66 



NORTH AMERICAN FAUNA. 



satisfactorily separutiug tbe various forms whicli uaturally group 

 themselves around Ctcnosaitra feres. They are therefore left under 

 that general name for the present, the wi-iter hojiing .some day to be 

 able to review the whole genus. The chief difdculty 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 full-grown speci- 

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

 attempt 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 difl'er sufticiently from specimens from Colima and Tehuan- 

 tepec to warrant their subspecitic recognition, but whether identical 

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

 several pretty well detiiied races of this species; but more adult speci- 

 mens and a direct comparison 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 de|)osited at the lower 

 end, the female .scraped in loose gravel until the hole was tilled, and 

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



Uta lateralis Bnnlonger. 



Mr. ;?selsoii remarks that this .species lives on stones and driftwood 

 near the border of the woods along the sea beaches. 



Uta lateralis was based by Boulenger in 1883 upon .specimens from 

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

 and specimens from both localities are designated as 'types' in the 

 * Catalogue of Lizards in the Pritish Museum.' 



