OF ARTS AND SCIENCES. 47 



numbers of small tadpoles in Carter Lake by the 22d of Jul)-. 

 The following sixteen breeding birds are characteristic of this up- 

 per Canadian zone in New Hampshire : Canadian Spruce Grouse 

 ( Canachites canadensis canace ) , American ( roshawk ( Accipiter 

 atricapillus) , Arctic Three-toed Woodpecker {Picoides arcti- 

 cus), American Three-toed Woodpecker (Picoides americanus), 

 Yellow-bellied Flycatcher (Empidonax jlaviventris) , Canada 

 Jay (Perisoreus canadensis) , Rusty Blackbird (Scolecophagus 

 carolinus), Canadian Pine Grosbeak (Pinicola enucleator leu- 

 cura), White-winged Crossbill (Loxia leucoptet a) , Pine Siskin 

 (Spinas pi mis), Tennessee Warbler (Helminthophila peregrind) , 

 Cape May Warbler (Dendroica tigrina), Black-poll Warbler 

 (Dendroica striata) , Wilson's Warbler ( Wilsonia pusilla) , Hud- 

 sonian Chickadee (Parus hudsonicus), and Bicknell's Thrush 

 ( Hylocichla alicice bicknelli ) . 



Of mammals characteristic of this area are the Rock Vole 

 (Microtus chrotorrhinus) (?), Canada White-footed Mouse (Pe- 

 rotnyscus canadensis), Woodland Jumping Mouse (Napceozapns 

 insignis), Canadian Red Squirrel (Sciurus hudsonicus gynvii- 

 cus), Smoky Shrew (Sorex fumeus) , Water Shrew (Sorex albi- 

 barbis), Canada Lynx (Lynx canadensis), Sable (Mustela amer- 

 icana), Pennant's Marten ( Mustelta pemianti) . 



In addition to the species more or less strictly confined to 

 each of these two subdivisions of the Canadian zone, may be 

 mentioned a few which are common to the area as a whole. 

 Such are Saw- whet Owl (Nyctala acadica), Hairy Woodpecker 

 {Dry abates villosus), White-throated Sparrow (Zonotrichia albi- 

 collis), Slate-colored Junco (Junco hyemalis), Nashville War- 

 bler (Helminthophila rubricapilla) , Myrtle Warbler (Dendroica 

 coronato), Winter Wren (Olbiorchilus hiemalis), Red-breasted 

 Nuthatch {Sitta canadensis), Golden-crowned Kinglet (Regulus 

 satrapa), and Olive-backed Thrush (Hylocichla ustulata szvain- 

 sonii) ; also the following mammals : Northern Virginia Deer 

 (Odocoileus virginianus barealis), Canada Porcupine (Erithizon 

 dorsatutn), Eastern Varying Hare (Lepus americanus virginia- 

 nus), Mink (Putorius vison) , Black Bear (Ursus americanus) , 

 Masked Shrew (Sorex persona/us) . 



