Oherholser—Review of the Plover Genus Ochthodromus 523 
subsequent designation [Grray, Cat. Gen. and Subgen. Birds 
Brit. Mus., 1855, p. Ill], Charad^Hus hiaticula Linnaeus). 
Diagnosis. —Similar to Cirrepidesmus, but wing 2 times the 
length of the tail, 9 times the length of the exposed culmen, and 
5 times the length of the tarsus; tail 41 / 2 —4 2/3 times the length 
of the exposed culmen, and 21/2 times the length of the tarsus; 
bill much shorter, only % the length of the head. 
Description. —Wing about 2 times the length of the tail, 9 
times the length of exposed culmen, and 5 times the length of 
the tarsus; tail slightly rounded or double emarginate, 41 / 2 — 
4 2/3 times the length of the exposed culmen, and 21/2 times 
the length of the tarsus; bill short but rather slender, the tip 
only moderately expanded vertically, the gonys not much, if 
any, angled, and only moderately ascending; exposed culmen 
about 1/2 the length of the head, 3 times the height of bill at 
base, and 31/3 times its width at loral feathering; dertrum 
about half the length of exposed culmen; tarsus 14/5 times’the 
length of exposed culmen, and 12/3 times the length of the 
middle toe without claw; bare portion of tibia about 9/10 of 
the length of middle toe without claw. 
Type .— Charadrius hiaticula Linnaeus. 
Remarks. —This group is well differentiated fro mthe other 
genera here treated, but is apparently nearest to Cirrepidesmus. 
Comparison of its characters with those of the other genera may 
readily be made by consulting the descriptions above given 
and the Key to Genera on page —. 
The name Charadrius Linnaeus must be transferred from the 
golden plovers, to which it has been hitherto applied, because 
its type has been found to be, by tautonymy, Charadrius hiati¬ 
cula Linnaeus. It thus supplants Aegialitis Boie, as already 
explained by Mr. Mathews.^ 
It has not been possible without more study than I am at 
present able to devote to the subject to determine what species 
are now properly referable to this genus. 
1 Novit. Zool. XVIII, No. 1, June 17, 1911, p. 5. 
