314 LIRUOKLVX institute: MUSEUM. SCIENCE BULLETIN 2. 6. 
The specimens in the American Museum collection from Boca de 
Sina, Cunucunuma River (Upper Orinoco) differ from examples from 
the middle Orinoco in the almost total absence of the rusty shading of 
tlie under side of the tail-feathers, as in c. cayana, but their much 
darker, more intense bay (with a distinct purplish sheen in certain 
lights) rather than chestnut seems to separate them from that race. It 
is possible these birds are representatives of the race (c. venezuelensis^ 
described by Cory (Orn. Series Field Mus. Pub. i ; May, 1913: p. 284). 
I feel that a series from the Upper Orinoco would show the birds from 
that region to be a distinct race. 
Pi.iiYA CAVAN.\ iNSULANA Hcllmayr. 
Piaya cayana insiilana Hellmayr, Novit. Zonl. XIII. 1906. p. 43 (Type, 
ex Chaguaramas, Trinidad). 
Hitherto this race has been known from Trinidad only, but speci- 
mens collected at Las ISarrancas (delta region) and compared with 
Trinidad examples show them to be identical. 
Birds of this race are closely related to those from the middle 
Orinoco, but are brighter and lighter cinnamon-rufous, or ferruginous 
above (very much paler than Guiana birds) ; and as pointed out by 
their describer. they have the outer webs of the second and third 
rectrix entirely rufous, except for the blackish subapical band. The 
sub-terminal black bars on the rectrices are broader and more sharply 
defined than in Guiana or Orinoco birds, averaging 25 mm. while in 
the birds of the middle Orinoco the average does not exceed 10 mm. 
A pair were observed carrying nesting material August ist. 
PiAVA RUTTLA ORiNocic N SIS Clierric. 
Piaya nitila oriiwccnsis Clierrie. Bui. Am. Mus. Nat. Hist. XXXV, 1916, 
P- 393- 
Piaya rutila Berlepsch & Hartert, p. 97. 
Not common, but noted at Las Barrancas (Delta region), Ciiiilad 
Bolivar, Altagracia and up as far as Maipures. 
Eye Vermillion red; bill sulphur yellow; feet dusky plumbeous olive. 
Tapera naevia (Linnaeus). 
Cuculiis noc-i'ius L.. Syst. Nat. ed. 12. 1776, p. 170. 
Diploptcnis uacvius Berlepsch & Hartert, p. 98. 
Not common. Native name Parita. While nowhere common 
