BIRDS OF NORTH AND MIDDLE AMERICA. ALT 
o 
KEY TO THE GENERA OF PHALAROPODIDA. 
a. Bill broad, somewhat expanded subterminally; 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 wing, not longer than middle toe with claw; lateral 
membrance of anterior toes very broad, the outer margin of the segments strongly 
COTY CX iaisterercrata Sty eees Xs soie-cg.c cisieiandisysse dravdodsacetd-Rstiad-Aiwarnelevreranand 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. 
6. Bill attenuated terminally (tapering in both lateral and vertical profiles); tarsus 
shorter than exposed culmen, about one-fifth as long as wing, but not longer 
than middle toe with claw; lateral membrane of toes broader, distinctly 
scalloped; tail graduated..............02..20-02-022 0c ee eee Lobipes (p. 423). 
bb. Bill subulate (of nearly uniform thickness, both vertically and horizontally, 
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 doubly emar- 
BUT UG a cecicsaaisrschctctaee Nat tb dee heer hati banat eels sant Steganopus (p. 430). 
Genus PHALAROPUS Brisson. 
Phalaropus Brisson, Orn., vi, 1760, 12. (Type, by tautonyony [Phalaropus] 
phalaropus Brisson=Tringa fulicaria Linneeus.) 
Crymophilus 4 Virmor, Analyse, 1816, 62. (Type, Phalarope & festons dentalés 
Buffon=Tringa fulicaria Linnzeus.) 
Crymophila (emendation) Voter, Thierreich, i, 1831, 876, footnote. 
(?) Amblyrhynchus © (not of Leach, 1816) Nurrauy, Man. Orn. U. S. and Can., 
Water Birds, 1834, 247. (Type, by original designation, Tringa glacialis 
Gmelin=T. fulicaria Linneeus?) 
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 Jongitudinal, 
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, 
slightty shorter than exposed culmen), compressed, the acrotarsium 
with a single continuous series 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 
@ Kpupés, glacier, gedéw, gaudeo (Vieillot). 
b’AuBdbs, blunt; piyxos, bill, beak (Richmond). 
40017—19—Bull. 50, pt 8——-28 
