292 DKOOKl.VN INSTITUTE MUSEUM. SCIENCE BULLETIN 2. 6. 
Rampiiucaenus melanurus trinitatis Lesson. 
luiiiipliocacinis trinitatis Lesson, Re\-. Z00I. 1839. p. 42. 
Raiupliocuc^iiiis iiichiiiiinis Berlepsch & Hartert, p. 79. 
Rare on the Orinoco ; two collected at Munduapo in February 
and one at Nericagua in April. Berlepsch and Hartert record it from 
the Caura Ri\er, and in the American Museum collection are speci- 
mens taken b}- S. M. Klages at Suapure and at Maripa on that river. 
FoRMiCARius COLMA coLMA Boddacrt. 
Fonuu-anus coliiui Bodd., Tabl. I'l. Enl. 1783. p. 44. 
F onniciirius niyrifrons Berlepsch & Hartert, p. 80. 
Rare, two taken at Nericagua during March and April. A nest 
of this species, from which the parent was flushed, was found at 
Nericagua in ilarch, 1899. It was a natural cavity in a tree trunk, 
about 5 metres from the ground, 'i'he cavity was about 40 cm. in 
depth and about 15 cm. in diameter. The bottom was lined with 
rootlets and dry grasses. The two eggs were pure white. 
Recorded also from points on the Caura River by Berlepsch and 
Hartert. 
In the American Museum collection are four specimens, one from 
El Llagual, and three from La Union, Caura River. These skins, 
three of which are labelled as females, indicate that the adult female 
is exacth' similar to the adult males, i. e., without any white on chin 
or throat! . One of the examples before me has the extreme upper 
throat and chin white and the throat flecked with white ; another has 
a small chin spot only white, while the third is without any white. 
An examination of Mr. Ridgway's type of F. nigrifrons glaucopcc- 
tus^ from British Guiana with the other examples of the same from the 
American Museum collection, compared with the Caura River speci- 
mens, indicates that glaucopect-us is a well marked subspecies dis- 
tinguished by the great extension of sooty blackish down over the chest 
and even onto the sides. 
b'ok.MJCARUS Rl-FICKI'^ (Spix). 
Myiotluva nificcps Spix, Av. Bras. i. p. 72, pi. 72 fig. i, o8-4)- 
A single specimen in the American Museum collection, taken b>- 
Klages at La LTnion, Caura Ri\cr. V'enez., evidently belongs to this 
'Hellmayr. Novit. Zool. Xll. igos. 2t)2. bdicvcd the throat of adult female to be white "sharply 
defined against the sooty grey breast. " 
jproc. U. S. N. M. XVI. i8c).s. p. 67.!. 
