338 Dr. A. von Pelzeln on a new Humming-bird. 
Subsequent careful examination of this bird and compari¬ 
son with the allied species persuaded me that it was really of 
a distinct species, not yet described. 
I take the liberty of dedicating this species to Countess 
Albertina Marschall, daughter of Count August Marschall, 
to whom science owes so many important contributions. 
Natterer's notes on the unique specimen (a male) are 
the following:— 
“ Salto do Girao, October 8, 1829, in high forest on a lofty 
tree, together with other little birds. The bird was some¬ 
what moulting. Iris dark brown. Bill black, not glossy, 
the under maxilla light corneous grey. Feet dark bluish 
ash-grey, nails of the same colour. Length 5|", breadth 8 ; 
the tail surpasses the wings 13"'.” 
For comparison I add Natterer's notes on a specimen of 
C. gyroloides. 
“ Male, adult, moulting, Marabitanas, March 1, 1831, in 
a high forest with other Tanagers. Iris dark brown. Bill 
blackish brown, the under maxilla on the basal half greyish. 
Feet dark bluish grey, washed with violet, nails dark grey. 
Length 5" 10'", breadth 8" 2"'; the tail surpasses the wings 
13'":” 
Besides the male from Marabitanas, Natterer collected three 
other specimens of C. gyroloides on the Bio Xie. 
Heliangelus taczanowskii. 
H. corpore supra viridi, pileo obscuriore, nucha et uropygio 
nitore aurescente, gula juguloque brunneo-nigris, plumis 
stricte albido, versus pectus latius viridi marginatis ; gulae 
macula rufo-violacea metallica vivide splendente, vitta 
pectorali transversali alba, circa 2"' lata; abdomine viri¬ 
di medio ochraceo admixto, tectricibus caudae inferiori- 
bus albis, centro nigro-brunneis; caudae parum rotun- 
datae rectrieibus mediis aureo-viridibus, reliquis brunne- 
scenti-chalybeis, nonnullis macula terminali minutissima 
alba; rostro nigro, pedibus nigrescentibus. Long. 3J", 
alae 2" 4/'', rostri a fronte S'", caudae 19'"; rectrices ex- 
timse 2"' breviores quam mediae. 
Hah. Bogota {Herr Munsberg ). 
Nearly allied to H. clarissce; but the wings are considerably 
