334 GEORGINA SWEET. 
pupil, is a mass of cells and fibrous tissue irregularly arranged. 
This is the much more degenerate iris and lens. 
The retinal layers have completely filled the greater part of 
the eyeball, so that in section the internal limiting and hyaloid 
membranes from either side are seen to be in contact along 
the median longitudinal line of the eyeball, there being no 
vitreous humour or posterior chamber. in more favourable 
parts, the outer nuclear, outer molecular, and inner nuclear 
layers are clearly to be seen, but the remaining layers are 
very ill-defined. No special ganglion cell layer is observable. 
Outside the outer nuclear layer is an irregular, staining 
very faintly indeed, but often visible where the retina is torn 
away from its pigment layer. Distorted rod-like structures 
may be detected here and there in this, which is evidently all 
that is left of the layer of rods and cones. 
(c) Adult. 
The eye of the adult of C. asiatica lies as usual in 
Chrysochloris in the dermis among the roots of the hairs 
which surround the eyeball, while beneath it are the subcu- 
taneous muscles. 
The distance of the anterior face of its corneal region from 
the surface is ‘51 mm. The length of the eyeball is ‘54 mm., 
and its transverse diameter ‘38 mm. 
Its gland mass is much more deeply situated than in pre- 
vious forms, the gland duct to the conjunctival sac being 
wide and very definite. No tube was to be found with 
certainty opening to the surface, but in view of the well- 
developed character of the gland-duct and conjunctival sac, 
and of the fact that no other exit was apparent for the excre- 
tion, it is probable that it was torn or distorted in some way 
during preparation, so hindering its detection. 
In almost every detail otherwise, the eye of the adult of 
C. asiatica is closely similar to that of C. hottentota. 
