204 E “DR. F. WOOD-JONES ON THE- 
from the genital tubercle -does not seem to be absolutely 
constant (text-fig. 7). ° 
Towards the end of April the colour fades from the perineum, 
but the female genital orifice remains widely patent, and during 
the month of May parturition usually takes place. I have not 
actually seen the bilateral perforations described by Adams, for 
all the specimens I was able to procure at about the critical 
period had either an entirely imperforate blue area, or else had a 
vaginal cleft established. It has seemed to me in several 
instances that the purple pigmentation was most marked im- 
mediately upon either side of the middle line, and though I have 
not myself yet come upon a stage in which the perforation was 
bilateral, I have every reason to suppose such a condition to be 
extremely probable. 
Text-figure 8. 
Winter female with pigmented perineal scar (Noy. 20th). Second year. 
After parturition is effected retrogressive changes evidently 
take place, and in the later months of the year some most 
interesting phases are met with. This vaginal orifice, which is 
formed in inch a curious way, t tends again to become occluded’ in 
the autumn months, and in by far the greater number of 
specimens that I have examined, the outlet for the female 
