CHERRIE: ORNITHOLOGY OF THE ORINOCO REGION. 2»I 
Dysitiia-mnus akfinis ANDREI Hellmavr. 
Dysitluniunis afiiiiis aiidrci Hellmayr, Novit. Zool. XIII. 1906. 31 (Type, 
9 ad ex Caparo, Trinidad). 
Mr. C. \\'illiam Beebe obtained a specimen at Guanoco in the 
Orinoco delta, which compared with examples from Trinidad, showed 
itself to be the island form. 
TiiAMNOMANEs GLAUcus Cabanis. 
Thamnomancs ylanciis Cab.. Wiegn-Arch. 1847. p. 230. PL 3 ; Berlepsch 
& Hartert, p. 71 (Mimduapo, Nericagua, Bichaco, Orinoco River; 
Suapure, La Pricion, Nicare and La Union, Caura River, Venez.). 
T[hamnomanes] c[aesius] glaucus Hellmayr, Novit. Zool. XIII. 1906. 
p. 368 (Orinoco region; Mimduapo, Caura River). 
T[hamnomanes] caesius glaucus Hellmayr, Novit. Zool. XIV. 1907. p. 
65. (Munduapo and Bichaco, Orinoco River, Venez.). 
Common on the upper Orinoco but not observed below the falls 
of -\Iaipures. 
In the American Museum is a series collected by Klages at La 
Union and Suapure on the Caura River. 
I prefer to consider this as a distinct species and not as a race of T. 
caesius (Licht.) the large concealed white dorsal patch at once distin- 
guishing it from caesius caesius and the two races hoffmannsi and per- 
similis of that species. Also I believe T. caesius schistogynus Hellmayr 
should be accorded specific rank, the much greater development of the 
rictal bristles (not mentioned by its describer) and the very differently 
colored female distinguishing it at qnce from other Tliamuomancs. 
Myrmop.\gis schistocolor INTERIOR Chapman. 
Mynnopagis schistocolor interior Chapman Bull. A. M. N. H. XXXIII: 
1914: p. 614 (Type ex Buena Vista, above Villavicencio, Eastern 
Andes, Colombia) Suapure and Mato Riv. : Foot Mt. Duida, Ori- 
noco Riv. 
Mr. Chapman in discussing the races of schistocolor states that the 
specimens from the Upper Orinoco and from Caura river points are 
intergrades between jr. sanctac-martac and .9. interior. The upper Ori- 
noco birds probably represent an undescribed form. 
