836 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



PACHYRHAMPHUS MAJOR UROPYGIALIS Nelson. 

 SINALOA BECARD. 



Similar to P. m. major, l)ut gray of lower rump and upper tail- 

 coverts decidedly paler, the latter partly white, and under parts much 

 paler (grayish white shading into very pale gray laterally). 



Adult male. — Length (skin), 154; wing, 84; tail, 65; exposed culmen, 

 14; tarsus, 21; middle toe, 12.5.^ 



Western Mexico, in States of Sinaloa (Plomosas) and Guerrero 

 (Amula). 



Pachyrhamphus major (not Bathmidurus major Cabanis) Salvin and Godman, 

 Biol. Centr.-Am., Aves, ii, 1890, 127, part fAmula, Guerrero). — Nelson, Auk, 

 XV, 1898, 156 (Plomosas, Sinaloa). 



Pachyrhamphus major uropygialis Nelson, Auk, xvi, Jan., 1899, 28 (Plomosas, 

 Sinaloa; coll. U. S. Nat. Mus). 



[Pachyrhamphus] urn py(/iaJis'f>HARVE, Hand-list, iii, 1901, 1G5. 



PACHYRHAMPHUS MAJOR ITZENSIS Nelson. 

 YUCATAN BECARD. 



Similar to P. m. major, but decidedly smaller; back with much less 

 of black, sometimes with none, the whole interscapular area being 

 gray; under parts decidedh^^ paler, white medially, shading into pale 

 gray laterally; adult female slightly paler and duller in color than 

 that of P. m. m^ajor. 



Adult male. —Length (skins), 132-161(143.1); wing, 73.5-79.5(76.3); 

 tail, 54.5-60.5 (57.2); exposed culmen, 14-14.5 (14.2); tarsus, 19.5-20 

 (19.8); middle toe, 11-12 (11.4).'' 



Adult female. — Length (skin), 148; wing, 77; tail, 60; exposed cul- 

 men, 13.5; tarsus, 20; middle toe, 12. '^ 



Yucatan (Chichen-Itza; Calatmul; Peto; Buctzotz). 



Pachyrhamphus major (not Bathmidurus major Cabanis) Boucarp, Proc. Zool. 



Soc. Lend., 1878, 449 (Yucatan; note). — Sclater, Cat. Birds Brit. Mus., xiv, 



1888, 346, part (n. Y'ucatan). — Salvin and Godman, Biol. Centr.-Am., Aves, 



ii, 1890, 127, part (Peto and Buctzotz, Yucatan). 

 Pachyrhamphus major itzensis Nelson, Proc. Biol. Soc. Wash., xiv, Sept. 25, 1901, 



173 (Chichen-ltza, Yucatan; coll. U. S. Nat. Mus.; = adult female). 



PACHYRHAMPHUS ALBO-GRISEUS ALBO-GRISEUS Sclater. 



ARCE'S BECARD. 



Adult male. — Pileum and nape glossy blue-black or dark steel blue, 

 the feathers with a central lanceolate area of opaque (dull) black ; back, 

 scapulars, rump, and upper tail-coverts plain gray (plumbeous-gray or 

 slate-gray on back, slightly paler on rump and upper tail-coverts) ; 

 tail black (the middle rectrices slate-gray becoming black terminally), 



«One specimen (the type). &Six specimens. c One specimen (the type). 



