BIKDS OF NORTH AND MIDDLE AMERICA. 213 



c. Upper parts without distinct black streaks. (Atlantic coast of United States, 

 from southern Massachusetts to South Carolina.) 



Ammodramus maritimus maritimus (i>. 214) 

 cr. Upper parts with distinct black streaks. 



(1. Under parts not heavily streaked with black; if distinctly streaked, the 



ground color distinctly grayish or gray and buff}-. 



('. Faler; middle rectrices with median dusky streak very narrow, equal in 



width to much less than half the total width of inner web; under parts 



shaded M'ith pale gi-ay laterally and (sometimes) across chest, the latter 



usually pale buff streaked with pale grayish. (Coast of Texas.) 



Ammodramus maritimus sennetti (p. 218) 



ee. Darker; middle rectrices with median dusky stripe very broad, its width 



equal to at least half the total width of inner web; under parts shaded 



with deep gray or gray and buff laterally and across chest, the latter 



streaked with dusky or black. 



/. Chest, sides, and flanks grayish, with little if any Ijuff; upper parts with 



less black. 



g. More uniform in color, especially the upper ^jarts, where the l^lackish 



streaks are less sharply contrasted with the general olivaceous color; 



under parts more grayish, with the darker streaks more extensively 



diffused, even the throat sometimes streaked. '(Gulf coast of 



Florida.) Ammodramus maritimus peninsulae (p. 216) 



gg. Less uniform in color, especially the ujiper parts, where the l:)lackish 

 streaks are sharply contrasted with the more varied ground color; 

 under parts less grayish, with the darker streaks more restricteci 

 (whole throat immaculate). (Vicinity of Charleston, South Caro- 

 lina and southward.) 



Ammodramus maritimus macgillivraii ' (p. 216) 



//: Chest, sides, and flanks deep buffy; upper parts with more black. 



(Coastof Louisiana, etc., in summer; coast of Texas, western Florida, 



and, occasionally, vicinity of Charleston, South Carolina, in winter.) 



Ammodramus maritimus fisheri (p. 217) 

 dd. tender jyarts heavily streaked with black on a white ground. (East coast 

 of Florida, south of Matanzas Inlet.) . . .Ammodramus nigrescens (p. 219) 

 bh. Outermost (ninth) primary equal to fifth, or longer; smaller (tarsus averaging 

 less than 21.59). 

 €. Back and scapulars conspicuously streaked with grayish white or Imffy 

 whitish; superciliary stripe deep buff, very strongly contrasted with the 

 deep brown lateral stripes of pileum; chest, sides, and flanks distinctly 

 streaked Avith black or dusky, or else deep buff, with or without distinct 

 black or duskj^ streaks. 

 d. Larger, with longer bill (exposed culmen 11.94 or more); chest, sides, and 

 flanks conspicuously and sharply streaked with black or dusky, on a 

 paler (often whitish) buffy ground; average measurements, wing 57.15, 

 tail 48.01, exposed culmen 12.45, tarsus 20.83, middle toe 16.26. (Atlan- 

 tic coast of United States, north to INIassachusetts. ) 



Ammodramus caudacutus caudacutus (p. 220) 

 dd. Smaller, with shorter bill (exposed culmen not more than 10.67); chest, 

 sides, and flanks deep buff, less distinctly (rarely sharply or conspicu- 

 ously) streaked, the first sometimes immaculate; average measure- 



' A very unsatisfactory subspecies, the characters being intermediate between those 

 of J. m. marihmnfi and A. vi.Jishcri, or, in some cases, between the former and ^. 

 m. iKninsuhc. 



