( 1152 } 
rather small and covers the skin of the root of the penis, without 
passing on the scrotum. 
In female animals the caudal boundary of the zone is situated 
+ 2'/, cm. cranially from the foot of the Mons veneris. 
Rigs E.E AN: Fig. Xe. UW. 
L. wm. Contrasting with the nearly for all cases constant situation 
of the boundaries of the strychnine-segmental zone of L. 1, as e.g. 
relative to the trochanter and to the fixed points of the knee-joint, 
we remark in the zone of Z. ur that, though the form remains 
nearly the same, the situation of the boundaries in different cases 
is rather variable. 
In Str. dog XLVIIL e.g. I found that the caudal boundary runs 
Fig XI. D. UL. 
