148 BULLETIN 60, UNITED STATES NATIONAL MUSEUM. 
f. A distinct web between basal portion of inner and middle toes. 
g. Axillars uniform dusky; primaries extensively white basally; larger, 
with stouter bill and feet (wing more than 180 mm.), 
Catoptrophorus (p. 314). 
gg. Axillars white; primaries without white at base; smaller, with 
more slender bill and feet (wing about 175 mm.), 
Pseudototanus (extralimital).2 ~ 
ff. No web between inner and middle toes. 
g. Planta tarsi scutellate; axillars white, with or without gray bars; tail 
barred. 
h. Tarsus more than one and a half times as long as middle toe without 
claw. 
i, Nasal groove extremely short, extending for not more than onc- 
. fourth the length of maxilla; symphysis of mandible posterior 
to the middle...............--- Erythroscelus (extralimital).) 
ii. Nasal groove longer, extending for more than one-fourth (usually 
more than one-third) the length of maxilla; symphysis of 
mandible anterior to the middle. 
j. Nasal groove extending half way to tip of maxilla; bill stouter, 
tarsus slightly less than one-third as long as wing. 
k. Bill stouter (its depth at base equal to about one-seventh the 
length of exposed culmen), more compressed, distinctly 
recurved or upturned for distal half, the exposed culmen 
nearly as long as tarsus; tarsus less than one-third as long 
as wing; rump and lower back white..... Glottis (p. 322). 
kk. Bill more slender (its depth at base equal to not more than 
one-eighth the length of culmen), less compressed, not 
distinctly recurved, the exposed culmen much shorter 
than tarsus; tarsus one-third as long as wing; rump and 
lower back dusky............-.--.-. Neoglottis (p. 329). 
jj. Nasal groove extending only one-third the length of maxilla; 
bill more slender; tarsus much more than one-third as long as 
WAN Gs cepheivntoncscinare sand ee eee tisetwers Nliornis (extralimital).¢ 
hh. Tarsus decidedly less than one and a half times as long as middle 
toe without claw. 
7. Exposed culmen shorter than tarsus; nasal groove broad; outer- 
most primaries with shafts white; metasternum 4-notched. 
Rhyacophilus (p. 346). 
i. Exposed culmen not shorter than tarsus; nasal groove narrow; 
outermost primaries with shafts dark brown; metasternum 
DNGtChEM is deena knnesaisuaaa es geceemnie Tringa (p. 352) 
gg. Planta tarsi reticulate; axillars and tail plain brownish gray. 
Heteroscelus (p. 365). 
ee. Nasal groove extending for more than two-thirds the length of maxilla; 
inner webs of remiges crossed by a broad band of white. .Actitis (p. 371). 
@ Pseudototanus Hume, Stray Feathers, vi, 1878, 488; type, Totanus guttifer Nord- 
mann.—Pseudoglottis Stejneger, Zeitschr. Ges. Orn., i, 1884, 223; type, Totanus 
guttifer Nordmann. Northeastern Asia. (Monotypic.) 
b Erythroscelus Kaup, Skizz. Entw.-Gesch. Natiirl. Syst., 1829, 54; type, Scolopax 
fusca Linneus.—Erythroscelis Sharpe, Cat. Birds Brit. Mus., xxiv, 1896, 409, in syn- 
onymy of genus Totanus. Northern Europe and Asia, southward in migration. 
(Monotypic.) 
¢ Ihornis Kaup, Skizz. Entw.-Gesch. Natiirl. Syst., 1829, 156; type, Totanus stag- 
natilis Bechstein.—Ilyornis Kaup, Skizz. Entw.-Gesch. Natiirl. Syst., 1829, 195. 
