GENEBA AND SPECIES. 153 



Genus ETJLAMPIS, Boie. 



This genus is represented by the Trochitu* 

 holosericeus of Linnaeus (T. atrigaster, Shaw), 

 described in the Naturalist's Lib. Ornith. vol. 

 ii. p. 103. This species, according to Lesson, 

 is confined to the Antilles. In Gould's cabi- 

 net. 



G-enus POLYTMUS, Bonap. 



This genus, as it stands in Bonaparte's Con- 

 spectus Avium, contains only one accredited 

 species, the Trochilus Polytmus of Jamaica, a 

 lovely bird, of which we have recorded many 

 interesting details. It is described as the black- 

 capped Humming-bird in the Naturalist's Li- 

 brary, vol. ii. p. 108, pi. 21. In one or two 

 points the description is erroneous ; the beak is 

 not straw-yellow, but crimson, or coral red, in 

 the male, and the mistake has arisen from the 

 description having been taken from preserved 

 skins, in which the natural colour of the beak 

 had faded. Mr. Gould considers this bird as 

 the type of the restricted genus Trochilus : see 

 his Monogr. Trochil. part i. tab. 1. It is the 

 T. Polytmus of Linnaeus, the Ornismya cephal- 

 atra of Lesson 



The following description from living speci- 

 mens will not be unacceptable ; with this preli- 

 minary remark, that it is not the outermost tail 

 feather on each side which is elongated so re- 

 markably, but the next in succession, and that 



