168 PRiECOCIAL GRALLATOEES — LIMICOL^. 



Wing luiir-b)'OWii ; lower edge of joint, broad uuirgius and tips to greater coverts, margins to 

 secondaries broadening inwardly, basal liah'es of outer webs of sixth and remaining primaries, first 

 quill-shaft entirely, the others more or less, white. Up[ier tail-coverts : central leathers light brown 

 margined with white, the side ones pure \vhite. Tail : first or outer rectrix white, with an oblong 

 longitudinal spot of pale lirown on the inner web ; second light brown, with white shaft and tip ; 

 the rest darkei' brown, witli iirown shafts and white tips, the white decreasmg on the two centrals. 

 Bill black ; legs deep blackish gray ; claws black." 



"Length of wing, 5.4 inches ; tail, 2.0 ; bill in fiont, .75 ; tarsi, 1.18 ; middle toe (claw, .17), 

 .85." (SwiNHOE, P. Z. S. 1870, 11. 140.) 



Genus OCHTHODROMUS, Keichenbach. 



■ Ochthndromiis, Keiche.nb. Av. Syst. 1S53, Intiod. p. xviii (type, CJiniadriiis ll'ihmiius, Okd). 



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 distincti\'e 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 Geoffroiji, Wagl., which agrees minutely in all 

 the details of structure, except that the legs are very decidedly longer. There is also considerable 

 similai-ity in the style of coloration, especially in the winter plumage ; but in summer dress, 0. 

 Gioffriiiji 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. Aljove, brownish gray ; forehead and lower parts white. ^ : Fore-part of the 

 crown, hires, and jugular collar, black. $ : The black rejilaced by brownish gray or light brown- 

 ish, paler on the lores. 



Var. Wilsonius. Sides of the occiput and upper part of najie slightly tinged with bufiy ochra- 

 ceous. Fiiualr with the lores nearly white. Hah. Coasts of South Atlantic (and Gulf V) States. 



A'ar. rufinuchus.i Sides of occiput and upper part nf nape deep rusty. Female with lores 

 distinctly brownish gray. Colors generally darker in Ijoth sexes. Hab. West Indies (and other 

 tropical coasts ?). 



Ochthodromus Wilsonius. 



WILSON'S PLOVER. 



Charadrius Wilsonius, Oed, ed. "Wils. IX. 1825, 77, pi. 73, fig. 5. — Nutt. Man. 11. 1834, 21.— 

 AuD. Orn. Biog. III. 1835, 73; V. 1839, 577, ])!. 284 ; Synop. 1839, 223 ; B. Am. V. 1842, 214, 

 111. 319. 



^yialiks Wilsonius, BoNAP. Consp. List, 1838, 45. — CouES, Check List, 2d ed. 1882, no. 585. 



u^yialitis Wilsmius, Cass, in Baird's B. N. Am. 1858, 693. — Baikd, Cat.N. Am. B. 1859, no. 506. — 

 CoUES, Key, 1872, 244 ; Check List, 1873, no. 398. 



Ochthodromus Wilsonius, Reich. Sj'st. Av. 1853, xviii. — Ridgw. Nom. N. Am. B. 1881, no. 522. 



? Charadrius crassiroslris, Srix, Av. Bras. IL 1825, 77, pi. 94. 



Hab. Atlantic sea-coast of temperate North 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 OCIITHODKOMUS W1L.SONIUS EUFIXUCHUS. 



^.Charadrius crassiroslris, Swx, Av. Bras. 11. 1825, 77, pi. 94 (cf. Pelz. Oiii. Bras. 1870, 297), 

 .^ginlilis Wilsonius, var. rufinuchus, RiDGW. Am. Nat. A'lll. Feb. 1874, 109 (Spanlshtowii, 

 Jamaica). 

 There is now some dmdit whether the characters originally ascribed to tliis supposed race are constant. 

 Ill the aliseni'e of sufficient material tn deeiile the point, however, we for the present keep it separate. 



