50 Zoologica: N. Y. Zoological Society. [I; 2 



British Guiana. The great heart-shaped leaves of that Arum 

 are seen along the lower reaches of every coastal river, yet the 

 Hoatzins are confined to three streams, two of which are little 

 more than creeks, in the extreme eastern portion of the colony. 

 These are the Berbice, the Canje and the Abary Rivers. 



On the Abary, one has to ascend about twenty miles from the 

 coast before Hoatzins are seen, and from here on they are scat- 

 tered at irregular intervals for eight or ten miles, confined ex- 

 clusively to the fringe of bushes on the windward side of the 

 creek. So when we read that the Hoatzin inhabits British 

 Guiana, instead of thinking of it as a bird of strong flight, which 

 traverses savannas and forests, we must realize that it is to be 

 found in only the merest fraction of the colony. 



Taking again the large area drained by the rivers just north 

 of the Orinoco delta, one finds Hoatzins absent except on the 

 Rio Guarapiche, beginning two miles below the village of Caiio 

 Colorado. 



I append a list of the localities from which Hoatzins have 

 been recorded. Their isolated character, while doubtless re- 

 flecting our faulty and inadequate knowledge, hints also of the 

 remarkably sporadic occurrence of these birds : 

 Colombia; Bogata, Sclater (40), 

 Ecuador ; Rio Copataza, C. Buckley. 

 Peru; Cashiboya, Scl. & Sal. (42). 



Yquitos, Berlepsch (7) . 

 Bolivia; Lower Beni River, Allen (1). 

 Venezuela; Caiio del Toro, Hornaday (23). 



Orinoco from the delta to Rio Meta, Cherrie (16) . 

 Aqua Salada, Cherrie (16). 

 Angostura, Berlepsch (7). 

 Caicara, Berlepsch and Hartert (9). 

 Guarapiche River, Beebe (5). 

 Rio Guanare, Bingham (10). 

 British Guiana; Estuary of Berbice, Brown (12). 

 Berbice, Sclater (41), Quelch (38). 

 Abary Creek, Quelch (37), Beebe (6). 

 Dutch Guiana; Maroni River, Perrin (35). 



Indefinite, Penard (34). 

 French Guiana; Approuague, Berlepsch (8). 

 Brazil; The Hoatzin seems to be abundant locally "in the 

 marshy regions which border the Amazon and its tribu- 

 taries," Goeldi (20) . 

 Para, Amazon, Rio Negro, Rio Solimoens, Astlett (2) . 



