Rirrer. — Eves of Typhlogobius calif. 
14. 
16. 
PLATE II. 
Meridional vertical section of an eye from a specimen about 50 mm. long. 
< 150. The fold in the pigment layer of the retina is indicated at *. 
(See text, p. 63.) 
Meridional section of an eye without a lens. Specimen 63 mm. long. 
x 88. 
The section, not quite meridional, is from the same eye from which 
Figure 6 is taken, and is given to show the pigment mass (pig.”’) in 
the place of the lens. Consequently only the pigmented portion of the 
eye is drawn. X 115. 
A dissected acetic-acid glycerine preparation to show the eye muscles 
and optic nerve.  X 60. 
Section of the integument from the dorsum of the head perpendicular 
to the surface, from an individual 19 mm. long. 450. 
Section similar to the one shown in the preceding figure, but from an indi- 
vidual 72 mm. long. x 450. 
Preparation similar to the one shown in Figure 4 (Plate I.), but from the 
side of the body. X 65. 
Section, not quite meridional, from an individual 60 mm. long. ™X 115. 
The pigmented portion of the retina and choroid, from the same eye. 
x 280. The fold in the pigment layer of the retina is indicated at *. 
(See text, p. 63.) 
A small portion of the pigment layer of the retina, and the choroid gland 
with the optic nerve passing through it. Specimen 63 mm. long. 
x 300. 
A small portion of the retina, showing the optic nerve passing through it. 
Same eye as that shown in the preceding figure. X 300. 
The iris and the adjacent parts; same eye as that shown in Figure 6. 
x 350. 
