PA C.'I J 7.'//. 1 MI'IIUS. 325 



form deep ash-gray. Adult female : Top of head dull slate-gray 

 (but little darker than back of male), becoming lighter and more 

 brownish on forehead ; back, scapulars, and upper part of rump 

 uniform brownish gray ; collar across hind-neck, lower rump, and 

 upper tail-coverts pale tawny, tinged with gray ; lower parts buffy, 

 nearlj- white on chin, but much deeper (almost tawnj-) on ear- 

 coverts. Length about 6.70, wing .3.40-3.50, tail 2.75-2.80, exposed 

 culmen .52-.55. Hab. Tres Marias Islands, western Mexico. 



P. insularis KiDOW. Grayson's Becard.' 

 fc'. Adult males with breast, belly, flanks, etc., butty whitish or very pale gray- 

 ish, sometimes nearly pure white. 



Adult male: Above similar to P. insularis, but back, etc., decidedly 

 lighter, more ashy, graj-. Adult female: Top of head slate-black 

 posteriorly, gradually passing into ash-gray on forehead; back, 

 scapulars, and rump dull brownish gray or grayish brown, the 

 wings and tail more rusty ; usually a more or less distinct collar of 

 dull ochraccous across hind-neck; lower parts varying from deep 

 ochraceous-buff to bufTy white. Length about 6.50-7.00, wing 3.40- 

 3.6S, tail 2.70-300. exposed culmen .5g-.65. Hah. Western and 

 southern Mexico (Mazatlan to Yucatan) and north to southern 



Arizona 441.1. P. albiventris Lawr. Xantus's Becard." 



«-. Adult males without rose-colored patch on chest or throat; adult females with 

 upper parts, except top of head and tips of quill.s, uniform clear tawny rufous. 

 Adult male: Top of head slate-black, deeper and somewhat glossy poste- 

 riorly, duller and more slaty on forehead ; rest of upper parts uniform 

 slate-gray ; lower parts uniform ash-gray, rarely paler and very slightly 

 tinged with rosy on chest. Adult female : Top of head dark slatj-, in 

 very abrupt and conspicuous contrast with rufous of back ; low^er parts 

 pale buffy, paler (sometimes nearly white) on belly and chin. Length 

 about 6.25, wing 3.50-3.70, tail 2.60-2.85, exposed culmen .62-.65. Hab. 

 Nicaragua and western Costa Rica. 



P. latirostris (Boxap.). Gray-throated Becard.' 



Ge.ms PACHYRHAMPHUS Grav.* (Page 323. pi. XCV., tig. 2.) 



Species. 



a\ Wings and tail parti-colored ; sexes very different in color. Adult male: Top of 

 head glossy blue-black ; hind-neck, lower back, rump, and upper tail-coverts 

 uniform ash-gra}' ; back glossj' black stiperficially. but feathers ash-trray be- 

 neath the surface ; scapulars mostly white ; wings black, with white tips to 



^ New species ; three specimens exaintnod. 



' H,><ir,„inm»' nlliirenlris I,AWR., Ann. Lye. N. Y. viii. 1867. 47.S. (.'iitcen specimens exnmincd.) 



' Piir>,t/rhnmithnii tntirnttrli, r,(i\Ar.. C'unj.t. Rend, xxxviii. 1854, 658. 



* Pnrhyrhamphiu GnAT, List Ocn. B. 1838, 41. Type, Pachi/r?ii/itchHt ciiri'eri Spix, = TiVyra riridit 



VlEIlL. 



