Mr. 0. Salvin on the Ornithology of Guatemala. 197 



Arce at Chiapam in September 1862, which agrees fairly well with 

 Mr. Gassings description of j3i. jiivosus, as quoted above. It has, 

 however, a narrow black pectoral band, which he conjectures is 

 present in the adult of his species, and is, as far as I can judge 

 from the skin, somewhat smaller in its measurements, except 

 the wings, which are slightly, and the tail, which is much longer. 

 I feel doubtful if it really does belong to this species, as our spe- 

 cimen dififers very little from the South American ^. collaris, 

 Vieill. {jE. azarcB, auct.), and certainly does not confirm Mr. 

 Gassings remark respecting the distinction of the JE. nivosus from 

 ^. collaris : — " It is quite distinct from that [i. e. JE. azarcB] or 

 any other that has come under my notice/' Our specimen differs 

 from the South American bird in the absence of the rufous on 

 the sides of the neck and above and below the ends of the pec- 

 toral band ; for this reason I place it under the name of jE. 

 nivosus. Its measurements are precisely those of ^. collaris, of 

 which I possess two specimens — one from Mendoza, through 

 Prof. Burmeister, and the other from Marambaya in Brazil, col- 

 lected by Natterer. Long. tot. 6, alse 3' 85, caudse 2, tarsi 1-05, 

 rostri a rictu "75 poll. Britt. 



54. ^GiALiTES SEMIPALMATUS (Bp.) : Baird, Birds N. A. 

 p. 694; Salv. Ibis, 1865, p. 191. 



Sandy flats of Ghiapam. 



55. tEgialites wilsonianus (Ord) : Baird, Birds N. A. 

 p. 693; Salv. Ibis, 1864, p. 387, et 1865, p. 191. 



Found in flocks with the last-mentioned species. Very 

 common. It occurs also and remains to breed on the Gays of the 

 Belize coast. 



56. NuMENius HUDSONicus, Lath.: Baird, Birds of N. A. 

 p. 744 ; Salv. Ibis, 1865, p. 190. 



Very abundant about the lagoons of Ghiapam. 



57. NuMENius LONGiROSTRis, Wils. : Baird, Birds of N. A. 

 p. 743. 



Not nearly so common as the last species, but found in the 

 same localities. We also have a specimen which was shot near 

 Duenas. 



