Notes on Humming-Birds. 431 



tively rare in all collections. In vicAv of these circumstances 

 Mr, Salvin*s caution with regard to the different forms of 

 the ^o?;^o-group of Cyanolesbia was wise; but soon after the 

 appearance of his work, the great continental TrochUidist , 

 our learned friend Count Bcrlepsch, described (J. f. O. 1892, 

 pp. 453, 454) two distinct forms, viz. : C cmmce, not rare in 

 Bogota collections ; and C. caiidata, from the Andes of 

 Venezuela. A large series of skins from the coast-ranges of 

 mountains behind Puerto Cabello, in Venezuela, enabled him 

 also to recognize the constancy of C. maryaretha. In 1894 

 (Nov. Zool. i. p. 47) I gave a new complete key of the genus 

 Cyanolesbia, including all the above forms as follows : — 

 1. C. griseiventris, 2. C. mocoa, 3. C. mocoa smaragdina, 

 4. C, enimce, 5. C. gorgo, 6. C. gorgo margarethce, 7. C. cce- 

 Jestis, 8. C caudata. 



From this view I see no reason to differ, except that I am 

 inclined to regard forms 4, 5, 6, and 8 as only subspecifically 

 related. Then it should be added that C. emmce and C cau- 

 data have been renamed — " if they should prove distinct 

 species'^ — C, cohimbiana and C. meridana by Boucard in 

 November, 1895 (Gen. Huram. B. pp. 97, 98), who has also 

 very clearly stated their differences. 



Genus Chrysolampis. 



Hete I may mention that a carefully dissected series of 

 Chrysolampis mosguitus, collected by Dr. Percy Rendall 

 in Trinidad and Tobago, shows that my former statement 

 ('Ibis,' 1893, p. 299), that the birds described as females 

 are the young, and those described as young are the adult 

 females, is quite correct. Although I knew I was right, 

 this is worth mentioning, as somebody mig/it have thought 

 I had dissected my birds wrongly. Dr. Rendall's birds 

 also corroborate my assertion that the old females very 

 often have a line of glittering feathers along the throat. 

 In fact, Dr. Kendall tells me that all fully adult females 

 have this character. 



Chrysolampis giglioli, Oust. {' Naturalist e,' 1885, p. 3), is 

 an artefact — a Chrysolampis with the tail of a Fiorisuga, — as 



