PLATE 8 
EXPLANATION OF FIGURES 
35 Polypterus. Transverse section through the olfactory bulb. 
36 Polypterus. Section taken through the interventricular foramen. Same 
series as figure 35. 
37 Polypterus. Section somewhat behind figure 36. Same series. 
38 Polypterus. Section somewhat behind figure 37. Same series. 
39 Lepidosteus. Section through the forebrain a good distance before the 
anterior commissure. 
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