332 Oberholser, On the Genus Contopus. \joct. 



Readily distinguishable from true H. pertinax by its paler 

 coloration. 



Horizopus ochraceus (Sclater & Salvin). 



Contopus ochraceus Sclater & Salvin, Proc. Zool. Soc. 1869, 419. 

 Geog. Dist. — Costa Rica. 



Horizopus lugubris (Lawrence). 



Contopus lugubris Lawrence, Ann. Lye. N. Y. VIII, 1865, 134. 

 Geog. Dist. — Yeragua and Costa Rica. 



Apparently a distinct species, though near H. pertinax. It has 

 the wings relatively rather shorter than its congeners, barring one 

 exception ; but in other respects is quite typical. 



Horizopus brachyrhynchus (Caba?iis). 



Contopus brachyrhynchus Cabanis, Journ. f. Orn. 1SS3, 214. 

 Geog. Dist. — Province of Tucuman, northwestern Argentina. 



The most southern member of the genus. 



Horizopus ardosiacus (Lafresnaye). 



Tyrannula ardosiaca Lafresnaye, Rev. Zool. 1844, 80. 

 Contopus ardesiacus Cabants, Journ. f. Orn. 1855, 479. 

 Geog. Dist. — Bolivia, Peru, Ecuador, Colombia, Yenezuela, and 

 Guiana. 



Agrees with lugubris, in having the wings relatively shorter 

 than in the other species. 1 



Horizopus virens (Liunczus). 



Muscicapa virens Linnaeus, Syst. Nat. ed. 12, I, 1766, 327. 



Muscicapa querula Vieillot, Ois. Am. Sept., I, 1S07, 68, pi. 39 (nee 

 Wilson). 



Muscicapa rapax Wilson, Am. Orn. II, 1S10, 81, pi. xiii, fig. 5. 



Contopus albicollis Lawrence, Ann. N. Y. Acad. Sci. Ill, 1S85, 156. 



Geog. Dist. — Eastern North America, north to southern Canada and 

 Newfoundland, west to the Plains; south in winter through eastern 

 Mexico, Central America and Colombia to Ecuador. 



^Contopus plebeius Cabanis, Mus. Hein. II, 1859, 71, possibly belongs in 

 this vicinity, but it has not been possible satisfactorily to indentify the species. 



