164 BROOKLYN INSTITUTE MUSEUM. SCIENCE BULLETIN 2. 6. 



e' . Adult males, interscapulum blue, chin and throat black; 

 females and immature specimens with white, or yellowish 

 white, under wing-coverts and inner edges to wing quills. 

 /. Black of throat not extending on to the chest. 



g. Larger; wing, 56 to 59 cm.; tail, 28 to 31 cm., and blue 



of back and head deeper and richer Cyanerpes caerulea caerulea . 



g'. Smaller; wing. 53 to 55 cm.; tail, 26 to 26.5 cm.; general 

 color a paler blue, the anterior part of crown and cheeks 



a pale azure blue Cyanerpes caerulea cherriei. 1 



/'. Black of throat extending on to the chest Cyanerpes nitida. 



c'. Bill not longer than tarsus Dacnis. 



d. Males, more or less black about the head (chin, throat lores, 

 etc.) ; or, nearly uniform dark purplish blue, or bluish grey above. 

 e. Chin and throat black or blackish. 



/. General color blue Dacnis cayana cayana. 



/'. General color yellow Dacnis flavivenlris. 



e'. Chin and throat not black or blackish. 



/. Bright blue below, centre of belly white Dacnis angelica. • 



f. Not bright blue below. 



g. Above dark purplish blue Aleleodacnis analis. ^ 



g'. Above blueish grey Aleleodacnis bicolor. 



b'. Superciliaries white, or yellowish white. 



c. A white spot at base of primaries Coereba luteola. 



d. Averaging smaller (wing average 54 mm.) yellow of breast, ab- 

 domen and upper tail coverts paler Coereba luteola luleola. 



d'. Averaging larger (wing 57 mm.) yellow color darker and richer . .. Coereba luleola hellmayri. 

 c'. No white spot at base of primaries Coereba guianensis. 



Chlorophanes spiza spiza (Linnaeus). 

 Motacilla spiza L., Syst. Nat. ed. lo. I. 1758. p. 188. excl. var. /?. 

 Chlorophanes spiza Berlepsch & Hartert, p. 15. 

 Chlorophanes spiza spiza Hellmayr, Novit. Zool. XIII. 1906. p. 10. 



While I have not observed this species either on the middle or on 

 the Upper Orinoco, it has been recorded from Guanoco in the Orinoco 

 Delta by Hellmayr, and Klages sent specimens from Suapure and Nicare 

 on the Caura River to the Tring Museum, as recorded by Berlepsch and 

 Hartert. 



Cyanerpes cyanea cyanea (Linnaeus). 



Certhia cyanea L., Syst. Nat. ed. 12. I. 1766. p. 188. 



Cyanerpes cyanea cyanea Hellmayr, Novit. Zool. XIII. 1906. p. 10. 



This species has been recorded from the Orinoco Delta ( Guanoco) 

 by Hellmayr, and Beebe secured specimens at the same locality in 

 April, 1908. 



Cyanerpes caerulea caerulea (Linnaeus). 

 Certhia caerulea L., Syst. Nat. ed. 10. I. 1758, p. 118. (Surinam). 

 Cyanerpes caerulea caerulea Hellmayr, Novit. Zool. XIII. 1906. p. 8. 

 Recorded from Guanoco (Orinoco Delta) by Hellmayr. 



iC. caerulea Irinitatis Bonaparte (Hellm. Novit. Zool. XIII. 1906. p. 8) is believed to be confined 

 to the island of Trinidad. It may, however, occur on the mainland of Venezuela. From C. c. caerulea and 

 c. cherriei it is distinguished by its larger and (at the base) broader bill; and by the dark blue of the crown 

 being uniform from the forehead to the nape. 



^Recorded from British Guiana. 



^Recorded from Cayenne. 



