192 Proceedings of the Biological Society of Washington. 



Myiarchus tyrannulus bahice von Ihering, Aves do Brazil, 1907, 294 

 (Bahia, Brazil).— von Berlepsch, Ornis, XIV, 1907, 476 (in list of 

 species). — Hellmayb, Nov. Zool., XV, 1908, 53 (Goyaz and Rio Ara- 

 guaya, Brazil; meas.; crit.). — Hellmayr, Abhand. K. Bayerischen Akad. 

 Wiss., Math.-phys. KL, XXVI, 1912, 90 (Rio Murid, Brazil, ex Natterer; 

 crit.). — VON Ihering, Rev. Mus. Paulista, IX, 1914, 442 (Joazeiro, 

 Brazil; descr. eggs). 



Subspedfic characters. — Similar to Myiarchus tyrannulus tyrannulus, but 

 cinnamon rufous area on tail not sharply defined from the dusky, and 

 almost or quite wanting on the two outermost feathers on each side. 



Measurements. — Male: wing, 92-99 (average, 95); tail, 83-91 (86); bill, 

 19.5-21.5 (20.5); tarsus, 21.5-24 (23). Female (five specimens): wing, 

 92-97 (93); tail, 84-87 (85); bill, 18.5-20.5 (20); tarsus, 20.5-23 (21). 



Range. — Brazil, from the lower Amazon Valley to Sao Paulo (except the 

 Ceara region). 



Remarks. — It would seem as if von Berlepsch and Leverkiihn did not 

 place much faith in their new form, since they failed to describe it formally. 

 It is a perfectly good race, however, quite distinct from the typical form, 

 having a differently colored tail. As a rule the outer pair of rectrices, and 

 often also the next pair, are without rufous, but sometimes there is a narrow 

 edging of this color on the inner web of the feathers. Birds of this type are 

 occasional anywhere in the range of tyrannulus, but in central and eastern 

 Brazil they are found to the exclusion of the other (so far as known). 

 With an unusually fine series at our command we can discover no other 

 characters for the separation of bahice, which should undoubtedly stand as 

 a subspecies of tyrannulus. 



Specimens examined. — Brazil: Santarem, 20; Itaituba, 1; Apacy, 1; 

 Obidos, 8; Serra de Eur6, 2; Serra de Paituna, 1; Monte Alegre, 2; Cametd, 

 Rio Tocantins, 1; Bahia, 1; Itarare, Sao Paulo, 1; Victoria, Sao Paulo, 2; 

 Bebedouro, Sao Paulo, 1; Itapura, Sao Paulo, 1. Total, 42. 



Myiarchus tyrannulus pallescens Cory. 



Myiarchus tyrannulus pallescens Cory, Field Mus. Orn. Series, I, 1916, 

 343 (Jua, Ceard, Brazil; orig. descr.; type in coll. Field Mus.). 



Subspedfic characters. — Similar to Myiarchus tyrannulus tyrannulus, 

 but coloration in general paler, and upper parts more greenish. 



Measurements. — Male (two specimens): wing, 94-95; tail, 86-87; bUl, 

 19-20; tarsus, 21-22. 



Range. — Known only from the type-locality, in extreme northeastern 

 Brazil. 



Remarks. — In view of the extent of the area over which bahioe ranges 

 without varying it is surprising to find a different form inhabiting a com- 

 paratively restricted area in extreme northeastern Brazil. Although only 

 two specimens have been examined in this connection, they apparently 

 represent a valid race. The throat and breast are a shade paler gray (pallid 

 neutral gray) than in bahioe, and the upper parts are obviously paler and 

 more greenish (near citrine drab), with the pileum decidedly brownish. 



