DEVELOPMENT OF THE HYPOPHYSIS 419 
Fig. 26 Drawing of a dissection of the hypophysis of an adult Acanthias from 
ventral side. X 20. AJL, anterior lobe; B, inferior lobes of the brain; C, inter- 
hypophyseal canal; JL, inferior lobes of the hypophysis; SL, superior lobe of the 
hypophysis; VS, vascular sac. 
Haller in Mustelus. From their median connection a long slender 
tube extends to. the caudal end of the floor of the anterior lobe. 
As seen in figure 26, the median connecting portion of the infe- 
rior lobes may be large. In some specimens this part, as well as 
the lobes, shows a mass of tubules. The caudal ends of the 
inferior lobes are surrounded by cartilage. 
The shifting of the hypophysis with reference to its position 
in the body and the development of different parts is brought 
out very clearly in figure 27. Sewertzoff (99), in his studies 
