BIRDS OF NORTH AND MIDDLE AMERICA. 241 



MIMUS MAGNIROSTRIS Cory. 

 LARGE-BILLED MOCKINGBIRD. 



Similar in coloration to M. gilvus columbianus , but gray of upper 

 parts darker, wings darker (blackish slate or nearly slate-black), with 

 middle and greater coverts narrowly and abruptly tipped with white, 

 and size very much greater. 



Adult maZe.— Length (skins), 272-294 (283); wing, 118.5-126.5 

 (124.1); tail, 133.5-139.5 (137:5); exposed culmen, 26.5-28 (27.2); 

 tarsus, 36.5-37.5 (37); middle toe, 24-26 (24.7).« 



Adult female. —Length (skins), 275-277 (276); wing 116-126 (121); 

 tail, 125.5-139 (132.2); exposed culmen, 26-27.5 (26.7); tarsus, 34.5-37 

 (35.7); middle toe, 23.5-24.5 (24).^ 



Island of St. Andrews, Caribbean Sea. 



Mivius magnirostris Cory, Descr. Six New Species Birds from Old Providence and 

 St. Andrews, May 27, 1887, 2; Auk, iv, July, 1887, 178, 181 (St. Andrews I., 

 Caribbean Sea; coll. C. B. Cory).— Stone, Proc. Ac. Nat. Sci. Phila., 1899, 

 301, in text (St. Andrews I.). 



[Mimiis] magnirostris Sharpe, Hand-list, iv, 1903, 103. 



MIMUS GUNDLACHII GUNDLACHII Cabanis. 

 GUND LACK'S MOCKINGBIRD. 



Adults (sexes alike). — Above brownish gray (between hair brown 

 and drab-gray), the feathers of pileum and back darker mesially or 

 centrally, producing distinct streaks on the former, broader and less 

 distinct, mostly concealed, wedge-shaped spots on the latter; tail 

 slightly darker brownish gray, with brownish black or blackish browm 

 shafts, the inner webs of rectrices (except middle pair) tipped with 

 white (this gradually diminishing in extent from exterior rectrix), 

 the outer web also, though much more narrowly and less abruptly, 

 white at tip; wings blackish slate or dusky, the lesser coverts broadly 

 margined with brownish gray, the middle and greater coverts tipped 

 with white, or very pale gray, forming two fairly distinct bands 

 -across the wing, the greater coverts and remiges edged with light 

 brownish gray; an indistinct superciliary stripe of pale gray; eyelids 

 white; lores dusky -grayish; auricular region plain brownish gray, 

 the central and lower anterior portion, together with suborbital 

 region, streaked and flecked with whitish; malar region dull white 

 or grayish white indistinctly barred or flecked with dusk}" chin and 

 throat white, margined along each side by a series of dusky streaks 

 forming a more or less distinct submalar line; chest and sides of 

 breast pale brownish gray, the feathers tipped with white (except 

 m worn plumage); sides and flanks very pale grayish buffy, broadly 

 streaked with dusky; breast, abdomen, anal region, and under tail- 

 coverts white, the last more or less tinged with grayish buffy and 



a Four specimens. b Two specimens. 



11422— VOL 4—07 16 



