BIRDS OF NOETH AND MIDDLE AMEBIC A. 205 



Centronyx ochrocephalus Aiken Ridgway, Am. Nat., vii, Apr., 1873, 237 (El Paso 

 Co., Colorado; coll. C. E. Aiken). — Coues, Check List, 1873, no. 157 bis. — 

 Baied, Beewee, and Eidgivay, Hist. N. Am. Birds, ii, pi. 46, fig. 6. (See 

 Ridgway, Bull. Essex Inst., v, Nov., 1873, 190; Scott, Am. Nat., vii, 1873, 

 564; Coues, Am. Nat., vii, 1873, 696.) 



Genus COTURNICULUS Bonaparte. 



CoHurniculus Bonaparte, Geog. and Comp. List., 1838, 32. (Type, Fringilla 

 passerina Wilson. ) 



Small terresti'ial Fringillidse with the sixth primary abruptly shorter 

 than the seventh; hallux shorter than outer toe, but decidedly longer 

 than inner toe, its claw shorter than distance from nostril to tip of 

 maxilla; edge of wing yellow; adult without black streaks on under 

 parts. Differing from Aiamodrcumis in having the outermost (ninth) 

 primary longer than the seventh; the tail relatively shorter (shorter 

 than wing by nearly length of tarsus), emarginate, or slightly double 

 rounded, with lateral rectrices but little if any shorter than middle 

 pair and much less acuminate. 



Mange. — Temperate North America, including whole of Mexico; 

 Greater Antilles. (Monotypic.) 



If Ooturnicul/us is to be recognized even as a subgenus it must neces- 

 sarily be restricted (among known species) to C. swvanna/rum and its 

 continental subspecies, since the two species usually associated are 

 found on comparison to differ quite decidedly in structural details, 

 which agree with those of Ammodramiis. 



The South American species usually referred to Ooturniculus are 

 still more different structurallj^, and have been removed by me into 

 another genus. ^ 



KEY TO THE SPECIES AND SHESPECIBS OF COTUENICULUS. 



a. Tarsus longer (averaging 19.81 or more). 



h. Wing and tail shorter (wing averaging 56.64, tail 39.12); coloration slightly 

 darker. (Jamaica; Porto Rico; Curagao; Bonaire.) 



CoturniculuB savannarum savannarum (p. 206) 

 66. Wing and tail longer (wing averaging 60.96, tail 44.20); coloration slightly 

 paler. (Eastern United States; Bahamas; Cuba.) 



Coturniculus savannarum passerinus (p. 207) 

 Off. Tarsus shorter (averaging 19.30 or less). 



6. Much darker in color (as in C. c. savannarum) ; wing and tail much shorter, bill 



stouter (wing averaging 57.66, tail 42.93, depth of bill at base 7.62). (Coast 



district of Vera Cruz to Chiapas.) ..Ooturniculus savannarum obscurua (p. 209) 



66. Much paler (palest of all); wing and tail much longer, bill more slender (wing 



averaging 62.23, tail 46.99, depth of bill at base 6.10). (Western United 



States and south over plateau of Mexico.) 



Coturnioulus savannarum bimaoulatus (p. 209) 



^Myospiza Ridgway, Auk, xv, July (pub. May 14) , 1898, 224. (Type, Fringilla ma- 

 nimbe Lichtenstein. ) 



