found the left 

 ear to be, in general, more reduced, both in men and women, 

 in the case which is here presented, it is the left ear which 

 shows the Cercopithecus form, while the right ear approaches 

 more nearly the normal human type. 



This case is especially interesting on account of the addi- 

 tional information it gives of the details of the process of 

 reduction of the auricular apex. 



The apex of the ear lies upon the unrolled posterior border 

 of the ear, above the anthelical line. It lies at the outer end 

 of and forms the projecting spout of a trough which leads 

 from the posterior (external) edge of the helical border for- 

 wards, downwards, and inwards, across the anthelical depres- 

 sion into the depths of the fossa angularis. This groove I 

 have never seen in an adult ear, and only the faintest indi- 

 cations in other embryonic ears which have come under my 

 observation. 



Opposite the groove the mesal face of the lobe is carried 

 out into a ridge which extends from Darwin's point towards 

 the base of the ear, but does not reach it, fading out into the 

 general level of this surface of the pinna. 



The apical part of this ridge is shown in the figure at s, 

 and can be seen here because of the slight out-flexure of the 

 free border of the helix just below the Darwinian point. The 

 border immediately above the apex shows no trace of flexure 

 ouu of the plane of the pinna. The figure is carefully drawn 

 to scale, enlarged three diameters. The shading, however, 

 does not do justice to the original. The axes indicated by the 

 arrows are the only ones I have thought worth while measuring, 

 but any other measurements are readily had from the figure. 



