648 



BULLETIlSr 50, UNITED STATES NATIONAL MUSEUM. 



MYIARCHUS LA\A^RENCEII PLATYRHYNCHUS ( Ridgway). 



COZUMEL FLYCATCHER. 



Similar to M. I. querulus, but decidedly smaller, and inner webs 

 of rectriees usually without rufescent or cinnamomeous edging; simi- 

 lar also to M. I. olivascens, but coloration of upper parts darker and 

 decidedly olivaceous, outer webs of remiges and rectriees distinctly 

 edged with dull cinnamon-rufous or russet, yellow of under parts 

 deeper, and bill averaging broader. 



Adult male.— Length (skins), 152-172 (165); wing, 73.5-83.5 (80.4); 

 tail, 70.5-81 (75.9); exposed culmen, 17-19 (17.7); tarsus, 18-20.5 

 (19.6); middle toe, 9.5-11 (10-4)." 



Adult female. — Length (skins), 154-159 (157); wing, 74-77 (75.2); 

 tail, 67.5-69.5 (68.3); exposed culmen, 16-17.5 (16.7); tarsus, 

 17.5-19 (18.2); middle toe, 9-10.5 (9.8). ^ 



Yucatan (Merida; Peto; Chichen-Itza ; La Vega; Cozumel Island), 

 Campeche (Campeche), and eastern Tabasco (Frontera; Montecristo). 



Myiarchus laivrencii (not Muscicapa lawrenceii Giraud) Lawrence, Ann. I.yc.N.Y., 

 ix, 1869, 204 (Merida, Yucatan).— Boucard, Proc. ZoqI. Soc. Lond., 1883, 

 448 (Yucatan).— ScLATER, Cat. Birds Brit. Mus., xiv, 1888, 256, part (Yuca- 

 tan; Cozumel I.). — Salvin, Ibis, 1889, 362, part (Cozumel 1.; crit.). — Salvin 

 and GoDMAN, Biol. Centr.-Am., Aves, ii, 1889, 94, part (Merida, Peto. and 

 Cozumel I., Yucatan). 



\^Myiarchus\ laivrencii Sclater and Salvin, Nom. Av. Neotr., 1873, 52, part. 



Myiarchus platyrhynchus Ridgway, Proc. Biol. Soc. Wash., iii, 1885 (separates pub. 

 Feb. 26), 23 (p. 3 of separate) (Cozumel I., Y^icatan; coll. U. S. Nat. Mus.); 

 Proc. U. S. Nat. Mus., viii, 1885, 570 (Cozumel I.). 



M[yiarchus\ plaiyrJiynchus Ridgway, Man. N. Am. Birds, 1887, 335 (Cozumel). 



[Myiarchus] platyrhynchus Sharpe, Hand-list, iii, 1901, 146. 



Myiarchus laurencei platyrhynchus Nelson, Proc. Biol. Soc. Wash., xvii, Mar. 10, 

 1904, 45 (monogr.). 



a Eleven specimens. 

 b Throe specimens. 



