650 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



San Nicolas Island, Santa Barbara group, California. 



Salpindes obsoleius (not Troglodytes obsoletus Say) Grinnell (J.), Pub., i, Pasa- 

 dena Ac. Sci., 1897, 10 (San Nicolas I., California; descr. nest and eggs). 

 Salpindes obsoleius pidverius Grinnell (J.), Auk, xv, July, 1898, 238 (San Nico- 

 "^as I., California; type now in coll. U. S. Nat. Mus. ). — Bailey (Florence M. ), 

 Handb. Birds N. U. S., 1902, 443, footnote. 

 Salpindes jjulverius Grinnell (J.), Pacific Coast Avifauna, no. 3, June 25, 1902, 

 68. 



SALPINCTES OBSOLETUS EXSUL Ridgway. 



SAK BENEDICTO ROCK WREN. 



Similar in coloration to S. o. ohsoletus, but with lateral rectrices 

 more numerously barred with cinnamon-lniff (the outermost with one 

 to two distinct butf bands on inner web and three to four on outer); 

 wing averaging shorter, tail longer, bill and feet larger. 



Adult male.— Length (skins), 137.5-146 (lll.G); wing, 67.5-73(70.9); 

 tail, 53-62(55.7); exposed culmen, 18-19 (18.7); tarsus, 20.5-22.5 (21.2); 

 middle toe, 13.5-15.5 (14. 5). « 



Adult female.- — Length (skin), 144.5; wing^, 68; tail, 50; exposed 

 culmen, 18.5; tarsus, 21; middle toe, 13.5.^ 



Island of San Benedicto, Revillagigedo group, off northwestern 

 Mexico. 



Salpindes obsoletus (not Troglodytes obsoletus Say) Townsend (C. H.), Proc. U. S. 



Nat. Mus., xiii, 1890, 135 (San Benedicto I., n. w. Mexico). — Anthony, Auk, 



XV, 1898, 315 (San Benedicto I.). 

 Salpindes obsoletus exsid Ridgway, Proc. Biol. Soc. Wash., xvi, Nov. 30, 1903, 169 



(San Benedicto I., n. w. Mexico; coll. TJ. S. Nat. Mus.). 



SALPINCTES OBSOLETUS GUADELOUPENSIS Ridgway. 

 GUADALUPE ROCK WREN. 



Similar to S. o. obsoletus., but decidedl}^ darker, wing and tail shorter, 

 bill longer and stouter, and tarsi longer; 3'^oung with upper parts much 

 darker and more heavily barred or vermiculated. 



Adult male.— Length (skins), 130-146 (136>; wing, 65-68 (67.2); 

 tail, 47.5-53 (50.2); exposed culmen, 19-22.5 (21); tarsus, 20.5-23 (21.8); 

 middle toe, 12.5-14.5 (13. 5).^^ 



Adtdt female.— hengt\\ (skins), 123-137 (130); wing, 63.5-68(65.1); 

 tail, 45.5-53 (48.6); exposed culmen, 19-22.5 (20.5); tarsus, 21-22 (21.3); 

 middle toe, 12.5-14 (13.3).^ 



Guadalupe Island, Lower California. 



Salpindes obsoletus guadeloupensis Ridgway, Bull. U. S. Geol. and Geog. Surv. 



Terr., ii, no. 2, Apr. 1, 1876, 185 (Guadalupe I., Lower California; coll. U. S. 



Nat. Mus.). 

 Salpindes guadalupensis Ridgway, Bull. Nutt. Orn. Club, ii, July, 1877, 60, 61. 

 Salpindes obsoletus guadalupensis Ridgway, Proc. U. S. Nat. Mus., iii, Aug. 24, 



1880, 169, 215, 228; Norn. N. Am. Birds, 1881, no. 58a. 



« Four specimens. <^ Ten specimens. 



^ One specimen. ii Nine specimens. 



