COLE : AVES FROM YUCATAN. 109 



from Izamal, Yucatan, and probably represents a species characteristic of this 

 arid portion of the peninsula. The following measurements in millimeters 

 were taken from this specimen, and for comparison, those of the type are added 

 in parentheses, as given in the original description (Rehn, Proc. Acad. Nat. 

 Sci., Phila., 1904, p. 445) : ear, 17 (17.2) ; greatest width of ear, 12.5 (13) ; 

 tragus, 5 (7) ; forearm, 35.3 (35.5) ; thumb, 9.6 (10) ; third digit, 62.4 (65.5) ; 

 tibia, 14.1 (14.9); calcaneum, 9.1 (9); foot, 8 (10.5) ; nose-leaf and pad, 8.3 

 (7.2); greatest zygomatic width of skull, 9.1 (9.2); extreme length of skull, 

 19 (-). 



20. Artibeus yucatanicus Allen. 



A male, taken at Chichen-Itza, the type locality, March 14, 1904, represents 

 this recently recognized species. 



3. AVES. By Leon J. Cole. 



Mr. Frank M. Chapman, in his Notes on Birds observed in Yuca- 

 tan, 1 published an excellent list of the birds observed by him at 

 Chichen-Itza, Yucatan, during the month of March (3-21) of the same 

 year. Although much collecting had been done in a general way in the 

 peninsula for many years, so that the bird fauna was comparatively well 

 known, this was the first strictly local list for any part of the country. 

 Until recent years, when the railroads have been much extended, 

 Chichen-Itza was rather inaccessible and difficult to reach ; and as a 

 consequence, with a few exceptions, most of the naturalists and collect- 

 ors who have visited Yucatan have confined their operations to within a 

 comparatively short radius of Merida. As early as 1841 and 1842 Dr. 

 Samuel Cabot, Jr., in company with the explorer Stephens, journeyed 

 over much of the northern part of Yucatan, including in his travels a 

 visit to Chichen-Itza, and even to the island of Cozumel off the eastern 

 coast. Stephens published a brief " Memorandum " of Cabot's results in 

 the second volume of his Incidents of Travel in Yucatan (Harper 

 Brothers, 1843), but with a few exceptions definite localities are not 

 given. The most extensive collecting in the peninsula was done from 

 twenty to thirty years ago by Dr. Geo. F. Gaumer, who is still living at 

 Izamal. Many of his notes were published by Boucard in the Proceed- 

 ings of the Zoological Society of London, 1883; and in many cases 

 exact localities are mentioned, so that the records have value from a 

 distributional standpoint. His collections, however, went to various 

 persons, though many of them finally came into the hands of Salvin and 



1 Bull. Amer. Mus. Nat. Hist., 1896, 8. p. 271-290. This article includes a good 

 bibliography of the principal papers relating to birds published before 1896. 



