IV 



PAGE 



Branta bernida 144 



bernicla bernida 144 



bernida collaris 144 



bernida glaucogastra . . 144 



canadensis 62, 81, 104 



canadensis canadensis. 



12, 147 

 canadensis hutchinsi . . 50 



glaucogaster 144 



Bryozoa 84 



Bubo virginianus virgin- 



ianus 45 



Buccinum undatum 157 



Buffalo 118,158 



Buffalo Berry 61 



Bufflehead 62,73,74 



Bug, Ambush 60 



Bumble-bee 60, 156 



Bunting, Indigo 148, 165 



Lark 177 



Snow 14, 164 



Buteo borealis 63 



borealis calurus 134 



platypteriis 45, 162 



Butterflies 126, 141 



black and white ad- 

 miral 127 



Butterfly, Common Blue. 108 



Hepatica 108 



Hunter's 141 



Thistle 108 



Butterwort 61, 124 



Caddis larva 127 



Calidris leucophaea 105 



Calopogon 124, 173 



pulchellus 173 



Calypso 173 



Camberwell Beauty 108 



Camnula 42 



Campanula 61 



rotundifolia 61, 150 



Camptosorus rhizophyllus. . 150 



Canachites canadensis 63 



franklini 63 



Canadian wild life photo- 

 graphs, exhibition of. 179 



Cannabis saliva 177 



Canvasback 62 



Carabocrinus 85 



Cardinal 14 



Caribou 158 



Dawson 103 



Carpodacus cassini 13 



purpureus 164 



purpureus purpureus i%, 148 

 Carter, Thomas D., article 



by 176 



Carterocephalus palaemon. . 142 



Carychium exile 132 



Cascara 169 



Sagrada 3 



Cassels, Elsie, article by . . 58 



Cassiope tetragona 157 



Castilleja 61 



Castor canadensis 65 



The Canadian Field-Naturalist 

 INDEX Continued 



PAGE 



Catbird 149 



Cathartes aura septentrion- 



alis 178 



Catoptrophorus semipal- 



matus semipalmatus . . 152 



Cattle, Wild 103 



Cecidomyia 171 



Cedar, Yellow 114 



Cephalanthera oregana. ... 119 



Cepphus columba 104 



grylle _ 45, 98 



Ceratiomyxa fruticulosa . . . 130 



Cerithidea newcombei 123 



Cerorhinca monocerata .... 104 



Certhia familiar is 167 



familiaris americanaAG, 149 



. familiaris montana ... 13 



familiar is occidentalis. 136 



familiaris zelotes 13 



Ceryle alcijon ... 45, 63, 134, 162 



Cestod 160 



Chaetetes petropolitanus ... 84 



ramosus 84 



Chaetura pelagica 45, 147 



Chamaecyparis nootkaiensis 1 14 



Charadrius dominicus 63 



dominicus fulvtis 105 



Charifonetta albeola 62 



Check List of The Birds of 



Illinois, Review of . . . 179 

 Checker-spot, Harris' .... 141 



Cheirocrinus 86 



anatiformis 84 



Chen hyperborea 62 



hyperboreus nivalis. . . 50 

 Chickadee.. .14, 46, 78, 149, 154 



Acadian 46 



Black-capped 153, 167 



Chestnut-backed ... 13, 136 



Hudsonian 65 



Long-tailed 75 



Chipmunk 119, 127, 175 



Lake Superior 175 



Choke Cherries 3 



Chordeiles virginianus . . .64, 163 

 virginianus virgin- 

 ianus 147 



Cinquefoil, Three-toothed. 150 



Cinqfoil, Shrubby 61 



Circinaria concava 132 



Circus hudsonius 63, 162 



Citellus 119 



Cladoceran 156 



Clangula clangula ameri- 



cana 62 



Cleiocrinus 85 



Cliff-Brake, Slender 151 



Clitambonites 85, 86 



Clover, Red 169 



Club, A New 58 



Coccyzus americanus am- 



ericanus 147 



erylhrophthalmus 147 



Cochlicopa lubrica 132 



Cockerell, Prof. T. D. A., 

 review of his Life of 

 Dru Drury 75 



[Vol. XXXVI 



PAGE 



Colaptes auratus 63, 163 



auratus luteus 45, 147 



cafer saturatior 134 



Columba fasciata 133 



Colymbus grisegena 76 



holboelli 27, 62, 76, 103 



Comarocystites punctatus. .-84, 85 



shumardi 85 



Comatricha typhoides 130 



Comma 108 



Compsothlypis americana. . 166 

 americana usneae. . .46, 148 



Conchostraca 95 



Condor, The, Review of 



for 1921 52 



Coneheads 41 



Contributions to Canadian 



Biology, review of . . . 158 



Coot 27, 114, 115 



American 29, 74 



Coots, An Invasion of . . . . 114 



Copper, Bronze 141 



Least 141 



Corallorhiza maculata 173 



Irifida 174 



Coregonus 65 



Cormorant, Double-crested 



45, 73, 74, 80 



Violet-green 104 



Cornus nuttalli 3 



Cornwall, Ira E., article by 121 



Corns brachyrhynchos 164 



brachyrhynchos brach- 

 yrhynchos. .... .45, 99, 147 



caurinus 135 



corax 164 



corax principalis.. 45, 50, 64 



corax sinuatus 135 



Corydalis, Pale 150 



Corydalis sempervirens . ... 150 



Cowbird 74, 98, 147, 164 



Crab, Hermit 157 



Crane 62, 105 



Little Brown 53, 76, 79 



Sandhill 53, 76, 79 



Whooping 50 



Craterium leucocephlalum.. 130 

 Creeper, Brown 



14, 46, 136, 149, 167 

 Rocky Mountain .... 13 



Sierra 13 



Cremacrinus 85 



Cricket, Fall 41 



Green Tree 44 



Raspberry-cane Tree. 42 



Spring 41 



Crickets 41 



Camel 41 



Ground 41 



Tree 41 



Criddle, Norman, articles 



by 15,41,47,66 



Crinoids 93 



Crisiivomer namaycush . . . . 66 



Crossbill 135 



American 164 



Red 46 



White-winged... 13, 46, 64 



