THE ERAIN 



163 



hypophysis and glandular saccus vasculosus are present, but these 

 vary much in the degree of their development. The saccus 



FaU 



Bas.Cf— 



VII jr^^ ^ 



M — -^k^^ 





-im 



HE 



VE(Pall) 



Fig. 133. — Bkain of SalmOjS'. (A, dorsal ; B, ventral ; and C, lateral view.) 



Vh, prosencephalon ; Pall, pallium (in part removed), and BG and Bas.G, b.-isal 

 ganglia (corpora striata) of the prosencephalon; L.ol, olfactory lobe; G.p, 

 pineal body ; Jnf, infundibulum ; Hyp, hypophysis ; Sv, saccus vasculosus ; 

 UL, lobi inferiores ; Tr.opt, optic tract; Ch, chiasma ; 21 H, mid-brain; 

 HH, cerebellum ; NH, medulla oblongata ; Med, spinal cord ; I-X, cranial 

 nerves ; 1 and 2, first and second spinal nerves (the first represents the 

 hypoglossal, XII). 



vasculosus opens by several apertures into the infundibulum, and 

 is surrounded by a blood-sinus. 



M 2 



