586 



NATURALIST'S GUIDE TO THE AMERICAS 



Zygogeomys trichopus, Michoacan pocket 

 gopher. 



Eutamias bulleri, Buller's chipmunk. 



Callospermophilus madrensis, Mexican 

 golden-mantled chipmunk. 



Sciurus aberti barberi, Barber's squirrel. 



Sciurus douglasii mearnsi, Mearns' 

 squirrel. 



Sylvilagus floridanus orizabae, Mount 

 Orizaba cottontail. 



Odocoileus couesi, Coues' deer. 



Odocoileus hemionus calif ornicus, Cali- 

 fornia mule deer. 



Birds 



Chloroenas fasciata fasciata, band-tailed 

 pigeon. 



Rhychopsitta pachyrhyncha, thick-billed 

 parrot. 



Glaucidium gnoma gnoma, pygmy owl. 



Campephilus imperialis, Imperial ivory- 

 bill. 



Colaptes mexicanoides, Guatemalan 

 flicker. 



Dryobates villosus icastus, Chihuahua 

 woodpecker. 



Leptuas neoxenus, eared trogon. 



Trogonurus mexicanus, Mexican trogon. 



Basilinna leucotis, white-eared hum- 

 mingbird (also Canadian). 



Colibri thalassinus, Mexican violet-ear. 



Cyanolaemus clemenciae, blue-throated 

 hummingbird. 



Eugenes fulgens, Rivoli hummingbird 

 (also Canadian). 



Selasphorus platycercus, broad-tailed 

 hummingbird (also Canadian). 



Cypseloides brunneitorques brunneitor- 

 ques, chestnut-collared swift. 



Lepidocolaptes leucogaster, white-striped 

 woodhewer. 



Myiochanes pertinax pallidiventris, 

 Coues' flycatcher. 



Empidonax pulverius, Sierra Madre 

 flycatcher. 



Empidonax trepidus, Chancol flycatcher. 



Ptilogonys cinereus cinereus, Mexican 

 ptilogonys. 



Heleodytes megalopterus, Huitzilac cac- 

 tus wren. 



Troglodytes brunneicollis brunneicollis, 

 brown-throated wren (also Canadian). 



Troglodytes brunneicollis cahooni, Ga- 

 boon's wren. 



Catharus occidentalis olivascens, olive 

 nightingale thrush. 



Turdus migratorius propinquus, western 

 robin. 



Ridgwayia pinicola, Ridgway's thrush. 



Sialia mexicana bairdi, chestnut-backed 

 bluebird. 



Myadestes townsendi. Townsend's 

 solitaire. 



Penthestes sclateri, Mexican chickadee. 



Sitta carolinensis aculeata, slender-billed 

 nuthatch. 



Sitta carolinensis mexicana, Mexican 

 nuthatch. 



Sitta pygmaea pygmaea, pygmy nuthatch. 



Sitta pygmaea leuconucha, white-naped 

 nuthatch. 



Certhia familiaris albescens, Sierra 

 Madre creeper. 



Certhia familiaris alticola, Mexican 

 creeper (also Canadian). 



Aphelocoma unicolor coelestis, cerulean 

 jay. 



Cyanocitta stelleri diademata, long- 

 crested jay. 



Cyanocitta stelleri azteca, Aztec jay 

 (also Canadian). 



Oreothlypis superciliosa, Hartlaub's 

 warbler. 



Peucedramus olivaceus, olive warbler. 



Dendroica auduboni nigrifrons, black- 

 fronted warbler. 



Cardellina rubrifrons, red-faced warbler. 



Setophaga picta picta, painted redstart. 



Ergaticus ruber, red warbler (also 

 Canadian) . 



Ergaticus versicolor, pink-headed warb- 

 ler (also Canadian). 



Piranga hepatica, hepatic tanager. 



Hesperiphona vespertina mexicana, Mex- 

 ican evening grosbeak. 



Spinus pinus macropterus, Mexican 

 pine siskin (also Canadian). 



Junco phaeonotus phaeonotus, Mexican 

 junco (also Canadian). 



Melospiza melodia goldmani, Goldman's 

 song sparrow. 



Pipilo maculatus maculatus, Mexican 

 spotted towhee. 



e. Fir-spruce Association (Canadian 

 and Hudsonian Zones). This zone char- 

 acterized by boreal species of plants 

 and animals occupies the upper slopes 

 to timberline at 13,000 to 13,500 ft. of the 

 highest mountains of the Republic. It 

 includes very limited areas on the ex- 

 treme upper slopes of the San Pedro 

 Martir Mountains in northern Lower 

 California, a few peaks along the crest 

 of the Sierra Madre Occidental, and more 

 extensive belts above about 9000 ft. 

 altitude, on the higher mountains of 

 southern Mexico, including those of the 

 state of Chiapas, which form part of 

 the mountain system of Central Amer- 

 ica. It is doubtful whether Canadian 

 and Hudsonian elements well developed 

 farther north can satisfactorily be 

 separated in Mexico, owing to their 

 limited extent. 



