522 Wisconsin Academy of Sciences^ Arts^ and Letters. 
the length of the exposed culmen, and 1 4/5—2 times the length 
of the middle toe without claw; bare portion of tibia equal to 
the middle toe without claw, or only 4/5 as long. 
Type.—CJiaradrius atrifrons Wagler. 
Remarks. —From PluviorhyncJins, Pagoa, and Pagolla the 
present group is easily distinguishable by its bill alone, which is 
weaker with a much less swollen tip; and Cirrepidesmus is very 
different otherwise, as a comparison of the above descriptions 
will readily show. From Eupoda it differs in having the wing 
8—81/2 times the length of the exposed culmen, and 4—4^/2 
times the length of the tarsus; the tail 3% dimes the length of 
the exposed culmen; the bill shorter, broader, and stouter, the 
exposed culmen only 2 4/5—3i/4 times the width of bill at loral 
feathering; the tip of the bill more turgid; the gonys more as¬ 
cending; exposed culmen 3/5 of the length of the head; dertrum 
about 1/2 the length of the exposed culmen; and tarsus 2 times 
the length of the middle toe without claw. For the differences 
distinguishing Cirrepidesmus from Pernettyva consult the Key 
to Genera on page —. 
While CJiaradrius mongolus Pallas is undoubtedly generically 
the same as CJiaradrius atrifrons Wagler, it differs slightly in 
having a relatively shorter and stouter bill. 
Mr. Mathews has used the name CJiaradrius atrifrons Wagler^ 
for CJiaradrius pyrrJiotJiorax CorAd} but without giving any 
reasons therefor or any reference to its place of publication. 
The two names apparently refer to the same bird, as does also 
CJiaradrius inconspicuus Wagler^. Since CJiaradrius atrifrons 
Wagler is found to have anteriority it must be used for the 
species. 
The two species referable to this genus are: 
Cirrepidesmus atrifrons -(Wagler). 
Cirrepidesmus mongolus (Pallas). 
CJiaradrius Linnaeus. 
CJiaradrius Linnaeus, Syst. Nat., ed. 10, I, 1758, p. 150 (type, 
by tautonymy, CJiaradrius Jiiaticula Linnaeus). 
Aegialitis Boie, Isis (von Oken), X, 1822, p. 558. (type by 
ilsis (von Oken), XVII, 1829, p. 650 (Bengal, India). 
^Birds Australia, III, pt. 1, April 2, 1913, p. 81. 
3 Isis, XVII, 1829, p. 651. Cf. Oberholser, Proc. U. S. Nat. Mus., XXII, 
April 23, 1900, p. 206. 
