290 BROOKLYN INSTITUTE MUSEUM. SCIENCE BULLETIN 2. 6. 
in color than females from La Murelia with a greater suffusion of huffy 
on the under parts and more rufous or hazel above, particularly on the 
crown and occiput. 
HvL0PnvL.\x i'UNCTUL.\T.\ ( Dcs Murs). 
Rhopothcra pitiictiilata Des Murs, \'oy. Casteln., Ois. p. 53. 
Hypocnemis punctiilata Hellmayr, Xovit. Zool. XI\'. 1907. p t,j-j ( La 
Pricion, Caura River. \'enez. ). 
There is a pair in the .\merican Museum collection from La Union, 
Caura Riv. 
HVL0PHVL.\X NAEVI.\ CONSOBRINA Todd. 
npra nac7-ia Cm., Syst. Xat. L 1788. p. 1003. 
Hypooicmis nacz'ia Berlcpsch & Hartert. p. 79. 
H[ylophylax] vacvia Ridgway. Birds of N. & AL Amer. \' : p. 128. 
Hylophylax consohrina Todd, Proc. Biol. Soc. Wash. XX\T : 1913: 172 
(Rio Mocho, Rio Caura, Venezuela). 
Xot observed on the Orinoco, but recorded from La Pricion on the 
Caura River by Berlepsch and Hartert. 
Aliller and Iglseder collected a pair of birds at the foot of Mount 
Duida, Upper Orinoco (American Museum collection) that probably 
belongs to this race. I have however only a single example (from 
"Napo") that may be referred to ■naevia nacvia for comparison. The 
differences are not marked, but perhaps sufficient to constitute a good 
race. The abdomen, flanks and under tail-coverts are pale buft'y instead 
of dark ochraceous buff'. Tlie buffy spots on the mantle are also larger. 
MvR.MoBoKus LKucornKvs (Tscluuli). 
Pithys h-ucophrys Tsch. in Weign. .\rch. 1844. p. 18 (Peru, "Fluss 
Tiillitmayo"). 
Myrmoborus Icucoplirys Cab. et Hein. Mus. Hein. II : ( 1S59) : 9. 
Hypocnemis Icucoplirys Berlepsch & Hartert, p. 78. 
Common on the upper river above the falls of Maipures, also 
recorded from points on the Caura River by^ Berlepsch and Hartert. 
Myrmoborus myiotherina myiotherina (Spix). 
Thaninophilns mxiothcvinns Spi.x, :\\. Bras. II. 1825. p. 30, PI. 42. fig. 1. 
Myrmoborus myiothcriiius Cab. et Hein. Mus. Hein. ii (1S59): 9. 
