MR. SANDERS ON THE NERVOUS SYSTEM IN VERTEBRATE ANIMALS. 
Fig. 21, PI. 65. Cells from the hypoaria. All X 945. 
a. A cell from the general parenchyma. 
b. A group of cells from the neighbourhood of the ventricle of the 
liypoarium. 
c. Cells from beneath the epithelial lining of the infundibulum. 
cl. Larger cells from the ventricle of the pituitary body. 
Fig. 22, PI. 65. a. Section of the nucleus rotundus of the liypoarium of Crenilabrus. 
a' a'. Placed opposite capillaries. X 61. 
b. One of the bodies in the nucleus rotundus of same specimen. X 565. 
b'b'. Placed opposite capillaries. 
Fig. 23, Pis. 61 and 64. Longitudinal section of the cerebellum of the Grey Mullet. 
X 170, showing three of the layers which are found in that body. 
Fig. 23. a. External layer of straight fibres. 
b. Second layer, consisting of cells of Purkinje. 
c. Third layer, consisting of minute cells. 
cl A Purkinje cell. X 565. 
e. Two minute cells from the third layer. X 945. 
Fig. 24, PL 65. Longitudinal and vertical section through the brain of Mugil, taken 
more externally than fig. 1 . Showing the commissures between the cere- 
bellum, the optic lobe, and the liypoarium. 
