BIRDS OF NORTH AND MIDDLE AMERICA. 493 



flanks pale yellowish olive; under wing-coverts white; maxilla black; 

 mandible very pale brownish (yellowish in life?), usually dusky at tip; 

 iris brown; legs and feet deep horn brown (in dried skins). 



Admit mafe— Length (skins), 107.9-111.8 (109.7); wing, 52.1-53.3 

 (62.6); tail, 46.7-48.3 (47.2); exposed culmen, 9.6-10.2 (9.9); tarsus, 

 17.8-19 (18.5); middle toe, 10.7-10.9 (10.8).' 



Admit female.— Ijmgth (skins), 110.5-114.3 (112.3); wing, 62.1-53.3 

 (52.8); tail, 46.2-47 (46.7); exposed culmen, 9.9-10.2 (10.1); tarsus, 

 19-19.3 (19.1); middle toe, 9.9-10.7 (10.2).' 

 Socorro Island, Eevillagigedo group, northwestern Mexico. 

 Parula inmlaris Lawrence, Ann. Lye. Nat. Hist. N. Y., x, 1871, 4, part (Socorro 

 Island, n. w. Mexico); Proc. Boat. See. N. H., xiv, 1871, 300 (Socorro); 

 Mem. Bost. Soc. N. H., i, 1874, 2fi9, part (Socorro).— S a lvin and Godman, 

 Biol. Centr.-Am., Aves, i, 1880, 121, part (Socorro).— Sharpb, Cat. Birds 

 Brit. Mus., X, 1885, 643, part (Socorro). 

 [Parula pitiayumi] var. insularis Baied, Brewer, and Ridgway, Hist. N. Am. 



Birds, i, 1874, 207, part (Socorro). 

 Parula pitiayumi inmlaris Ridgway, Proc. U. S. Nat. Mus., iii, Aug. 24, 1880, 



171, 215 (Socorro); Nom. N. Am. Birds, 1881, no. 89. 

 [Parula pitiayumi.'] Subsp. y. Parula insularis Sharpe, Cat. Birds Brit. Mus., x, 



1885, 263, part (not description) . 

 CompsotMypis insulam Stejneqee, Auk, i, 1884, 170, part. 

 C[ompsothlypis\ graysoni Ridgway. Man. N. Am. Birds, 1887, 492 (Socorro 



Island, Revillagigedo Group, n. w. Mexico; coll. U. S. Nat. Mus.). 

 CompsotMypis graysoni Ridgway, Man. N. Am. Birds, 1887, 592; 2d ed., 1896, 

 614. -TowNSEND, Proc. U. S. Nat. Mus., xiii, 1890, 135 (Socorro).— Anthony, 

 Auk, XV, 1898, 317 (Socorro). 



Genus PEUCEDRAMUS Coues. 



Peucedramus CouEs, in Henshaw's Zool. Exped. W. lOOtli Merid., 1875, 201. 



(Type, Sylvia olivacea Giraud. ) 

 Pmcedromu^ (emendation) Salvin and Godman, Biol. Centr.-Am., Aves, i, 



1881, 142. 



Similar to Dendroica., but bill weaker, more subulate; tail more 

 deeply emarginate; a white spot at base of primaries in connection 

 with two white wing-bands. 



Bill much shorter than head, short-subulate, of uniform depth for 

 most of its length, depressed basally, compressed terminally; sub ter- 

 minal notch of maxillarv tomium indistinct or obsolete. Rictal bristles 

 weak and few (only three distinct). Wing long, pointed; eighth, 

 seventh, and sixth primaries longest, the ninth but little shorter, equal 

 to or longer than fifth; wing-tip very long (longer than tarsus). Tail 

 equal to distance from bend of wing to tips of secondaries, deeply 

 emarginate, the rectrices rather narrow. Tai'sus about one-fourth as 

 long as wing, very slender, its scutella indistinct (fused on outer side); 

 middle toe, with claw, much shorter than tarsus; basal phalanx of 



' Four specimens. '^ Three specimens. 



