54 A NEW CRANIAL NERVE IN SELACHIANS. 



V. BIBLIOGRAPHY. 



Allis, E. P. 



'97. The Cranial Muscles and Cranial and First Spinal Nerves in Amia calva. Jour. Morph.; vol. 12; no. 3; 

 pp. 487-808, pis. 20-38. 

 Busch, W. 



'48. De selachiorum et ganoideorum encephalo. (Diss.) Berolini, 4°, 48 pp.; 3 tav. 

 Fritsch, G. '■ ' 



'78. Untersuchungen fiber den feineren Bau des Fischgehirns. Berlin, 4°, 94 +xv pp.; 13 Taf. 

 Hoffmann, C. K. 



'96. Beitrage zur Entwicklungsgeschichte der Selachii. Morph. Jahrb., Bd. 24, pp. 209-286, Taf. 2-5. 

 Leuret, F., et Gratiolet, L. P. 



'39-57. Anatomie compare du systeme nerveux. Paris, 8°, 2 vols., xxxii+592 pp.'; xi+692 pp.; atlas, 4°, 

 60 pp., 32 pis. 

 Locy, W. A. 



'95. Contributions to the Development and Structure of the Vertebrate Head. Jour. Morph.; vol. 11, no. 

 3, pp. 497-594, pis. 26-30. 

 Locy, W. A. 



'99. New Facts regarding the Development of the Olfactory Nerve. Anat. Anz.; Bd. 16, No. 12, pp. 

 273-290. 

 Pinkus, F. 



'94. Ueber einen noch nicht beschriebenen Hirnnerven des Protopterus annectens. Anat. Anz.; Bd. 9, 

 No. 18, pp. 562-566. 

 Pinkus, F. 



'95. Die Hirnnerven des Protopterus annectens. Morph. Arb.; Bd. 4, pp. 275-342, Taf. 13-19. 



EXPLANATION OF PLATES V-VL 



ABBREVIATIONS. 



n. olf. I. Lateral division of the olfactory nerve. 



n. olf. m. Median division of the olfactory nerve. 



n. opt. Optic nerve. 



thl'ence. Thalamencephalon. 



trt. olf. Olfactory tract. 



va. sng. Blood-vessel. 



PLATE V. 



Figures 1 to 6, inclusive, were drawn under the author's direction by Mr. Hayashi; Figures 7, 8, and 9 were 

 drawn by the author. All the figures show the natural sizes of the brains except Figure 4, which has been enlarged 

 twice; and all are dorsal views except Figures 3, 6, and 8, which are seen from the ventral side. 

 Fig. 1. Brain of an adult Squalus acanthias. 

 Fig. 2. Brain of an adult Mustelus canis. 



Fig. 3. Forebrain and olfactory cups of Mustelus canis; ventral view. 

 Fig. 4. Brain of an adult skate, Raja sp.? 

 Fig. 5. Brain of Carcharias littoralis. 



Fig. 6. Ventral view of that part of the brain of Carcharias anterior to the optic nerves. 

 Fig. 7. Forebrain and olfactory apparatus of the bonnet-head, Sphyrna tiburo. 



Fig. 8. Part of the brain of Sphyrna seen from below to show the point at which the new nerve enters the brain- 

 wall. Note the asymmetry of the ganglia (gn, gn') on the new nerves. 

 Fig. 9. Brain of Scoliodon terrse-novae. 



