﻿66 



NORTH AMERICAN FAUNA. 



satisfactorily separating the various forms which naturally group 

 themselves around Ctenosaura teres. They are therefore left under 

 that general name for the present, the writer hoping some day to be 

 able to review the whole genus. The chief difficulty now lies in the 

 lack of typical specimens of C. teres from Tampico and from the east- 

 ern coast of Mexico generally, and until a series of fall-grown speci- 

 mens of botli sexes is obtained from that region it will be futile to 

 attemi^t to straighten out the nomenclature of these lizards. As far as 

 I can make out from my defective material the Tres Marias and Isabel 

 specimens differ sufficiently from specimens from Oolima and Tehuan- 

 tepec to warrant their subspecific recognition, but whether identical 

 with the Mazatlan form or not I am not able to say. There are certainly 

 several pretty Avell defined races of this species j but more adult speci- 

 mens and a direct comj)arison with the types of many of the old names 

 in various foreign museums will be necessary before the intricate ques- 

 tions involved can be settled. 



[The females were burrowing in the gravel in dry washes and flats 

 on the islands the last half of May. The burrows were from 2 to 3 

 or 4 feet deep, and after the eggs had been deposited at the lower 

 end, the female scrai^ed in loose gravel until the hole was filled, and 

 frequently raised a little mound over the entrance. — E. W. Is.] 



U. S. Na- 

 tional 

 Musonm 

 number. 



24623 

 24624 

 24625 

 24626 

 24627 

 24628 

 24629 

 24630 

 24631 

 24632 

 24633 



Collect- 

 ors' num 

 ber. 



655 

 656 

 659 

 660 

 662 

 (bis) 662 

 676 

 693 

 630 

 631 

 632 



Locality. 



Maria Madre Island . 



do 



do 



....do 



....do 



do 



do. 



Maria Cleofii Island - 



Isabel Island 



....do 



....do 



Date. 



May 

 May 

 May 

 May 

 May 

 May 

 May 

 May 

 Apr. 

 Apr. 

 Apr. 



14, 1897 

 14, 1897 

 15, 1897 

 1-5, 1897 

 15, 1897 

 17, 1897 

 24, 1897 

 29, 1897 

 23, 1897 

 23, 1897 

 23, 1897 



Uta lateralis Boulenger. 



Mr. Nelson remarks that this species lives on stones and driftwood 

 near the border of the woods along the sea beaches. 



Uta lateralis w^as based by Boulenger in 1883 upon specimens from 

 the Tres Marias and from Presidio, near Mazatlan, collected by Forrer, 

 and specimens from both localities are designated as Hypes' in th§ 

 ' Catalogue of Lizards in the British Museum.' - 



