Mr D. G. Elliot on the Trocliilids. 169 



salvini respectively. Mr. Gould established his species upon 

 specimens from Guatemala, brought by Mr. Salvin ; and the 

 only character given is its somewhat smaller size : but this 

 will not hold good ; for, with Mr. Gould^s type before me, as 

 well as other specimens brought by Mr. Salvin, I find that 

 examples from Mexico brought by M. Salle are equally 

 small, and in no way to be distinguished from typical osberti. 

 Costa- Rican specimens, separated by Cabanis as salvini, also 

 are undistinguishable from osberti or caniveti; and with an am- 

 ple series before me to judge, I cannot perceive any characters 

 whatever to cause me to believe that there is more than one 

 species. The brilliant crown is common to all, while, at the 

 same time, individuals appear from all the difierent localities 

 with green crowns exhibiting but little brilliancy, which may 

 be accounted for by difference of season in which the birds 

 were killed. The green of the body varies in intensity and 

 tint, as is the case in all the species of this group, and for 

 specific importance goes for nothing. C. caniveti is very 

 closely allied indeed to C. auriceps, Gould, the only per- 

 ceptible difference is that the rectrices of auriceps are longer 

 and narrower ; and although the rectrices of caniveti vary in 

 length and width, I have not found any that are precisely 

 like those of C. auriceps. 



I give a table of measurements taken from seventeen spe- 

 cimens, from Mexico, Guatemala, and Costa Rica, showing 

 how closely they all approximate to each other in size. 



My specimens are : — 



Mexico: 1 {Salle), 1 [Be Oca), Mus. S. & G.; 1 [Salle), 

 Mus. P.L.S. ; 11 [Salle), Mus. D.G.E. Guatemala : Duenas 

 3 [Salvin), Mus. D. G. E. ; Duenas 11 [Salvin), Vera Paz 3 

 [Salvin), Mus. S. & G. Costa Rica : 3 [Arce), Mus. S. & G. j 

 1 [Endres), 1 [ex Gould), 3 [Van Patten), Mus. D. G. E. 



Bill along Amount 



gape. Wing. Tail. of fork. 



1. Mexico [SalU) -60 1-80 1-45 -75 



2. Oaxaca, Mexico (Boucard) . . -65 1-80 1-45 -77 



3. Mexico {Salle) -65 1-80 1-45 79 



4. „ „ -69 1-85 1-23 '65 



5. „ „ -70 1-85 1-40 -70 



