252 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



DRYOBATES SCALARIS AGNUS Oberholser. 

 CAUOA WOODPECKER. 



Similar to D. s. sinaloensis, but decidedly larger. 



Adult maZe.— Length (skins), 165-170 (167.5); wing, 100-101.5 

 (100.8) ; tail, 58-59.5 (58.8) ; exposed culmen, 20-23 (21.5) ; tarsus, 

 17; outer anterior toe, 13." 



Adult female.— Length (skins), 160-161.5 (161); wing, 95-98.5 

 (96.8) ; tail, 56.5-60.5 (58.5) ; exposed culmen, 19.5-20 (19.8) ; tarsus, 

 16-16.5 (16.3); outer anterior toe, 12.* 



Southern Sonora (Camoa; Batamotdl). 



Dryobates scalaris agnus Obekholsee, Proc. U. S. Nat. Mus., xli, June 30, 1911, 

 140, 150 (Camoa, Rio Mayo, Sinaloa, w. Mexico; coll. TJ. S. Nat. Mus.). 



DRYOBATES SCALARIS LUCASANUS (Xantus). 

 SAN LUCAS WOODPECKER. 



Similar to D. s. agnus, but decidedly larger (especially bill and feet), 

 black bars on back, etc., broader (usually much broader) than white 

 ones, white bars on wings usually decidedly narrower, and black 

 markings on lateral under parts usually shorter and broader (spots 

 rather than streaks) . 



Adult male.— Length, (skins), 174-191 (184); wing, 100-105 (102); 

 tail, 60.5-66 (63); exposed culmen, 23.5-25 (24.5); tarsus, 18.5-19.5 

 (19.1); outer anterior toe, 13-14.5 (14). * 



Adultfemale.— Length, (skins), 168-182 (175); wing, 95-102 (99.2); 

 tail, 57-69 (63.8); exposed culmen, 19-22 (20.5); tarsus, 17-18 

 (17.7); outer anterior toe, 12.5-13 (12.8).* 



Cape San Lucas district of Lower California (Cape San Lucas; San 

 Jos6 del Cabo; La Laguna; La Paz; Sanlgndcio; Rosarito; Santo 

 Domingo; Miraflores; Todos Santos; Pescadero, 10 miles south of 

 Todos Santos; Santa Anita; El Cajoncito; San Francisco Moun- 

 tains; Victoria Mountains; Santa Margarita Island) . 



Picas lumsanus Xantus, Proc. Ac. Nat. Sci. Phila., Nov., 1859, 298 (Cape San 

 Lucas, Lower California; coll. U. S. Nat. Mus.). — BArao, Proc. Ac. Nat. Sci. 

 Phila., 1859, 302 (Cape San Lucas; crit.). — ^Malherbe, Mon. Picid., i, 1861, 

 166.— ScLATBB, Cat. Am. Birds, 1862, 333.— Cassin, Proc. Ac. Nat. Sci. 

 Phila., 1863, 195.— Gray, List Birds Brit. Mus., Capit. and Picid., 1868, 50.— 

 Elliot, Illustr. New and Unfig. Birds N. Am., i, 1869, 7. 



P[icus] lucasanus Sundevall, Consp. Av. Picin., 1866, 20. 



[Picas] lucasanus Gray, Hand-list, ii, 1870, 186, no. 8612. 



D[ictyopipo] lucasana Gabanis and Heine, Mus. Hein., iv, heft 2, 1863, 75. 



Picas scalaris var. IvMisanus Baerd, in Coopee, Om. CaKf., 1870, 381 (crit.). — 

 Baied, Beeweb, and Ridqway, Hist. N. Am. Birds, ii, 1874, 519. 



[Picas scalaris] var. lucasanus Baird, Brewer, and Ridgwat, Hist. N. Am. Birds, 

 ii, 1874, 501, 517. 



Picas scalaris . . . var. lucasamis CouBS, Check List, 1873, no. 2976. 



" Two specimens. b Ten specimens. 



