TABLE OF CONTENTS. V 



I'use 



96. Falco rusticolus obsoletus Black Gyrfalcon (PI. X, Fig. 1) 280 



97. Falco mexicanus Prairie Falcon (PI. X, Figs. 2, 3) 288 



98. Falco peregriuus aim turn Duck Hawk (PI. X, KigH. 5-7) 292 



99. Falco peregrinus pealci Peale's Falcon 297 



100. Falco columbarius Pigi Hawk (PI. X, Figs. 4, 8) 298 



101. Falco columbarius suckloyi Black Merlin 302 



102. Falco rieliardsonii Richardson's Merlin 303 



103. Falco regulus Merlin 304 



104. Falco fuseo-eceriilescons Aplomado Falcon (Pl.X, FigH. 9, 10) 306 



105. Falco tinuunculus Kestrel 308 



106. Falco sparverius American Sparrow Hawk (Pl.X, Figs. 11-16) 309 



107. Falco dominicensis Cuban Sparrow Hawk 314 



108. Polyborus cheriway Audubon's Caracara (PI. XI, Figs. 1-4) 315 



109. Polyborus lutosus Guadalupe Caracara 318 



110. Paudion haliaetus carolinensis American Osprey (PL X, Fig. 17 ; PI. XI, Figs. 5-9) 320 



Family Strigid.k. Barn Owls. 



111. Strix pratincola American Barn Owl (PI. XII, Fig. 1) 325 



Family Buhonidte. Horned Owls, etc 



112. Asio wilsonianus American Long-eared Owl (PL XII, Fig. 2) 328 



113. Asio accipitrinus Short-eared Owl (PL XII, Fig. 3) 332 



114. Syrnium nebulosum Barred Owl (PL XII, Fig. 4) 335 



115. Syrnium nebulosum alleni Florida Barred Owl 333 



116. Syrnium occidentale Spotted O wl . '. *. 349 



117. Scotiaptex cinerea Great Gray Owl (PI. XII, Fig. 5) 345 



118. Scotiaptex cinerea lapponica Lapp Owl 346 



119. Nyctala tengmalmi richardsoni Richardson's Owl (PL XII, Fig. 6) 347 



120. Nyctala acadica Saw- whet Owl (PL XII, Fig. 7) 350 



121. Megascops asio Screech Owl (PL XII, Fig. 8) 354 



122. Megascops asio floridanns Florida Screech Owl 358 



123. Megascops asio mccallii Texan Screech Owl 360 



124. Megascops asio bendirei California Screech Owl 361 



125. Megascops aBio kennicottii Kennicott's Screech Owl 363 



126. Megascops asio maxwelliie Rocky Mountain Screech Owl (PL XII, Fig. 10) 363 



127. Megascops asio trichopsis Mexican Screech Owl (PL XII, Fig. 11) 368 



128. Megascops asio aikeni Aiken's Screech Owl 370 



129. Megascops asio macfarlanei MacFarlane's Screech Owl (PL XII, Fig. 9) 371 



130. Megascops asio saturatus Puget Sound Screech Owl 373 



131. Megascops flammeolus Flammulated Screech Owl (PL XII, Fig. 15) 374 



132. Megascops flammeolus idahoensis Dwarf Screech Owl 376 



133. Bubo virginianus Great Horned Owl (PL XII, Fig. 12) 376 



134. Bubo virginianus subarcticus , Western Horned Owl 383 



135. Bubo virginianus arcticus Arctic Horned Owl 386 



136. Bubo virginianus saturatus Dusky Horned Owl 387 



137. Nyctea nyctea Snowy Owl (PL XII, Fig. 19) 389 



138. Surniaulula Hawk Owl 392 



139. Surnia ulula caparoch American Hawk Owl (PL XII, Fig. 18) 393 



140. Speoty to cunicularia hypogaea Burrowing Owl (PL XII, Fig. 14) 395 



141. Speotyto cunicularia floridana Florida Burrowing Owl (PL XII, Fig. 16) 400 



142. Glaucidium gnoma Pygmy O wk. 403 



143. Glaucidium gnoma californicum California Pygmy Owl 407 



144. Glaucidium gnoma hoskinsii Hoskin's Pygmy Owl 408 



145. Glaucidium phalsenoides Ferruginous Pygmy Owl (PL XII, Fig. 17) 409 



146. Micropallas whitneyi Elf Owl (PL XII, Fig. 13) 411 



