3O2 BROOKLYN INSTITUTE MUSEUM. SCIENCE BULLETIN 2. 6. 



NYCTIPOLUS NIGRESCENS (Cab.). 



Caprimulgus nigrescens Cabanis in Schomburgk Reisen. Brit. Guiana 



III: (1848): 710 (Brit. Guiana): Hellmayr, Novit. Zool. XVII: 



1910: 381 (Caura, Venezuela). 

 Nyctipolus nigrescens Ridgway, Proc. Biol. Soc. Wash. XXV: 1912: 



p. 198. 



There are three specimens in the American Museum collection from 

 the Caura River; two from La Union and one from Suapure. 



CHORDEILES ACUTIPENNIS ACUTIPENNIS (Boddaert). 



Caprimulgus acutipennis Bodd., Tabl. PI. Enl. 1783. p. 46. 

 Chordeiles acutipennis Berlepsch & Haftert, p. 90. 



Not uncommon. Taken at Altagracia, Quiribana de Caicara and 

 at Maipures. 



A nest of this species was found at Raton Island about midway 

 between Maipures ajid the mouth of the Vichada River. The nest, or 

 better, nesting site, was a mere slight hollow near the centre of one of 

 the enormous flat-topped granite boulders that are so common along the 

 Orinoco. The colors of the sitting bird blended almost perfectly into 

 the colors of the surroundings and I would not have discovered her 

 had I not flushed her by almost putting my foot upon her. The color 

 of the eggs was also decidedly protective. The eggs were taken Feb- 

 ruary ist and were entirely fresh. They are nearly elliptical-oval, in 

 form, being scarcely noticeably smaller a.t one end than at the other. 

 The ground color is a pale vinaceous buff and over the entire surface 

 are thickly scattered small, faint, ill-defined markings of greyish under- 

 lying others of pale raw umber. They measure 24.75 x z 9- 2 5 an d 25 x 

 19.25 mm. 



NANNOCHORDEILES PUSILLUS SEPTENTRIONALIS Hellm. 



Chordeiles pusillus Gould, P. Z. S. 1861. p. 182. 

 Nannochordeiles pusillus Berlepsch & Hartert, p. 90. 

 N[annochordeiles] pusillus septentrionalis Hellm., Novit. Zool. XV: 



1908: p. 78 (Type ex Maipures). 



Observed at Maipures only, where two specimens were collected on 

 my first expedition, one in December, the other in January. 



