168 Mr. D. G. Elliot on the Trochilidffi. 



Buenos Ayres 3 {ex Verreaux), Bolivia? 1 {ex Boucard), 

 Bolivia 1 {ex Cook), Mus. D. G. E. ; these last two are the style 

 called aureiventris. 



ChLOROSTILBON AURICEPS. 



Trochilus auriceps, Gould, in Jard. Contr. Orn, 1852, p. 137. 



Chlorostilbon auriceps, Gould, Mon. Troch. v. pi. 350. 



Chlorolampis auriceps, Gould, Intr. Troch. p. 174, sp. 393. 



Hab. North-west Mexico. 



This pretty species is remarkable for its narrow and greatly 

 lengthened outer rectrices, which extend beyond those next 

 to them '55 inch, and by which alone it can be separated from 

 C. caniveti. In size and general colour of plumage the 

 two species are as nearly alike as can be ; and specimens of 

 caniveti possess as brilliantly coloured crowns as any that can 

 be found in auriceps, thus reducing the distinctive character 

 of its name to nil. The exact locality in which the species 

 dwells is not yet known to us ; for it is still quite rare in col- 

 lections. 



Specimens examined : — 



Mexico 2 {ex Gould), Mus. S. & G. ; Mexico 1 {ex Gould), 

 Mexico 1 {Bourcier), Mus. D. G. E. 



Chloristilbon caniveti. 



Ornismya caniveti, Less. Supp. Ois.-Mouches, pp. 174, 177, 

 pis. 37, 38. 



Chlorostilbon caniveti, Gould, Mon. Troch. v. pi. 351. 



Chlorolampis caniveti, Gould, Intr. Troch. p. 174, sp. 394; 

 Cab. & Heine, Mus. Hein. Th. iii. p. 47, footnote (1860). 



Chlorostilbon osberti, Gould, P. Z. S. I860, p. 309; id. 

 Mon. Troch. v. pi. 352. 



Chlorolampis osberti, Gould, Intr. Troch. p. 174, sp. 395. 



Chlorolampis salvini. Cab. & Heine, Mus. Hein. Th. iii. 

 (1860) p. 48, sp. 105; Gould, Intr. Troch. p. 174, sp. 396. 



Hab. Mexico {Salle), Guatemala {Salvin), Honduras, Costa 

 Rica {Arce, van Patten, i^c.) . 



This species, long since described by Lesson, as above cited, 

 has a wide range ; and the southern forms have been described 

 as distinct by Messrs. Gould and Cabanis as osberti and 



