140 BULLETIN : MUSEUM OF COMPAEATIVE ZOOLOGY. 



a. (alcoholic), March 13, 1904. 



b. Chichen-Itza, 189-, E. H. Thompson. 

 A few individuals occasionally seen. 



ICTERIDAE. 



106. Icterus mesomelas mesomelas (Wagler). 



Yellow-tailed Oriole. 



One specimen : Chichen-Itza, 189-, E. H. Thompson. 



107- *Icterus auratus Bonaparte. 



Orange Oriole. 



Maya name, yu-yfim. " Swinging bird." 



One specimen : [(J], March 19, 1904. 



108. *Icterus giraudii Cassin. 

 Giraud's Oriole. 

 Two specimens : 



a, b. Chichen-Itza, 189-, E. H. Thompson. 

 Although I found orioles abundant at Chichen, I did not myself secure a 

 specimen of this species. This was probably due to the difficulty of dis- 

 tinguishing the different species in the field, since /. giraudii would appear 

 to be common there. 



109. Icterus cucuUatus igneus Ridgwat. 

 Fiery Oriole. 

 Maya name, yu-yum. 

 One specimen : $, Feb. 16, 1904. 



110. *Icterus gularis yucatanensis Beklepsch. 



Yucatan Oriole. 

 Maya name, yu-yum. 

 Three specimens : 



a. $ March 13, 1904. 



b, c. Chichen-Itza, 189-, E. H. Thompson. 



111. Icterus prosthemelas (Strickland). 



Lesson's Oriole. 



Maya name, hom'-san-W, meaning " of the palms." 



Two specimens : 



a. 9 (juv.), March 13, 1904. 



b. Chichen-Itza, 189- E. H. Thompson. 



This appears to be the first record of this species from Yucatan. 



