568 U.S. NATIONAL MUSEUM BULLETIN 221 



Icterus ciicullatus sennetti Ridgway 



Proc. Washington Acad. Sci. 3: 152, Apr. 15, 1901. 

 73654. Adult male. Brownsville, Cameron County, Texas. Apr. 3, 1877. 

 Collected by George B. Sennett. Original number 143. 

 Icterus cucuUatus igneus Ridgway 



Proc. U.S. Nat. Mus. 8:19, May 6, 1885. 

 100111. Adult (apparently male). State of Yucatan, Mexico. Entered 

 into the museum register on Oct. 7, 1884. Collected by George F. 

 Gaumer. 



100276. Adult male. State of Yucatan, Mexico. September 1883. Col- 

 lected by George F. Gaumer. Received from Charles K. Worthen. 



100277. Adult male. Same data as No. 100276. 



100278. Adult male. Same data as No. 100276. 



102210. Adult male. State of Yucatan, Mexico. Entered into the museum 

 register on Jan. 31, 1885. Collected by George F. Gaumer. Received 

 from Charles K. Worthen. 



102211. Adult male. Same data as No. 102210. 



Ridgway, after briefly describing this form, observed: "It may be neces- 

 sary to separate the Yucatan birds . . ., but having only six specimens, and 

 those in somewhat worn plumage, I would not under the circumstances feel 

 justified in making the separation." In the following sentence his resolution 

 had so far weakened as to permit him to give them a name, and thus to 

 fulfil all the requirements of what he felt unjustified in doing, with the 

 important exception of designation of a type specimen ! 



Of the six birds, Richmond has at some time labeled No. 100111 as the 

 type; he has, in short, elevated to highest rank the one specimen of six 

 that lacks indication of sex and date of collection. From my point of view, 

 all are equivalent cotypes. 

 Icterus cucullalus duplexus Nelson 



Proc. Biol. Soc. Washington 14: 173, Sept. 25, 1901. 

 167644. Adult male. Mujeres Island, Caribbean Sea off the eastern 



coast of the State of Yucatan, Mexico. Mar. 24, 1901. Collected by 



Edward W. Nelson and Edward A. Goldman. Original number 7885. 



Received from the U.S. Fish and Wildlife Service. 

 Icterus cucullalus cozumelae Nelson 



Proc. Biol. Soc. Washington 14: 173, Sept. 25, 1901. 

 =Icterus cucullalus cozumelae Nelson. See Hellmayr, Catalogue of birds 



of the Americas 10: 153, 1937. 

 167652. Adult female. Cozumel Island, Caribbean Sea off the eastern 



coast of the State of Yucatan, Mexico. Apr. 11, 1901. Collected by 



Edward W. Nelson and Edward A. Goldman. Original number 8114. 



Received from the U.S. Fish and Wildlife Service. 

 Icterus audubonii Giraud 



Description of sixteen new species of North American birds, [p. 3,] 



1841. 



