14 LIST OF ILLUSTRATIONS 



PAGE 



Fig. 103. Front View of the Head of the American Manatee. Lips di- 



x arii-sited) ..... 392 



Fig. 104. Front View of the Head of the American Manatee. Lips 



contracted . . . 392 



Fig. lor,. South American Manatees. Attitudes of swimming . 395 



Fig. 106. 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 Pifion Mouse. Life size from nature . . 416 



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 zibethicus) . . 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 . . . . .456 



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



Fig. 126. Mounted Specimen of Fox . . 460 



Fig. 127. Model of Young Bear . . 465 



Fig. 128. Mounted Specimen of Young Polar Bear . . . 467 



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



Fig. 130. Rhea Americana . . 471 



