. .Oherholser—Review of the Plover Genus Ochthodromus 521 
mentioned groups, distinctly from Eupoda and Pernettyva. 
From Pluviorhynchus, Pagolla differs in having the wing only 
4 times the length of the tarsus, the bill relatively wider and 
only 7/lO the length of the head; the dertrum more than I /2 
length of the bill; and the tarsus more than li /4 times the length 
of the exposed culmen. 
Mr. Mathews has already noted^ the fact that Ochthodromus 
Keichenbach is preoccupied by Ochthedromus LeConte^ for a 
genus of Coleoptera; and he has therefore proposed the generic 
name Pagolla for Charadrius wilsonia Ord as an “alternative’’ 
name in ease that Ochthrodromus Reichenbach be considered 
the same as Ochthedromus LeConte. 
The forms of this genus are: 
Pagolla wilsonia (Ord). 
Pagolla ivilsonia rufinucha Ridgway. 
Cirrepidesmus Bonaparte. 
Cirrepidesmus Bonaparte, Comptes Rendus Acad. Sei., 
XLIII, No. 8 , August 26-31, 1856, p. 417 (type, by tautonymy, 
Charadrius pyrrhothorax Gould [ =' Charadrius atrifrons 
Wagler]). 
Diagnosis, —Similar to Pagolla^ but wing 8 — 8 I /2 times the 
length of exposed culmen; tail 31/2 times the length of exposed 
culmen, but more slender and much less turgid at tip, the gonys 
less strongly ascending and not sharpely angled; exposed culmen 
3/5 of the length of the head; and tarsus 2 times the length of 
exposed culmen. 
Description. —Wing about 2i/^ times the length of the tail, 
8—8% times the length of the exposed culmen, and 4—4i/4 
times the length of the tarsus; tail square or rounded, the two 
middle rectrices projecting beyond the rest, its length about 
3 I /2 times the length of the exposed culmen, and 1% times the 
length of the tarsus; bill rather long and slender, the tip only 
moderately expanded vertically, the gonys not sharpely angled 
and not very strongly ascending; exposed culmen 3/5 of the 
length of the head, 3—3/23 times the height of bill at base, 
and 2 %—31^ times its breadth at loral feathering; dertrum 
y^. —11/20 of the length of the exposed culmen; tarsus 2 times 
^Mathews, Novit. ZooL, XVIII, No. 1, June 17, 1911, p. 5. 
2 Ann. Lyc. Nat. Hist., N. Y.. IV, 1848, p. 453. 
