72 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



1882, 247 (M6rida, Yucatan; crit.; descr. adult female). — Ridgway, Proc. 

 U. S. Nat. Mus., iv, 1881, 102 (monogr.). — Boucard, Proc. Zool. Soc. Lond., 



1883, 452 (M^rida, Yucatan).— Salvin, Ibis, 1889, 369, part (Yucatan; Bonaca 

 I., Honduras?; crit.); 1890, 88 (Bonaca I.). 



C[enturus] rubriventris Gray, Gen. Birds, ii, 1846, 442. — Ridgway, Proc. U. S. 

 Nat. Mus., iv, 1881, 97 (diagnosis). 



Zebrapicus rubriventris Malherbe, Mon. Picid., ii, 1862, 248; iv, 1862, pi. 107, 

 fig. 1. 



M[elanerpes\ rubriventris Ridgway, Man. N. Am. Birds, 1887, 293. 



Melanerpes rubriventris Hargitt, Cat. Birds Brit. Mus., xviii, 1890, 176, part 

 (Merida and Peto, Yucatan). — Salvin and Godman, Biol. Centr.-Am., Aves, 

 ii, 1895, 417, part.— Chapman, Bull. Am. Mus. N. H., viii, 1896, 285 (Chichen- 

 Itza, Yucatan). 



[Melanerpes] rubriventris Sharpe, Hand-list, ii, 1900, 211, part (Yucatan; Bo- 

 naca I.?). 



Melanerpes rubriventris Cole, Bull. Mus. Comp. Zool., 1, 1906, 130 (Chichen-Itza). 



Centurus tricolor (not Picus tricolor Wagler) Cabanis, Joum. fiir Om., 1862, 327, 

 part (in synonymy). 



Picas tricolor (not of Wagler) Sundevall, Consp. Av. Picin., 1866, 54, part. 



CENTURUS RUBRIVENTRIS PYGMiEUS Ridgway. 



LESSER C0ZT7MEL WOODPECKER. 



Similar to C. r. rubriventris but decidedly smaller; color of under 

 parts and sides of head darker; red of pileum usually more restricted, 

 often interrupted by a light sooty grayish band across occiput ; white 

 on basal portion of middle rectrices more extensive, and white bars 

 on back, etc., usually decidedly narrower. 



Adult male.— IjQngi}! (skins), 156-181 (172); wing, 95.5-101 (98); 

 tail, 58-62.5 (60.3); culmen, 20-22 (21); tarsus, 17-20 (18.5); outer 

 anterior toe, 14.5-16 (15.3).« 



Adultfemale.— Length, (skins), 155-178 (171); wing, 95-99.5 (96.7); 

 tail, 57.5-61 (58.8); culmen, 18-20.5 (19.5); tarsus, 17.5-19 (18.3); 

 outer anterior toe, 14-15.5 (14.9).^ 



Cozumel Island, Yucatan. 



Centurus rubriventris (not of Swainson) Salvin, Ibis, 1885, 186, 192 (Cozumel I., 



Yucatan; crit.; habits); 1889, 368, part (Cozumel I.; crit.). 

 Melanerpes rubriventris Hargitt, Cat. Birds Brit. Mus., xviii, 1890, 176, part 



(Cozumel I.). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1895, 417, 



part. 

 [Melanerpes] rubriventris Sharpe, Hand-list, ii, 1900, 211, part (Cozumel I.). 

 Centurus rubriventris pygraxus Ridgway, Proc. U. S. Nat. Mus., viii, sig. 36, 



Oct. 17, 1885, 576 (Cozumel Island, Yucatan; coll. U. S. Nat. Mus.). 

 M[elanerpes] pygmseus Ridgway, Man. N. Am. Birds, 1887, 293. 



« Ten specimens. & Nine spetimens. 



