(392 ) 
The range of the three forms is as follows :— 
(a) Bucco tamatia tamatia Gm. 
Type locality: Cayenne. 
Hab. French Guiana: Cayenne (Cherrie, etc.), Saint-Jean-du-Maroni (Le 
Moult; Mus. Monac.). Surinam: Paramaribo, Kwata (Penard; Tring Mus.). 
British Guiana: Camacnsa, Rio Rupunnni, Aunai, etc. (Whitely). Venezuela: 
Maipures, Orinoco R. (Cherrie). North Brazil: Marabitanas, Rio Vaupé, upper 
Rio Negro ; Manios; Forte do Sao Joaquim, Rio Branco (Natterer); right bank of 
the Rio Madeira: Borba, south to Engenho do Gama and S. Vicente, on the 
Guaporé (Natterer). 
Examined: 3 French Guiana, 7 Surinam, 4 British Guiana, 2 Maipures, 
1 Marabitanas, 1 Rio Vaupé, 1 Manos, 1 Rio Branco, 2 Borba, 1 Engenho do 
Gama, 2 8. Vicente. 
(6) Bucco tamatia pulmentum Scl. 
Type locality: Upper Amazons. 
Hab. Eastern Ecuador; Sarayacu (Buckley), Eastern Peru: Pebas (Castelnau 
& Deville), Chamicuros (Bartlett), etc. W. Brazil: Humaytha, left bank of Rio 
Madeira (Hoffmanns). 
Examined: 3 Bastern Ecuador, 3 Eastern Pern, 1 (type) “ Upper Amazons,” 
1 Humaytha. 
*(c) Bucco tamatia hypnaleus (Cab. & Heine). 
Chaunornis hypnalea Cabanis & Heine, Mus. Heinean. iv. 1. p, 145. footnote (1863.--Pard). 
Type locality: Para. 
Hab. N.E. Brazil: Pari (Natterer), Rio Capim (Wallace), Boavista, Marajé 
(Steere), 
Examined: 1 & ad., Pari (Natterer); 1 2 ad., Boavista (Tring). ] 
[33]. Bucco chacuru Vieill. 
Cf. Hellmayr, Nov. Zool. xiv, p. 400 (Humaytba). 
Left bank : campos of Humaytha (Hoffmanns), 
No additional material has come to hand. The Humaytha birds agree in 
size with South Brazilian and Paraguay specimens, but are perhaps different in 
coloration (cf. Z.c.). Skins from Eastern Bolivia (Santa Cruz) and Sonth-Hastern 
Peru (Santa Ana) are much larger. ] 
332. Bucco macrodactylus (Spix). 
Cyphos macrodactylus Spix, Av. Bras, i. p. 51. pl. xxxix. fig. 2 (1824.—“in sylvis flum. Ama- 
zonum”’), 
Bucco macrodactylus Pelzeln, ic. p. 22 (S. Jo&io do Crato) ; Hellmayr, Nov. Zool. xiv. p. 400 
(Humaytha). 
Nos. 835, 877. 2% ad., Marmellos, 20, 27. xii. 1907.—Wing 66; tail 54, 56; 
bill 23 mm. : 
No. 393. ad., Calama, 15. viii. 1907.—Wing 67; tail 64; bill 23 mm. 
“Tris red or brownish red, feet grey, bill black.” 
Specimens from the Madeira agree well with those from East Ecuador and 
Bogoté collections. B. macrodactylus is widely distributed in Upper Amazonia. 
