BIRDS OF NORTH AND MIDDLE AMERICA. 417 



KEY TO THE OEMERA OF PHALAROPODID.E. 



a. Bill broad, somewhat expanded subterininally; nostrils separated from loral feath- 

 ering by a space about equal in length to basal depth of maxilla; tarsus not more 

 than one-sixth as long as vnng, not longer than middle toe with claw; lateral 

 membrauce of anterior toea very broad, the outer margin of the segments strongly 



convex Phalaropus (p. 417). 



aa. Bill slender, not at all expanded subterminally; nostrils close to loral feathering; 



tarsus at least one-fifth as long as wing, longer than middle toe without claw; 



lateral membrane of anterior toes narrower, the margin of the segments much less 



strongly convex, or the margin continuous, without convex segments. 



h. Bill attenuated terminally (tapering in both lateral and vertical profiles); tarsus 



shorter than exposed culmen, about one-fifth aa long as wing, but not longer 



than middle toe with claw; lateral membrane of toes l^roader, distinctly 



scalloped; tail graduated Lobipes (p. 42r-!). 



hh. Bill subulate (of nearly uniform thickness, both vertically and hcnizontaliy, 

 throughout); tarsus longer than exposed culmen, about one-fourth as long as 

 wing, decidedly longer than middle toe with claw: lateral membrane of 

 less very narrow, not distinctly if at all scalloped; tail dmildy emar- 

 ginate Steganopus (p. 430). 



Genus PHALAROPUS Brissoii. 



Phalaropus Bris.sox, Orn., vi, 17(jO, 12. (Type, by lautonyony [rhalaropus] 



phalaropus Brisson= TringafuUcaria Linnaeus.) 

 Crymophilus a Vieillot, Analyse, ISKi, G2. (Type, Phalarope afesUms dentales 



Bufion= Tringa fulicaria Linnaeus. ) 

 CryvmphUn (emendation) Voigt, Thierreich, i, LS31, 87(3, footnote. 

 (?) Amhlyrhiinchm b (not of Leach, 1816) Nuttall, Man. Orn. U. vS. and Can., 



Water Birds, 1834. 247. (Type, by original designation, Tringa glacialis 



Cimelin= T. fulicaria Linnteus?) 



.Phalaropes with broad bill, short tarsi (not more than one-sixth 

 as long as wing and not longer than middle toe with claw), and 

 nostrils decidedly in advance of loral feathering. 



Bill relatively broad (its width near tip more than one-sixth the 

 length of exposed culmen and much greater than its depth at same 

 point), the broad lateral groove of maxilla extending nearly to tip, 

 the exposed culmen a little longer than tarsus; nostril longitudinal, 

 linear or curved-linear, situated decidedly (for more than its length) 

 anterior to nearest loral feathering. Wing long and pointed, the 

 longest primary (outermost or two outermost) extending decidedly 

 beyond tips of longest tertials. Tail less than half as long as wing, 

 graduated. Tarsus short (not longer than middle toe with claw, 

 slightly shorter than exposed culmen), compressed, the acrotarsium 

 with a single continuous scries of narrow transverse scutella; outer 

 toe a little shorter than middle toe, the inner toe decidedly shorter; 

 anterior toes extensively webbed basally (the webs occupying about 



a Kpu/u6j, glacier, .^oiXeco, gaudeo (Vieillot). 

 b 'A.u/3Xiis, blunt; ^vyxos, bill, beak (Richmond). 

 40017— 19— BuU. 50, pt 8 28 



