248 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Xiphorhynchus flavigastermentalis Oberholser, Smithsonian Misc. Coll., xhdii, 

 no. 1579, May 13, 1905, 63. 



[Dendrocolaptes] mentalis Gray, Hand-list, i, 1869, 177, no. 2413. 



Dendrornis flavigaster (not Xiphorhynchus flavigaster Swatason) Elliot, Auk, vii, 

 1890, 178, part (Mazatlan; Manzanillo; monogr.). 



Dendrornis eburneirostris (not Dryocopxis ehurneirostris "Lesson") Salvin and 

 GoDMAN, Biol. Centr.-Am., Aves, ii, 1891, 178, part (Mazatldn; Teplc; San- 

 tiago de Tepfc; Santiago de Colima; Tecolapa). 



[Dendrornis'] ehurneirostris Sclater and Salvin, Nom. Av. Neotr., 1873, 68, 

 part. — Sharpe, Hand-list, iii, 1901, 78, part. 



XIPHORHYNCHUS FLAVIGASTER MEGARHYNCHUS (Nelson). 



LARGE-BILLED WOODHEWER. 



Similar in coloration to X.f. mentalis but larger, especially the bill. 



Adult male. —Lmgih (skins), 239-265 (249); wing, 114-123 (117.4); 

 tail, 89.5-96 (92.3); ciilmen, 42-45.5 (43.2); tarsus, 23-25 (23.8); 

 middle toe, 18.5-19 (18.8).« 



Adult /maZe.— Length (skins), 232-253 (242); wing, 110-111 

 (110.5); tail, 88-90 (89); culmen, 42-42.5 (42.2); tarsus, 22.5-23 

 (22.7); middle toe, 18-18.5 (18.2).^ 



Dendrornis flavigaster megarhynchus Nelson, Auk, xvii, July, 1900, 265 (Puerto 



Angel, Oaxaca; coll. U. S. Nat. Mus.). 

 [Dendrornis] megarhyncha Sharpe, Hand-list, iii, 1901, 78. 

 Xiphorhynchus flavigaster megarhynchus Oberholser, Smithsonian Misc. Coll., 



xhdii, no. 1579, May 13, 1905, 63. 



Southwestern Mexico, in States of Guerrero (El Naranjo; Aca- 

 huitzotla; Sihuataenjo; La Union) and western Oaxaca (Puerto 

 Angel). 



XIPHORHYNCHUS FLAVIGASTER YUCATANENSIS Ridgway. 



YUCATAN WOODHEWER. 



Very similar in coloration to X. f. mentalis, but averaging very 

 slightly smaller (with slightly larger bill and feet), and throat always 

 immaculate jiale buff; much paler and grayer than X. f. flavigaster. 



Adult male.—L&\\gi\\ (skins), 228-248 (238); wing, 104-118 (110.2); 

 tail, 84-100 (90.9); culmen, 40-42 (40.8); tarsus, 22.5-24 (23.2); 

 middle toe, 17-18.5 (17.5). '^ 



Adult jemale.—l.e\\gi\\ (skins), 217-232 (226); wmg, 100-111 

 (106.4); tail, 85-94.5 (89.4); culmen, 39-43 (40.6); tarsus, 21-23 

 (22.1); middle toe, 17.« 



Yucatan (Chichen-Itza; Puerto Morelos; Izalam; La Vega; Tem^x; 

 M6rida; Tuloom; Peto; Buctzotz; Tabi; Meco Island) .<* 



Dendrornis ehurneirostris (not Dryocopus eburneirostris "Lesson") Lawrence, 

 Ann. Lye. N. Y., ix, 1869, 201 (n. Yucatan).— Boucard, Proc. Zool. Soc. 

 Lond., 1883, 450 (Yucatan; habits).— Sclater, Cat. Birds Brit. Mus., xv, 1890, 



o Five specimens. c Nine specimens. 



b Two specimens. <* Specimens from Meco Island not seen by me. 



