Type >S//edmewA' o/'Trocliilidis. 9 



many names by different authors. The specimens with white 

 spots in the tail, which may possibly be females, were named 

 by Mr. Gould L. hypoleucus ; but this has been placed as a 

 synonym of Tschudi's appellation by that naturalist. Re- 

 cently Mr. Buckley has brought specimens from Bolivia, 

 which, on comparison with Tschudi^s type, are found to be 

 the same. This genus, therefore, will consist only of two 

 species*, the present and the L. chlorocercus, Gould, de- 

 scribed in the ' Proceedings ' of the Zoological Society for 

 1866, p. 194, which differs chiefly in having the throat spot- 

 ted with brown, instead of being pure white. Tschudi's bird 

 was first described as T. leucogaster {loc. cit.), a name after- 

 wards altered to T. chionogaster in the '^ Fauna Peruana;' 

 the name first applied must, of course, be the one adopted. 



In the year 1865, in the ' Annals ' of the Florence Mu- 

 seum, Sig. Benvenuti described four species of Humming- 

 birds, coming from New Granada, as new. The descriptions 

 given, and the comparisons made, did not indicate them as 

 belonging to unknown forms; but it was impossible to deter- 

 mine their real specific value without having access to the 

 examples themselves. Having requested Dr. Giglioli to for- 

 ward the types to me, he most kindly sent three of them (all 

 that were in the museum) ; and I am now able to determine 



* In the P. Z. S. for 1874, M. Taczanowski described a specimen of 

 Leucippiis as L, liallidus, from Peru, dift'ering from L. leucogaster in being 

 slightly lai-ger, and having a "nuance grisatre " on the back and head. 

 This is undoubtedly " Trochiliis turneri,'^ Bom-cier (Revue Zoologique 

 1846, p. 313), the type of which is in my collection, and which is cha- 

 racterized in his description as having " la tete, cou, dos, couvertures 

 alaires at caudales vert grisatre luisant." This has long since been placed 

 among the synonyms of Z. leucogaster, as being simply a phase of plu- 

 mage that is met with in nearly every group of the TrochUidae, where 

 specimens are found that exhibit a colour slightly at variance with 

 the typical style, as, for instance, yellowish green, or, as in this case, 

 greyish gTeen, instead of pure green. These differences, however, like 

 those of slight variations in length of bill, wings, or tail, have no specific 

 value. I have therefore placed L. jmlliclus among the synonyms of 

 L. leucogaster ; for it does not seem to be at all necessary to elevate L. 

 turneri into a separate species, of which L. pallidm of Taczanowski 

 would certainly be a svuonvm. 



