346 CALIFORNIA ACADEMY OF SCIENCES. 



labialis Stejneger, from Cerros Island, Lower California. 

 To facilitate comparison I have used the wording of the 

 original description of that species so far as the differ- 

 ences in my specimen will permit. The distinguishing 

 characters of the two forms may be tabulated as follows : 



C. labialis. C. arizonce. 



Two large preauals. Three large preanala. 



Frontal very narrow behind. Frontal not unusually narrow be- 

 hind. 



Gular and collar scales smaller. Gular and collar scales larger. 



Postantebrachials not enlarged. Postantebrachials slightly enlarged. 



Limbs longitudinally striped. Limbs unicolor. 



Tail with distinct color bands. Tail without distinct color bands. 



A wider indefinite median dorsal A nan'ow well-defined median dorsal 

 band. line. 



I am greatly indebted to Dr. Leonhard Stejneger of the 

 U. S. National Museum for the privilege of examining 

 one of the original specimens of C . labialis. 



Eumeces obsoletus Baird & Girard. 



One specimen of this skink was found at Fort Grant, 

 Graham County, by Mr. H. Boutelle. 



Tantilla coronata Baird & Girard. 



I refer to this species a snake (No. 1706) which Mr. 

 Price secured in the Huachuca Mountains, August 20, 

 1893. It has 148 gastrosteges and 46 urosteges (tip of 

 tail missing) , but agrees perfectly in color with the de- 

 scriptions of T. coronata. Unless I am mistaken, this is 

 the first Arizonan specimen of this snake, and furnishes 

 the most western record of its range. 



Rhinocheilus lecontei Baird & Girard. 



This snake is represented in the collection by a single 

 specimen labeled merely Arizona. It has two preocular 

 plates on each side of the head. Some of the posterior 

 urosteges are divided. 



