BRAIN AND CRANIAL NERVES OF BDELLOSTOMA DOMBEYI. 181 
PLATE 10. 
Fic. 7.—Photograph of a horizontal section of the brain, about three fifths 
of the way from the dorsal to the ventral surface. x 15. 
Fic. 8.—Photograph of a cross section of the brain through the entrance 
of the optic nerve. xX 15. 
Fic. 9.—Photograph of a cross section of the brain through the hypo- 
physis. x 15. 
Fic. 10.—Photograph of a cross section of the medulla, through the exit of 
the Trigeminus. x 15. 
Fic. 11.—Photograph of a cross section of the medulla through the 
entrance of Acusticus a. x 15. 
Fie. 12.—Photograph of a cross section of the spinal cord. x 42. 
Fig. 13.—Photograph of a sagittal section through the infundibular pro- 
cess, in the median plane. x 40. 
PLATE 11. 
Fie. 14.—Diagram of the origin and distribution of the cranial, spino- 
occipital, and first spinal nerves. The outlines of the brain, eye, and ear are 
shown in dotted lines. x about 9. 
