﻿68 



NORTH AMERICAN FAUNA. 



collected which is peculiar to these islauds. The species has been 

 recorded from the mainland (by Van Denburgh, Proc. Phila. Acad., 1897, 

 p. 463, who identifies '^a large number of lizards from Mazatlan, San 

 Bias, and Tepic " with Giinther's species), but I am satisfied that these 

 records are based upon specimens of G. gularis mexicanus (Peters) 

 which superficially very much resemble the island species. The mis- 

 identification is probably due to the fact that Cope, in his monograph 

 of the genus, overlooked the different keeling of the caudal scales 

 w^hich is the essential character of this species. 



List of specimens of Cnemidopliorus mariarum. 



U. S. Na- 

 tional 

 Museum 

 number. 



24652 

 24653 

 24654 

 24655 

 24656 

 24657 

 24658 

 24659 

 24660 

 24661 

 24662 

 24663 

 24664 

 24665 

 24666 



Collect- 

 ors' num- 

 ber. 



637 

 638 

 639 

 640 

 644 

 645 

 646 

 647 

 687 

 701 

 702 

 703 

 704 

 705 



Locality, 



Maria ^Sladre Island - 

 do 



Maria Magdalena Island 



Maria Cleofa Island (outlying rock) . 



do 



do 



do 



do 



Maria Cleofa Island (main island) . . . 



Date. 



May 

 May 

 May 

 May 

 May 

 May 

 May 

 May 

 May 

 May 

 May 

 May 

 May 

 May 

 May 



3, 1897 

 3, 1897 

 4, 1897 

 4, 1897 

 7, 1897 

 7, 1897 

 7, 1897 

 7, 1897 

 28, 1897 

 30, 1897 

 30, 1897 

 30, 1897 

 30, 1897 

 30, 1897 

 31, 1897 



Cnemidophonis gularis mexicanus (Peters). 



The Isabel Island swifts are identical with the mainland form, two 

 specimens of which were brought from San Bias. They are quite dis- 

 tinct from the species on the Tres Marias, which is well characterized 

 by the smaller femorals and the parallel caudals. It is strange that 

 Cope, having had the latter character clearly pointed out by Boulenger, 

 should have referred G. mariarum to G. gularis as a subspecies. 



List of specimens of Cneviidophorus gularis mexicanus. 



TJ. S. Na- 

 tional 

 Museum 

 number. 



Collect- 

 ors' num- 

 ber. 



Locality. 



Date. 



24667 

 24668 

 24669 

 24670 

 24671 



633 



633a 



633& 



633c 



633d 





April 23,1897 

 April 23,1897 

 April 23,1897 

 April 23,1897 

 April 23,1897 









do 



do 



do 





