14 LIST OF ILLUSTRATIONS 



Front View of tlie Head of the American Manatee. Lips di- 

 varicated) . ■ . . • 39J 



Front View of the Head of the American Manatee. Lips 



contracted ...... 392 



.South American Manatees. Attitudes of swimming . 395 



South American Manatees in Act of Feeding . . 395 



Fig. 107. The Flying Squirrel (Sciuroptems v. volueella.) . . -401 



Fig. 108. The Gila Chipmunk ...... 407 



Fig. 109. Life-size Head of a Specimen of Abert's Squirrel 412 



Fig. 110. True's Pinon Mouse. Life size from nature . . 410 



Fig. 111. The Deer Mouse (P.. leucopus). From life . 417 



Fig. 112. The Jumping Mouse ..... 421 



Fig. 113. Section of the Skull of a Beaver (Castor fiber) 424 



Fig. 114. Side View of the Skull of a Beaver (after Huxley) . 424 



Fig. 115. Side View of Skull of Muskrat (Fiber zibet/iicut) . 424 



Fig. 116. Bats in an Old Tree-stump ..... 429 



Fig. 117. Serotine Bat . 433 



Fig. 118. Serotine Bat. Front view ... 437 



Fig 119. Ornithological Hall of the Smithsonian Institution 447 



Fig. 120. Model of Sunfish, ready to receive the skin . 451 



Fig. 121. Anterior View of Mounted Sunfish . _ 453 



Fig. 122. Mounted Specimen of a Sunfish .... 455 



Fig. 123. Group of Jackals ..... 457 



Fig. 124. Model of Jackal ..... 450 



Fig. 125. Model of Jackal ..... 459 



Fig. 120. Mounted Specimen of Fox . 400 



Fig. 127. Model of Young Bear ..... 465 



Fig. 128. Mounted Specimen of Young Polar Bear . . . 407 



Fig. 129, Mounted Specimen of the European Pine Marten . 470 



Fig. 130. Rhea Americana ...... 471 



