192 Mr. O. Salvin on a Collection of 



'' Rarer than the other Woodpeckers, but fouud with them 

 in the uncleared woods." 



Apparently common in Yucatan, where all collectors have 

 met with it. 



20. Centurus rubriventris. 



Centurus rubriventris , Sw. An. in Menag. p. 354 ; Lawr. 

 Ann. Lye. N. Y. ix. p. 206. 



" Tolerably common, being found along with C dubius in 

 the uncleared forest.'' 



A male specimen, agreeing with others sent from Northern 

 Yucatan by Mr. Gaumer. I have no doubt as to the dis- 

 tinctness of C. rubriventris as a species^ its characters being 

 very definite, as pointed out by Swainson and Mr. Lawrence. 



21. Centurus dubius. 



Picas dubius, Cabot, Pr. Bost. Soc. N. H. i. p. 164. 



Centurus dubius, Boucard, P. Z. S. 1883, p. 452. 



Centurus aurifrons dubius, Ridgw. Proc. U.S. Nat. Mus. 

 iv. p. 108. 



" Common all over the island." 



Specimens from Cozumel agree with others from Northern 

 Yucatan and British Honduras, the former being typical of 

 C. dubius. Mr. Ridgway, in his recently published mono- 

 graph, treats C dubius as an imperfectly segregated form of 

 C. aurifrons, or, as 1 have frequently called it, C. santa- 

 cruzi. The two forms may pass into one another by insen- 

 sible steps, but I have no evidence before me at present that 

 such is the case. 



22. Chrysotis xantholora. 



Chrysotis scantholora, Gray, Salv. Ibis, 1874, p. 327; Sclater, 

 P. Z. S. 1875, p. 157, pi. xxvi. ; Boucard, P. Z. S. 1883, 

 p. 455. 



" Common everywhere in the uncleared woods. ^' 

 In Northern Yucatan this species is found along with its 

 near ally, C. alhifrons, and Mr. Gaumer obtained examples of 

 both. In Cozumel, too, both may be found, but at present 

 we can only record C. xantholora. 



