Glans Penis in Macaque Monkeys. 227 
nemestrinus, although it is true that Murie states the baculum 
of the rhesus to be relatively solid and only half the size of 
that of the Japanese macaque. 
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Romtoath vow > 
In the species named the glans is much shorter than the 
ie, 2: 
Glans penis of Macaca nemestrina from the side, X, X marking the 
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position and leneth of the labiate terminal orifice of the urethra, 
. The same from below, 
. The same from above, X marking the proximal end of the baculum. 
. The same from the front, with the labia of the terminal orifice 
dilated, showing the eccentric inner opening of the urethra. 
. Glans penis of Macaca trus from the side. 
The same from above, 
. Glans penis of Zati sinicus from the side. 
. The same from above. 
Penis, partiaJly withdrawn, of Z. stnicus, another specimen. 
. Glans penis of same specimen from the front, with labia separated, to 
show eccentric orifice of urethral canal. 
All figures two-thirds natural size. Drawings made from adult 
examples. 
‘oximal portion of the penis, and, setting sinicus for a 
oment on one side, is bluntly rounded at the apex and forms 
an irregularly rounded or ovate, soft, cushion-like cap * to 
de 
p: 
* Quite appositely likened to a helmet by Retlever and Neuville, who 
scribed it in M. fascteularis and rhesus (C, R. Soe. Biol. Paris, Ixxyii, 
535, 1914). 
