3U4 THE TUBE-NOSED SWIMMERS — TUBIN ARES. 



3. CT3. gularis. Adult (?) : Above, quite uniform dark sooty grayish, the concealed bases of 



all the feathers, however, white ; greater and middle wing-coverts lighter and less sooty 

 grayish, but without distinct light edges ; upper tail-coverts and tail uniform rather light 

 sooty gray, the inner webs of the latter paler, on the outer finely mottled ; chin, throat, 

 and crissum immaculate white ; other lower parts white beneath the surface, but this 

 overlaid by sooty gray, nearly uniform over abdomen and flanks. Under side of wings 

 mainly white, the anterior and outer border dusky. Wing, 9.88-10.00 inches ; tail, 

 3.95-4.00, its graduation about .90; culmen, 1.02-1.03; depth of bill at base, .46-.50 ; 

 tarsus, 1.20-1.37 ; middle toe, with claw, 1.55-1.70. Hab. South Pacific Ocean. 



4. CB. jamaicensis. 1 Adult : Uniform sooty brown, lighter beneath, darkest on occiput and 



sides of head ; upper tail-coverts pale lavender-gray, sometimes tinged with bull'. Bill, 

 legs, and feet entirely black ; iris (?). Wing, 11.00 inches ; tail, 5.00, its graduation, 

 1.30-1.50 ; culmen, 1.15-1.20 ; depth of bill at base, .60 ; tarsus, 1.40 ; middle toe, 1.70- 

 1.80. Hab. Jamaica (breeding in Blue Mountains). 



CEstrelata haesitata. 

 THE BLACK-CAPPED PETREL. 



Proccllaria hasitata, Kuiil, Mon. Proc. Beitr. Zool. 1820, 142, no. 11 (excl. syn.). — TBMM. PI. Col. 



416. — Newton, Zoologist, X. 1852, 3691. 

 JSstrclata hasitata, Coues, Pr. Ac. Nat. Sci. Philad. 1866, 139 ; Key, 1872, 328 ; Check List, 1873, 



no. 585. 

 (Eslrelata homtata, Pidgw. Norn. N. Am. B. 1881, no. 717. — Coues, 2d Check List, 1882, no. 819. 

 sEstrclala diabolica, Bonap. Consp. II. 1856, 189 (ex "Proccllaria. diabolica, L'Heuminier"). 

 Proccllaria meridional is, Lawr. Ann. Lye. N. Y. IV. 1848, 475 ; in Baird's B. N. Am. 1858, 827. 



Had. Warmer parts of the Atlantic Ocean, straying to Florida, England, and France. Sandwich 

 Islands ? 



Sp. Char. Adult : " Forehead, sides of head, neck all round, upper tail-coverts, base of tail, 

 and all under parts white ; back clear bistre-brown (nearly uniform, but the feathers often with 

 paler or ashy edges), deepening on the quills and terminal half of tail ; crown with an isolated 

 blackish cap, and sides of head with a black bar (younger birds with the white of the head and 

 neck behind restricted, so that these dark areas run together) ; bill black ; tarsi and base of toes 

 and webs flesh-colored (drying yellowish) ; rest of toes and webs black. Young: Extensively 

 dark below i" (< 'hues). 



Total length, about 16.00 inches ; "wing, 12 ; tail, 5j, cuneate, its graduation, U ; tarsus, If ; 

 middle toe and claw, 2J ; bill, If, 5 deep at base, f wide ; tube, -J" (Coues). 



A specimen from the Sandwich Islands (No. 61259 ; V. Knudsen, coll.), labelled "Puffinus 

 mrriditmalis,'" differs from the above diagnosis in several particulars, and may possibly be distinct. 

 The entile upper parts, except forehead, are continuously uniform dusky, nearly black on the head, 

 the nape, back, and scapulars more grayish brown; this dark color even covers uniformly the 

 entire side of the head and neck, except that portion of the former before the eye. and thence 

 downward and backward across the malar region. The feathers of the nape and side of the neck, 

 however, are white immediately beneath the surface, this color showing conspicuously wherever 



1 CEstuelata jamaicensis (Bancroft) Newton. 



Procellaria jamaicensis, Bancr. Zool. Jour. V. 1828, 81. 



(Estrclata jamaicensis, A. & E. Newton, Handb. Jam. 1S81, 117. 



Pterodroma caribbim, Carte, P. Z. S. 1866, 93, pi. x. 



(Eslrelata caribcea, AuCT. 



Blue Mountain Duck, Gosse. 

 This species is introduced into the synopsis on account of the possibility of its occasional occurrence off 

 the South Atlantic coast of the United States. 



