LIST OF ILLUSTRATIONS. 



Fig. 1, p. 41. Odobcenus rosmarus, skull of female in profile and lower jaw from above. 



Fig. 2, p. 42. Odobacenus rosmarus, skull of female from above. 



Fig. 3, p. 43. Odobcenus rosmarus, skull of female from below. 



Fig. 4, p. 93. Olaus Magnus's " Rosinarus seu Moreus Norvegicus." 



Fig. 5, p. 93. Olaus Magnus's "Porous Monstrosus Oceani Germanic!." 



Fig. 6, p. 94. Gesner's "Rosmarus." 



Fig. 7, p. 94. Gesner's "Vacca marina" (Addenda to Icones Animal). 



Fig. 8, p. 94. Gesner's "Rosmarus" (Icones Animal., 1560). 



Fig. 9, p. 95. De Veer's "Sea Horse," 1609. 



Fig. 10, p. 96. Hessel Gerard's ""Walruss," 1613. 



Fig. 11, p. 100. Martin's " "Wall-ross, " 1765. 



Fig. 12, p. 101. Buffon's " Le Morse," 1765. 



Fig. 13, p. 153. Odobcenus obesus, three views of head. 



Fig. 14, p. 156. Odobacenus obesus, skull in profile. 



Fig. 15, p. 157. Odobcenus rosmarus, skull in profile. 



Fig. 10, p. 158. Odobcenus rosmarus, skull from front. 



Fig. 17, p. 158. Odobcenus obesus, skull from front. 



Fig. 18, p. 159. Odobcenus rosmarus, occipital view of skull. 



Fig. 19, p. 159. Odobcenus obesus, occipital view of skull. 



Fig. 20, p. 160. Odabcenus rosmarus, skull from above. 



Fig. 21, p. 161. Odobcenus obesus, skull from above. 



Fig. 22, p. 162. Odobcenus obesus, young skull from above. 



Fig. 23, p. 162. Odobcenus rosmarus, young skull from above. 



Fig. 24, p. 163. Odobcenus obesu-s, young skull from front. 



Fig. 25, p. 163. Odobcenus rosmarus, young skull from front. 



J ig. 26, p. 164. Odobcenus rosmarus, skull from below. 



Fig. 27, p. 165. Odobcenus ubesus, skull from below. 



Fig. 28, p. 166. Odobcenus rosmarus, lower jaw from above. 



Fig. 29, p. 166. Odobcenus obesus, lower jaw from above. 



Fig. 30, p. 167. Odobcenus rosmarus, lower jaw from side. 



Fig. 31, p. 167. Odobcenus obesus, lower jaw from side. 



Fig. 32, p. 168. Odobcenus rosmarus, lower jaw of young from above. 



Fig. 33, p. 168. Odobcenus obesus, lower jaw of young from above. 



Fig. 34, p. 169. Odobcenus rosmarus, lower jaw of young from side. 



Fig. 35, p. 169. Odobcenus obesus, lower jaw of young from side. 



Fig. 36, p. 173. Odobcenus obesus, Cook's figure of the animal. 



Fig. 37, p. 259. Eumetopias stelleri, figures of animal 



Fig. 38, p. 317. Callorhinus ursinus, figures of animal. * 



Fig. 39, p. 321. Callorhinus ursinus, skull of female in profile. 



Fig. 40, p. 321. Callorhinus ursinus, skull of female from above. 



Fig. 41, p 322. Callorhinus ursinus, skull of female lower jaw. 



Fig. 42. p. 322. Callorhinus ursinus, skull of female from below. 



Fig. 43, p. 563. Phoca vitulina, animal. 



Fig. 44, p. 580. " Halichcerus antircticus," Peale, skull in profile. 



Fig. 45, p. 580. " Halichcerus antarcticus," Peale, skull from above. 



Fig. 46, p. 581. " Halichcerus antarcticus, " Peale, skull from below. 



Fig. 47, p. 582. "Halichcerus antarcticus," Peale, lower jaw. 



Fig. 48, p. 583. " Halicyon richardsi," Gray, skull in profile. 



Fig. 49, p. 601. Phoca fcetida, animal. 



XV 



