586 



NATURALIST'S GUIDE TO THE AMERICAS 



Zygogeo7nys trichopus, Michoacan pocket 

 gopher. 



Eutamias bulleri, BuUer's chipmunk. 



Callospermo'philus 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 californicus, Cali- 

 fornia mule deer. 



Birds 



Chloroenas fasciata fasciata, band-tailed 



pigeon. 

 Rhychopsitia pachyrhyncha, thick-billed 



parrot. 

 Glaucidium gnoma gnoma, pygmy owl. 

 Campephilus imperialis, Imperial ivory- 

 bill. 

 Colaptes mexicanoides, Guatemalan 



flicker. 

 Dryobates villosus icashis, Chihuahua 



woodpecker. 

 Leptuas neoxenus, eared trogon. 

 Trogonurus mexicanus, Mexican trogon. 

 Basilinna leucotis, white-eared hum- 

 mingbird (also Canadian). 

 Colibri thalassinus, Mexican violet-ear. 

 Cyanolaetnus 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, Ca- 



hoon'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. 



