168 
PIUECOCIAL G-RALLATORES — LIMICOLJS. 
Wing hair-brown ; lower edge of joint, broad margins and tips to greater coverts, margins to 
secondaries broadening inwardly, basal halves of outer webs of sixth and remaining primaries, first 
quill-shaft entirely, the others more or less, white. Upper tail-coverts : central feathers light brown 
margined with white, the side ones pure white. Tail : first- or outer rectrix white, with an oblong 
longitudinal spot of pale brown on the inner web ; second light brown, with white shaft and tip ; 
the rest darker brown, with brown shafts and white tips, the white decreasing on the two centrals. 
Bill black ; legs deep blackish gray ; claws black.” 
“Length of wing, 5.4 inches ; tail, 2.5 ; bill in front, .75 ; tarsi, 1.18 ; middle toe (claw, .17), 
.85.” (Swinhoe, P. Z. S. 1870, p. 140.) 
Genus OCHTHQBROMTJS, Reichenbach. 
Ochthndromus, Reichenb. Av. Syst. 1853, Introd. p. xviii (type, Charadrius Wilsonius, Ord). 
Char. Bill large and stout, longer than the middle toe, the terminal half of the culmen strongly 
convex, and base of the gonys forming a decided angle ; basal half of the maxilla depressed decidedly 
below the level of the terminal half. Tail short, scarcely reaching the tips of the primaries. 
The distinctive characters of this well-marked genus consist chiefly^ in the large head and heavy 
bill, contrasted with the weak feet and heavy legs. An exotic species, which seems to be strictly 
congeneric with 0. Wilsonius, is the Charadrius Geoffroyi, Wagl., which agrees minutely in all 
the details of structure, except that the legs are very decidedly longer. There is also considerable 
similarity in the style of coloration, especially in the winter plumage ; but in summer dress, O. 
Geoffroyi has a rufous, instead of black, jugular band. 
America possesses but a single species, 0. Wilsonius, the type of the genus. This appears in 
the form of two well-marked geographical races, whose characters are as follows : — 
Com. Char. Above, brownish gray ; forehead and lower parts white. $ : Fore-part of the 
crown, lores, and jugular collar, black. 9 : The black replaced by brownish gray or light brown- 
ish, paler on the lores. 
Var. Wilsonius. Sides of the occiput and upper part of nape slightly tinged with huffy oclira- 
ceous. Female with the lores nearly white. Hah. Coasts of South Atlantic (and Gulf?) States. 
Var. rufinuchus. 1 Sides of occiput and upper part of nape deep rusty. Female with lores 
distinctly brownish gray. Colors generally darker in both sexes. Hah. West Indies (and other 
tropical coasts?). 
Ochthodromus Wilsonius. 
WILSON’S PLOVER. 
Charadrius Wilsonius, Ord, ed. Wils. IX. 1825, 77, pi. 73, fig. 5. — Nutt. Man. II. 1834, 21. — 
Arm. Orn. Biog. III. 1835, 73; V. 1839, 577, pi. 284 ; Synop. 1839, 223 ; B. Ain. V. 1842, 214, 
pi. 319. 
yEgialitcs Wilsonius, Bonap. Consp. List, 1838, 45 . — Cores, Check List, 2d ed. 1882, no. 585. 
JEtjialitis Wilsonius, Cass, in Baird’s B. X. Am. 1858, 693. — Baird, Cat. N. Am. B. 1859, no. 506. — 
Coues, Key, 1872, 244 ; Check List, 1873, no. 398. 
Ochthodromus Wilsonius, Reich. Syst. Av. 1853, xviii. — Ridgw. Nom. N. Am.-B. 1881, no. 522. 
? Charadrius crassirostris, Spix, Av. Bras. II. 1825, 77, pi. 94. 
Hab. Atlantic sea-coast of temperate 1701411 America, and of South America to Brazil ; both 
coasts of Middle America north to Cape St. Lucas ; West Indies ; Northwestern Peru (Taczan. 
P. Z. S. 1877, 330). 
1 Ochthodromus Wilsonius rufinuchus. 
I Charadrius crassirostris, Spix, Av. Bras. II. 1825, 77, pi. 94 (cf. Pelz. Orn. Bras. 1870, 297), 
JEgialitis Wilsonius, var. rufinuchus, Ridgw. Am. Nat. VIII. Feb. 1874, 109 (Spanishtown, 
Jamaica). 
There is now some doubt whether the characters originally ascribed to this supposed race are constant. 
In the absence of sufficient material to decide the point, however, we for the present keep it separate. 
