140 BROOKLYX INSTITUTE JIUSIit'M. SCIENCE BULLETIN 2. 6. 
Trinidad birds are so different tliat I have recently separated them as 
P. fuuiigatus aquilonalis} 
Planesticus piiaeopvgus PiiAEOPVGt.TS (Cabanis). 
Tuidiis pliacopxgus Cab. in Schomb. Reise Brit. Guiana II. 1848. p. 666; 
Berlepsch & Hartert p. 3. 
Collected on the Caura River- by Klages (Moimtains west of 
Suapure) and by Andre (La Pricion). It is replaced in the delta 
region of the Orinoco by the Tobagan subspecies. {P. p. phaeopygoides.) 
Planesticus piiaeopvgus phaeopygoides (Seebohm). 
Tardus phaeopygoides Seeliohm, Cat. Birds Brit. Mus. \'. 188 1. p. 404 
(Tobago). 
Tnrdus phacopygits phaeopygoides Hellmayr, Novit. Zool. XIII, 1906. 
p. 4 ( (?Tuanoco, Orinoco Delta). 
Hellmayr in preparing his paper on the birds of Trinidail records 
a specimen from Guanoco in the Orinoco delta, collected by Anilre. 
Hvliicichla aliciae alkiae (Baird). 
Tnrdus alieiae Baird. Rep. Pacific R. R. Surv. IX. 1858. p. 217; Ber- 
lepsch & Hartert p. 3. 
On my first expedition to the Orinoco the Grey-cheeked Thrush 
was observed at irregular intervals from December until ilic middle 
of April. Specimens were collected at Quiribana de Caicara and at 
Maipures above the falls. Only solitary birds were seen. Xune have 
been observed on the more recent expeditions. 
AHMIDAE— THE AIOCKIXG BIRDS. 
This family is represented in the Orinoco region by a single sub- 
species of the genus Mini us and one species of the genus Donacoblus. 
Key to the Genera of Mi.midae. 
a. ■' No naked space on side of neck; tail graduated for less than one-fourth 
its length."" .Uimus. 
a'. 'W large naked space on side of neck; tail j^raduated for nearly half its 
length ■■" Donacobitts. 
AIiMus gilvus melanopterus Lawrence. 
Mimus melanopterus Lawr., Ann. Lye. Nat. Hist. N. Y., 1849. p. 35. 
Mimus gilvus melanopterus Bcrlei)sch & Hartert. p. 3. 
■Sci. Bull. Mus. Bklyn. Inst. I. 1909. p. 387. 
=The Caura is a tributary of the Orinoco entering from the right side, and draunni; a considerable 
portion of the mountainous region between British Guiana and Venezuela. 
■'Ridg\vay Birds of North and Middle -America. IV. 1907. p. 183. 
